diff --git a/docs/plans/2026-04-07-client-side-message-state-design.md b/docs/plans/2026-04-07-client-side-message-state-design.md new file mode 100644 index 00000000..6f627789 --- /dev/null +++ b/docs/plans/2026-04-07-client-side-message-state-design.md @@ -0,0 +1,69 @@ +# Client-Side Message State + +## Problem + +The Python server maintains a shadow copy of all UI messages (`self._messages()` as a `reactive.Value[tuple[StoredMessage, ...]]`). This creates a second source of truth alongside the React component's own message state, leading to sync issues — most notably HTMLDependency objects being lost during streaming accumulation and bookmark restore (#192). The server-side storage also requires `StoredMessage`, `_store_message()`, `_current_stream_deps`, `html_deps_serialized`, and dedicated `_on_bookmark_ui`/`_on_restore_ui` logic. + +The R package doesn't have a `messages()` equivalent at all. + +## Design + +### Single source of truth + +The React component owns the UI message state. The server sends messages to the client as it does today, but no longer maintains a parallel copy. + +### Client → Server: Latest message input + +After each completed message — on `chunk_end` (stream) or `message` (non-streamed) — the React component calls `Shiny.setInputValue("_message", {role, content, content_type})` with the latest completed message only. This keeps per-message wire cost minimal. + +### `messages()` API + +**Python**: Accumulates the per-message input values into a list. `messages()` reads this accumulated list. Since Shiny input values are reactive, `messages()` remains reactive. There is a brief async delay (client round-trip) between the server finishing a response and `messages()` updating — this is acceptable. + +**R**: Exposes the raw input value as a simple accessor (latest message only). Users accumulate if they need the full history. + +### Bookmark save + +Shiny bookmarking is server-driven (`on_bookmark`/`on_restore`), so the client can't save state independently. The protocol: + +1. During `on_bookmark`, the server sends a custom message asking the client for its full message array. +2. The client serializes its React state (`messages` from the reducer) and responds (e.g., via `setInputValue` with a one-time bookmark-specific key). +3. The server includes this in the bookmark state alongside the LLM client state (which is saved via `_on_bookmark_client` as today). + +### Bookmark restore + +1. `_on_restore_client` runs as today — restores LLM client turns. +2. The server sends the saved message array to the client via a new `restore_messages` action. +3. The React reducer bulk-loads the messages into state. +4. If any messages originally had HTMLDependencies, the dep dicts are included in the saved state. On restore, the server registers the file routes (lightweight `_process_ui` call), and the client calls `renderDependenciesAsync` to inject the ``/`\n * ^\n * ```\n *\n * @type {State}\n */\n function continuationRawTagOpen(code) {\n if (code === 47) {\n effects.consume(code);\n buffer = '';\n return continuationRawEndTag;\n }\n return continuation(code);\n }\n\n /**\n * In raw continuation, after ` | \n * ^^^^^^\n * ```\n *\n * @type {State}\n */\n function continuationRawEndTag(code) {\n if (code === 62) {\n const name = buffer.toLowerCase();\n if (htmlRawNames.includes(name)) {\n effects.consume(code);\n return continuationClose;\n }\n return continuation(code);\n }\n if (asciiAlpha(code) && buffer.length < 8) {\n // Always the case.\n effects.consume(code);\n buffer += String.fromCharCode(code);\n return continuationRawEndTag;\n }\n return continuation(code);\n }\n\n /**\n * In cdata continuation, after `]`, expecting `]>`.\n *\n * ```markdown\n * > | &<]]>\n * ^\n * ```\n *\n * @type {State}\n */\n function continuationCdataInside(code) {\n if (code === 93) {\n effects.consume(code);\n return continuationDeclarationInside;\n }\n return continuation(code);\n }\n\n /**\n * In declaration or instruction continuation, at `>`.\n *\n * ```markdown\n * > | \n * ^\n * > | \n * ^\n * > | \n * ^\n * > | \n * ^\n * > | &<]]>\n * ^\n * ```\n *\n * @type {State}\n */\n function continuationDeclarationInside(code) {\n if (code === 62) {\n effects.consume(code);\n return continuationClose;\n }\n\n // More dashes.\n if (code === 45 && marker === 2) {\n effects.consume(code);\n return continuationDeclarationInside;\n }\n return continuation(code);\n }\n\n /**\n * In closed continuation: everything we get until the eol/eof is part of it.\n *\n * ```markdown\n * > | \n * ^\n * ```\n *\n * @type {State}\n */\n function continuationClose(code) {\n if (code === null || markdownLineEnding(code)) {\n effects.exit(\"htmlFlowData\");\n return continuationAfter(code);\n }\n effects.consume(code);\n return continuationClose;\n }\n\n /**\n * Done.\n *\n * ```markdown\n * > | \n * ^\n * ```\n *\n * @type {State}\n */\n function continuationAfter(code) {\n effects.exit(\"htmlFlow\");\n // // Feel free to interrupt.\n // tokenizer.interrupt = false\n // // No longer concrete.\n // tokenizer.concrete = false\n return ok(code);\n }\n}\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeNonLazyContinuationStart(effects, ok, nok) {\n const self = this;\n return start;\n\n /**\n * At eol, before continuation.\n *\n * ```markdown\n * > | * ```js\n * ^\n * | b\n * ```\n *\n * @type {State}\n */\n function start(code) {\n if (markdownLineEnding(code)) {\n effects.enter(\"lineEnding\");\n effects.consume(code);\n effects.exit(\"lineEnding\");\n return after;\n }\n return nok(code);\n }\n\n /**\n * A continuation.\n *\n * ```markdown\n * | * ```js\n * > | b\n * ^\n * ```\n *\n * @type {State}\n */\n function after(code) {\n return self.parser.lazy[self.now().line] ? nok(code) : ok(code);\n }\n}\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeBlankLineBefore(effects, ok, nok) {\n return start;\n\n /**\n * Before eol, expecting blank line.\n *\n * ```markdown\n * > |
\n * ^\n * |\n * ```\n *\n * @type {State}\n */\n function start(code) {\n effects.enter(\"lineEnding\");\n effects.consume(code);\n effects.exit(\"lineEnding\");\n return effects.attempt(blankLine, ok, nok);\n }\n}", "/**\n * @import {\n * Code,\n * Construct,\n * State,\n * TokenizeContext,\n * Tokenizer\n * } from 'micromark-util-types'\n */\n\nimport { factorySpace } from 'micromark-factory-space';\nimport { asciiAlphanumeric, asciiAlpha, markdownLineEndingOrSpace, markdownLineEnding, markdownSpace } from 'micromark-util-character';\n/** @type {Construct} */\nexport const htmlText = {\n name: 'htmlText',\n tokenize: tokenizeHtmlText\n};\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeHtmlText(effects, ok, nok) {\n const self = this;\n /** @type {NonNullable | undefined} */\n let marker;\n /** @type {number} */\n let index;\n /** @type {State} */\n let returnState;\n return start;\n\n /**\n * Start of HTML (text).\n *\n * ```markdown\n * > | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function start(code) {\n effects.enter(\"htmlText\");\n effects.enter(\"htmlTextData\");\n effects.consume(code);\n return open;\n }\n\n /**\n * After `<`, at tag name or other stuff.\n *\n * ```markdown\n * > | a c\n * ^\n * > | a c\n * ^\n * > | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function open(code) {\n if (code === 33) {\n effects.consume(code);\n return declarationOpen;\n }\n if (code === 47) {\n effects.consume(code);\n return tagCloseStart;\n }\n if (code === 63) {\n effects.consume(code);\n return instruction;\n }\n\n // ASCII alphabetical.\n if (asciiAlpha(code)) {\n effects.consume(code);\n return tagOpen;\n }\n return nok(code);\n }\n\n /**\n * After ` | a c\n * ^\n * > | a c\n * ^\n * > | a &<]]> c\n * ^\n * ```\n *\n * @type {State}\n */\n function declarationOpen(code) {\n if (code === 45) {\n effects.consume(code);\n return commentOpenInside;\n }\n if (code === 91) {\n effects.consume(code);\n index = 0;\n return cdataOpenInside;\n }\n if (asciiAlpha(code)) {\n effects.consume(code);\n return declaration;\n }\n return nok(code);\n }\n\n /**\n * In a comment, after ` | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function commentOpenInside(code) {\n if (code === 45) {\n effects.consume(code);\n return commentEnd;\n }\n return nok(code);\n }\n\n /**\n * In comment.\n *\n * ```markdown\n * > | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function comment(code) {\n if (code === null) {\n return nok(code);\n }\n if (code === 45) {\n effects.consume(code);\n return commentClose;\n }\n if (markdownLineEnding(code)) {\n returnState = comment;\n return lineEndingBefore(code);\n }\n effects.consume(code);\n return comment;\n }\n\n /**\n * In comment, after `-`.\n *\n * ```markdown\n * > | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function commentClose(code) {\n if (code === 45) {\n effects.consume(code);\n return commentEnd;\n }\n return comment(code);\n }\n\n /**\n * In comment, after `--`.\n *\n * ```markdown\n * > | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function commentEnd(code) {\n return code === 62 ? end(code) : code === 45 ? commentClose(code) : comment(code);\n }\n\n /**\n * After ` | a &<]]> b\n * ^^^^^^\n * ```\n *\n * @type {State}\n */\n function cdataOpenInside(code) {\n const value = \"CDATA[\";\n if (code === value.charCodeAt(index++)) {\n effects.consume(code);\n return index === value.length ? cdata : cdataOpenInside;\n }\n return nok(code);\n }\n\n /**\n * In CDATA.\n *\n * ```markdown\n * > | a &<]]> b\n * ^^^\n * ```\n *\n * @type {State}\n */\n function cdata(code) {\n if (code === null) {\n return nok(code);\n }\n if (code === 93) {\n effects.consume(code);\n return cdataClose;\n }\n if (markdownLineEnding(code)) {\n returnState = cdata;\n return lineEndingBefore(code);\n }\n effects.consume(code);\n return cdata;\n }\n\n /**\n * In CDATA, after `]`, at another `]`.\n *\n * ```markdown\n * > | a &<]]> b\n * ^\n * ```\n *\n * @type {State}\n */\n function cdataClose(code) {\n if (code === 93) {\n effects.consume(code);\n return cdataEnd;\n }\n return cdata(code);\n }\n\n /**\n * In CDATA, after `]]`, at `>`.\n *\n * ```markdown\n * > | a &<]]> b\n * ^\n * ```\n *\n * @type {State}\n */\n function cdataEnd(code) {\n if (code === 62) {\n return end(code);\n }\n if (code === 93) {\n effects.consume(code);\n return cdataEnd;\n }\n return cdata(code);\n }\n\n /**\n * In declaration.\n *\n * ```markdown\n * > | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function declaration(code) {\n if (code === null || code === 62) {\n return end(code);\n }\n if (markdownLineEnding(code)) {\n returnState = declaration;\n return lineEndingBefore(code);\n }\n effects.consume(code);\n return declaration;\n }\n\n /**\n * In instruction.\n *\n * ```markdown\n * > | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function instruction(code) {\n if (code === null) {\n return nok(code);\n }\n if (code === 63) {\n effects.consume(code);\n return instructionClose;\n }\n if (markdownLineEnding(code)) {\n returnState = instruction;\n return lineEndingBefore(code);\n }\n effects.consume(code);\n return instruction;\n }\n\n /**\n * In instruction, after `?`, at `>`.\n *\n * ```markdown\n * > | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function instructionClose(code) {\n return code === 62 ? end(code) : instruction(code);\n }\n\n /**\n * After ` | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function tagCloseStart(code) {\n // ASCII alphabetical.\n if (asciiAlpha(code)) {\n effects.consume(code);\n return tagClose;\n }\n return nok(code);\n }\n\n /**\n * After ` | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function tagClose(code) {\n // ASCII alphanumerical and `-`.\n if (code === 45 || asciiAlphanumeric(code)) {\n effects.consume(code);\n return tagClose;\n }\n return tagCloseBetween(code);\n }\n\n /**\n * In closing tag, after tag name.\n *\n * ```markdown\n * > | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function tagCloseBetween(code) {\n if (markdownLineEnding(code)) {\n returnState = tagCloseBetween;\n return lineEndingBefore(code);\n }\n if (markdownSpace(code)) {\n effects.consume(code);\n return tagCloseBetween;\n }\n return end(code);\n }\n\n /**\n * After ` | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function tagOpen(code) {\n // ASCII alphanumerical and `-`.\n if (code === 45 || asciiAlphanumeric(code)) {\n effects.consume(code);\n return tagOpen;\n }\n if (code === 47 || code === 62 || markdownLineEndingOrSpace(code)) {\n return tagOpenBetween(code);\n }\n return nok(code);\n }\n\n /**\n * In opening tag, after tag name.\n *\n * ```markdown\n * > | a c\n * ^\n * ```\n *\n * @type {State}\n */\n function tagOpenBetween(code) {\n if (code === 47) {\n effects.consume(code);\n return end;\n }\n\n // ASCII alphabetical and `:` and `_`.\n if (code === 58 || code === 95 || asciiAlpha(code)) {\n effects.consume(code);\n return tagOpenAttributeName;\n }\n if (markdownLineEnding(code)) {\n returnState = tagOpenBetween;\n return lineEndingBefore(code);\n }\n if (markdownSpace(code)) {\n effects.consume(code);\n return tagOpenBetween;\n }\n return end(code);\n }\n\n /**\n * In attribute name.\n *\n * ```markdown\n * > | a d\n * ^\n * ```\n *\n * @type {State}\n */\n function tagOpenAttributeName(code) {\n // ASCII alphabetical and `-`, `.`, `:`, and `_`.\n if (code === 45 || code === 46 || code === 58 || code === 95 || asciiAlphanumeric(code)) {\n effects.consume(code);\n return tagOpenAttributeName;\n }\n return tagOpenAttributeNameAfter(code);\n }\n\n /**\n * After attribute name, before initializer, the end of the tag, or\n * whitespace.\n *\n * ```markdown\n * > | a d\n * ^\n * ```\n *\n * @type {State}\n */\n function tagOpenAttributeNameAfter(code) {\n if (code === 61) {\n effects.consume(code);\n return tagOpenAttributeValueBefore;\n }\n if (markdownLineEnding(code)) {\n returnState = tagOpenAttributeNameAfter;\n return lineEndingBefore(code);\n }\n if (markdownSpace(code)) {\n effects.consume(code);\n return tagOpenAttributeNameAfter;\n }\n return tagOpenBetween(code);\n }\n\n /**\n * Before unquoted, double quoted, or single quoted attribute value, allowing\n * whitespace.\n *\n * ```markdown\n * > | a e\n * ^\n * ```\n *\n * @type {State}\n */\n function tagOpenAttributeValueBefore(code) {\n if (code === null || code === 60 || code === 61 || code === 62 || code === 96) {\n return nok(code);\n }\n if (code === 34 || code === 39) {\n effects.consume(code);\n marker = code;\n return tagOpenAttributeValueQuoted;\n }\n if (markdownLineEnding(code)) {\n returnState = tagOpenAttributeValueBefore;\n return lineEndingBefore(code);\n }\n if (markdownSpace(code)) {\n effects.consume(code);\n return tagOpenAttributeValueBefore;\n }\n effects.consume(code);\n return tagOpenAttributeValueUnquoted;\n }\n\n /**\n * In double or single quoted attribute value.\n *\n * ```markdown\n * > | a e\n * ^\n * ```\n *\n * @type {State}\n */\n function tagOpenAttributeValueQuoted(code) {\n if (code === marker) {\n effects.consume(code);\n marker = undefined;\n return tagOpenAttributeValueQuotedAfter;\n }\n if (code === null) {\n return nok(code);\n }\n if (markdownLineEnding(code)) {\n returnState = tagOpenAttributeValueQuoted;\n return lineEndingBefore(code);\n }\n effects.consume(code);\n return tagOpenAttributeValueQuoted;\n }\n\n /**\n * In unquoted attribute value.\n *\n * ```markdown\n * > | a e\n * ^\n * ```\n *\n * @type {State}\n */\n function tagOpenAttributeValueUnquoted(code) {\n if (code === null || code === 34 || code === 39 || code === 60 || code === 61 || code === 96) {\n return nok(code);\n }\n if (code === 47 || code === 62 || markdownLineEndingOrSpace(code)) {\n return tagOpenBetween(code);\n }\n effects.consume(code);\n return tagOpenAttributeValueUnquoted;\n }\n\n /**\n * After double or single quoted attribute value, before whitespace or the end\n * of the tag.\n *\n * ```markdown\n * > | a e\n * ^\n * ```\n *\n * @type {State}\n */\n function tagOpenAttributeValueQuotedAfter(code) {\n if (code === 47 || code === 62 || markdownLineEndingOrSpace(code)) {\n return tagOpenBetween(code);\n }\n return nok(code);\n }\n\n /**\n * In certain circumstances of a tag where only an `>` is allowed.\n *\n * ```markdown\n * > | a e\n * ^\n * ```\n *\n * @type {State}\n */\n function end(code) {\n if (code === 62) {\n effects.consume(code);\n effects.exit(\"htmlTextData\");\n effects.exit(\"htmlText\");\n return ok;\n }\n return nok(code);\n }\n\n /**\n * At eol.\n *\n * > \uD83D\uDC49 **Note**: we can\u2019t have blank lines in text, so no need to worry about\n * > empty tokens.\n *\n * ```markdown\n * > | a \n * ```\n *\n * @type {State}\n */\n function lineEndingBefore(code) {\n effects.exit(\"htmlTextData\");\n effects.enter(\"lineEnding\");\n effects.consume(code);\n effects.exit(\"lineEnding\");\n return lineEndingAfter;\n }\n\n /**\n * After eol, at optional whitespace.\n *\n * > \uD83D\uDC49 **Note**: we can\u2019t have blank lines in text, so no need to worry about\n * > empty tokens.\n *\n * ```markdown\n * | a \n * ^\n * ```\n *\n * @type {State}\n */\n function lineEndingAfter(code) {\n // Always populated by defaults.\n\n return markdownSpace(code) ? factorySpace(effects, lineEndingAfterPrefix, \"linePrefix\", self.parser.constructs.disable.null.includes('codeIndented') ? undefined : 4)(code) : lineEndingAfterPrefix(code);\n }\n\n /**\n * After eol, after optional whitespace.\n *\n * > \uD83D\uDC49 **Note**: we can\u2019t have blank lines in text, so no need to worry about\n * > empty tokens.\n *\n * ```markdown\n * | a \n * ^\n * ```\n *\n * @type {State}\n */\n function lineEndingAfterPrefix(code) {\n effects.enter(\"htmlTextData\");\n return returnState(code);\n }\n}", "/**\n * @import {\n * Construct,\n * Event,\n * Resolver,\n * State,\n * TokenizeContext,\n * Tokenizer,\n * Token\n * } from 'micromark-util-types'\n */\n\nimport { factoryDestination } from 'micromark-factory-destination';\nimport { factoryLabel } from 'micromark-factory-label';\nimport { factoryTitle } from 'micromark-factory-title';\nimport { factoryWhitespace } from 'micromark-factory-whitespace';\nimport { markdownLineEndingOrSpace } from 'micromark-util-character';\nimport { push, splice } from 'micromark-util-chunked';\nimport { normalizeIdentifier } from 'micromark-util-normalize-identifier';\nimport { resolveAll } from 'micromark-util-resolve-all';\n/** @type {Construct} */\nexport const labelEnd = {\n name: 'labelEnd',\n resolveAll: resolveAllLabelEnd,\n resolveTo: resolveToLabelEnd,\n tokenize: tokenizeLabelEnd\n};\n\n/** @type {Construct} */\nconst resourceConstruct = {\n tokenize: tokenizeResource\n};\n/** @type {Construct} */\nconst referenceFullConstruct = {\n tokenize: tokenizeReferenceFull\n};\n/** @type {Construct} */\nconst referenceCollapsedConstruct = {\n tokenize: tokenizeReferenceCollapsed\n};\n\n/** @type {Resolver} */\nfunction resolveAllLabelEnd(events) {\n let index = -1;\n /** @type {Array} */\n const newEvents = [];\n while (++index < events.length) {\n const token = events[index][1];\n newEvents.push(events[index]);\n if (token.type === \"labelImage\" || token.type === \"labelLink\" || token.type === \"labelEnd\") {\n // Remove the marker.\n const offset = token.type === \"labelImage\" ? 4 : 2;\n token.type = \"data\";\n index += offset;\n }\n }\n\n // If the events are equal, we don't have to copy newEvents to events\n if (events.length !== newEvents.length) {\n splice(events, 0, events.length, newEvents);\n }\n return events;\n}\n\n/** @type {Resolver} */\nfunction resolveToLabelEnd(events, context) {\n let index = events.length;\n let offset = 0;\n /** @type {Token} */\n let token;\n /** @type {number | undefined} */\n let open;\n /** @type {number | undefined} */\n let close;\n /** @type {Array} */\n let media;\n\n // Find an opening.\n while (index--) {\n token = events[index][1];\n if (open) {\n // If we see another link, or inactive link label, we\u2019ve been here before.\n if (token.type === \"link\" || token.type === \"labelLink\" && token._inactive) {\n break;\n }\n\n // Mark other link openings as inactive, as we can\u2019t have links in\n // links.\n if (events[index][0] === 'enter' && token.type === \"labelLink\") {\n token._inactive = true;\n }\n } else if (close) {\n if (events[index][0] === 'enter' && (token.type === \"labelImage\" || token.type === \"labelLink\") && !token._balanced) {\n open = index;\n if (token.type !== \"labelLink\") {\n offset = 2;\n break;\n }\n }\n } else if (token.type === \"labelEnd\") {\n close = index;\n }\n }\n const group = {\n type: events[open][1].type === \"labelLink\" ? \"link\" : \"image\",\n start: {\n ...events[open][1].start\n },\n end: {\n ...events[events.length - 1][1].end\n }\n };\n const label = {\n type: \"label\",\n start: {\n ...events[open][1].start\n },\n end: {\n ...events[close][1].end\n }\n };\n const text = {\n type: \"labelText\",\n start: {\n ...events[open + offset + 2][1].end\n },\n end: {\n ...events[close - 2][1].start\n }\n };\n media = [['enter', group, context], ['enter', label, context]];\n\n // Opening marker.\n media = push(media, events.slice(open + 1, open + offset + 3));\n\n // Text open.\n media = push(media, [['enter', text, context]]);\n\n // Always populated by defaults.\n\n // Between.\n media = push(media, resolveAll(context.parser.constructs.insideSpan.null, events.slice(open + offset + 4, close - 3), context));\n\n // Text close, marker close, label close.\n media = push(media, [['exit', text, context], events[close - 2], events[close - 1], ['exit', label, context]]);\n\n // Reference, resource, or so.\n media = push(media, events.slice(close + 1));\n\n // Media close.\n media = push(media, [['exit', group, context]]);\n splice(events, open, events.length, media);\n return events;\n}\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeLabelEnd(effects, ok, nok) {\n const self = this;\n let index = self.events.length;\n /** @type {Token} */\n let labelStart;\n /** @type {boolean} */\n let defined;\n\n // Find an opening.\n while (index--) {\n if ((self.events[index][1].type === \"labelImage\" || self.events[index][1].type === \"labelLink\") && !self.events[index][1]._balanced) {\n labelStart = self.events[index][1];\n break;\n }\n }\n return start;\n\n /**\n * Start of label end.\n *\n * ```markdown\n * > | [a](b) c\n * ^\n * > | [a][b] c\n * ^\n * > | [a][] b\n * ^\n * > | [a] b\n * ```\n *\n * @type {State}\n */\n function start(code) {\n // If there is not an okay opening.\n if (!labelStart) {\n return nok(code);\n }\n\n // If the corresponding label (link) start is marked as inactive,\n // it means we\u2019d be wrapping a link, like this:\n //\n // ```markdown\n // > | a [b [c](d) e](f) g.\n // ^\n // ```\n //\n // We can\u2019t have that, so it\u2019s just balanced brackets.\n if (labelStart._inactive) {\n return labelEndNok(code);\n }\n defined = self.parser.defined.includes(normalizeIdentifier(self.sliceSerialize({\n start: labelStart.end,\n end: self.now()\n })));\n effects.enter(\"labelEnd\");\n effects.enter(\"labelMarker\");\n effects.consume(code);\n effects.exit(\"labelMarker\");\n effects.exit(\"labelEnd\");\n return after;\n }\n\n /**\n * After `]`.\n *\n * ```markdown\n * > | [a](b) c\n * ^\n * > | [a][b] c\n * ^\n * > | [a][] b\n * ^\n * > | [a] b\n * ^\n * ```\n *\n * @type {State}\n */\n function after(code) {\n // Note: `markdown-rs` also parses GFM footnotes here, which for us is in\n // an extension.\n\n // Resource (`[asd](fgh)`)?\n if (code === 40) {\n return effects.attempt(resourceConstruct, labelEndOk, defined ? labelEndOk : labelEndNok)(code);\n }\n\n // Full (`[asd][fgh]`) or collapsed (`[asd][]`) reference?\n if (code === 91) {\n return effects.attempt(referenceFullConstruct, labelEndOk, defined ? referenceNotFull : labelEndNok)(code);\n }\n\n // Shortcut (`[asd]`) reference?\n return defined ? labelEndOk(code) : labelEndNok(code);\n }\n\n /**\n * After `]`, at `[`, but not at a full reference.\n *\n * > \uD83D\uDC49 **Note**: we only get here if the label is defined.\n *\n * ```markdown\n * > | [a][] b\n * ^\n * > | [a] b\n * ^\n * ```\n *\n * @type {State}\n */\n function referenceNotFull(code) {\n return effects.attempt(referenceCollapsedConstruct, labelEndOk, labelEndNok)(code);\n }\n\n /**\n * Done, we found something.\n *\n * ```markdown\n * > | [a](b) c\n * ^\n * > | [a][b] c\n * ^\n * > | [a][] b\n * ^\n * > | [a] b\n * ^\n * ```\n *\n * @type {State}\n */\n function labelEndOk(code) {\n // Note: `markdown-rs` does a bunch of stuff here.\n return ok(code);\n }\n\n /**\n * Done, it\u2019s nothing.\n *\n * There was an okay opening, but we didn\u2019t match anything.\n *\n * ```markdown\n * > | [a](b c\n * ^\n * > | [a][b c\n * ^\n * > | [a] b\n * ^\n * ```\n *\n * @type {State}\n */\n function labelEndNok(code) {\n labelStart._balanced = true;\n return nok(code);\n }\n}\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeResource(effects, ok, nok) {\n return resourceStart;\n\n /**\n * At a resource.\n *\n * ```markdown\n * > | [a](b) c\n * ^\n * ```\n *\n * @type {State}\n */\n function resourceStart(code) {\n effects.enter(\"resource\");\n effects.enter(\"resourceMarker\");\n effects.consume(code);\n effects.exit(\"resourceMarker\");\n return resourceBefore;\n }\n\n /**\n * In resource, after `(`, at optional whitespace.\n *\n * ```markdown\n * > | [a](b) c\n * ^\n * ```\n *\n * @type {State}\n */\n function resourceBefore(code) {\n return markdownLineEndingOrSpace(code) ? factoryWhitespace(effects, resourceOpen)(code) : resourceOpen(code);\n }\n\n /**\n * In resource, after optional whitespace, at `)` or a destination.\n *\n * ```markdown\n * > | [a](b) c\n * ^\n * ```\n *\n * @type {State}\n */\n function resourceOpen(code) {\n if (code === 41) {\n return resourceEnd(code);\n }\n return factoryDestination(effects, resourceDestinationAfter, resourceDestinationMissing, \"resourceDestination\", \"resourceDestinationLiteral\", \"resourceDestinationLiteralMarker\", \"resourceDestinationRaw\", \"resourceDestinationString\", 32)(code);\n }\n\n /**\n * In resource, after destination, at optional whitespace.\n *\n * ```markdown\n * > | [a](b) c\n * ^\n * ```\n *\n * @type {State}\n */\n function resourceDestinationAfter(code) {\n return markdownLineEndingOrSpace(code) ? factoryWhitespace(effects, resourceBetween)(code) : resourceEnd(code);\n }\n\n /**\n * At invalid destination.\n *\n * ```markdown\n * > | [a](<<) b\n * ^\n * ```\n *\n * @type {State}\n */\n function resourceDestinationMissing(code) {\n return nok(code);\n }\n\n /**\n * In resource, after destination and whitespace, at `(` or title.\n *\n * ```markdown\n * > | [a](b ) c\n * ^\n * ```\n *\n * @type {State}\n */\n function resourceBetween(code) {\n if (code === 34 || code === 39 || code === 40) {\n return factoryTitle(effects, resourceTitleAfter, nok, \"resourceTitle\", \"resourceTitleMarker\", \"resourceTitleString\")(code);\n }\n return resourceEnd(code);\n }\n\n /**\n * In resource, after title, at optional whitespace.\n *\n * ```markdown\n * > | [a](b \"c\") d\n * ^\n * ```\n *\n * @type {State}\n */\n function resourceTitleAfter(code) {\n return markdownLineEndingOrSpace(code) ? factoryWhitespace(effects, resourceEnd)(code) : resourceEnd(code);\n }\n\n /**\n * In resource, at `)`.\n *\n * ```markdown\n * > | [a](b) d\n * ^\n * ```\n *\n * @type {State}\n */\n function resourceEnd(code) {\n if (code === 41) {\n effects.enter(\"resourceMarker\");\n effects.consume(code);\n effects.exit(\"resourceMarker\");\n effects.exit(\"resource\");\n return ok;\n }\n return nok(code);\n }\n}\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeReferenceFull(effects, ok, nok) {\n const self = this;\n return referenceFull;\n\n /**\n * In a reference (full), at the `[`.\n *\n * ```markdown\n * > | [a][b] d\n * ^\n * ```\n *\n * @type {State}\n */\n function referenceFull(code) {\n return factoryLabel.call(self, effects, referenceFullAfter, referenceFullMissing, \"reference\", \"referenceMarker\", \"referenceString\")(code);\n }\n\n /**\n * In a reference (full), after `]`.\n *\n * ```markdown\n * > | [a][b] d\n * ^\n * ```\n *\n * @type {State}\n */\n function referenceFullAfter(code) {\n return self.parser.defined.includes(normalizeIdentifier(self.sliceSerialize(self.events[self.events.length - 1][1]).slice(1, -1))) ? ok(code) : nok(code);\n }\n\n /**\n * In reference (full) that was missing.\n *\n * ```markdown\n * > | [a][b d\n * ^\n * ```\n *\n * @type {State}\n */\n function referenceFullMissing(code) {\n return nok(code);\n }\n}\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeReferenceCollapsed(effects, ok, nok) {\n return referenceCollapsedStart;\n\n /**\n * In reference (collapsed), at `[`.\n *\n * > \uD83D\uDC49 **Note**: we only get here if the label is defined.\n *\n * ```markdown\n * > | [a][] d\n * ^\n * ```\n *\n * @type {State}\n */\n function referenceCollapsedStart(code) {\n // We only attempt a collapsed label if there\u2019s a `[`.\n\n effects.enter(\"reference\");\n effects.enter(\"referenceMarker\");\n effects.consume(code);\n effects.exit(\"referenceMarker\");\n return referenceCollapsedOpen;\n }\n\n /**\n * In reference (collapsed), at `]`.\n *\n * > \uD83D\uDC49 **Note**: we only get here if the label is defined.\n *\n * ```markdown\n * > | [a][] d\n * ^\n * ```\n *\n * @type {State}\n */\n function referenceCollapsedOpen(code) {\n if (code === 93) {\n effects.enter(\"referenceMarker\");\n effects.consume(code);\n effects.exit(\"referenceMarker\");\n effects.exit(\"reference\");\n return ok;\n }\n return nok(code);\n }\n}", "/**\n * @import {\n * Construct,\n * State,\n * TokenizeContext,\n * Tokenizer\n * } from 'micromark-util-types'\n */\n\nimport { labelEnd } from './label-end.js';\n\n/** @type {Construct} */\nexport const labelStartImage = {\n name: 'labelStartImage',\n resolveAll: labelEnd.resolveAll,\n tokenize: tokenizeLabelStartImage\n};\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeLabelStartImage(effects, ok, nok) {\n const self = this;\n return start;\n\n /**\n * Start of label (image) start.\n *\n * ```markdown\n * > | a ![b] c\n * ^\n * ```\n *\n * @type {State}\n */\n function start(code) {\n effects.enter(\"labelImage\");\n effects.enter(\"labelImageMarker\");\n effects.consume(code);\n effects.exit(\"labelImageMarker\");\n return open;\n }\n\n /**\n * After `!`, at `[`.\n *\n * ```markdown\n * > | a ![b] c\n * ^\n * ```\n *\n * @type {State}\n */\n function open(code) {\n if (code === 91) {\n effects.enter(\"labelMarker\");\n effects.consume(code);\n effects.exit(\"labelMarker\");\n effects.exit(\"labelImage\");\n return after;\n }\n return nok(code);\n }\n\n /**\n * After `![`.\n *\n * ```markdown\n * > | a ![b] c\n * ^\n * ```\n *\n * This is needed in because, when GFM footnotes are enabled, images never\n * form when started with a `^`.\n * Instead, links form:\n *\n * ```markdown\n * ![^a](b)\n *\n * ![^a][b]\n *\n * [b]: c\n * ```\n *\n * ```html\n *

!^a

\n *

!^a

\n * ```\n *\n * @type {State}\n */\n function after(code) {\n // To do: use a new field to do this, this is still needed for\n // `micromark-extension-gfm-footnote`, but the `label-start-link`\n // behavior isn\u2019t.\n // Hidden footnotes hook.\n /* c8 ignore next 3 */\n return code === 94 && '_hiddenFootnoteSupport' in self.parser.constructs ? nok(code) : ok(code);\n }\n}", "/**\n * @import {\n * Construct,\n * State,\n * TokenizeContext,\n * Tokenizer\n * } from 'micromark-util-types'\n */\n\nimport { labelEnd } from './label-end.js';\n\n/** @type {Construct} */\nexport const labelStartLink = {\n name: 'labelStartLink',\n resolveAll: labelEnd.resolveAll,\n tokenize: tokenizeLabelStartLink\n};\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeLabelStartLink(effects, ok, nok) {\n const self = this;\n return start;\n\n /**\n * Start of label (link) start.\n *\n * ```markdown\n * > | a [b] c\n * ^\n * ```\n *\n * @type {State}\n */\n function start(code) {\n effects.enter(\"labelLink\");\n effects.enter(\"labelMarker\");\n effects.consume(code);\n effects.exit(\"labelMarker\");\n effects.exit(\"labelLink\");\n return after;\n }\n\n /** @type {State} */\n function after(code) {\n // To do: this isn\u2019t needed in `micromark-extension-gfm-footnote`,\n // remove.\n // Hidden footnotes hook.\n /* c8 ignore next 3 */\n return code === 94 && '_hiddenFootnoteSupport' in self.parser.constructs ? nok(code) : ok(code);\n }\n}", "/**\n * @import {\n * Construct,\n * State,\n * TokenizeContext,\n * Tokenizer\n * } from 'micromark-util-types'\n */\n\nimport { factorySpace } from 'micromark-factory-space';\nimport { markdownLineEnding } from 'micromark-util-character';\n/** @type {Construct} */\nexport const lineEnding = {\n name: 'lineEnding',\n tokenize: tokenizeLineEnding\n};\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeLineEnding(effects, ok) {\n return start;\n\n /** @type {State} */\n function start(code) {\n effects.enter(\"lineEnding\");\n effects.consume(code);\n effects.exit(\"lineEnding\");\n return factorySpace(effects, ok, \"linePrefix\");\n }\n}", "/**\n * @import {\n * Code,\n * Construct,\n * State,\n * TokenizeContext,\n * Tokenizer\n * } from 'micromark-util-types'\n */\n\nimport { factorySpace } from 'micromark-factory-space';\nimport { markdownLineEnding, markdownSpace } from 'micromark-util-character';\n/** @type {Construct} */\nexport const thematicBreak = {\n name: 'thematicBreak',\n tokenize: tokenizeThematicBreak\n};\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeThematicBreak(effects, ok, nok) {\n let size = 0;\n /** @type {NonNullable} */\n let marker;\n return start;\n\n /**\n * Start of thematic break.\n *\n * ```markdown\n * > | ***\n * ^\n * ```\n *\n * @type {State}\n */\n function start(code) {\n effects.enter(\"thematicBreak\");\n // To do: parse indent like `markdown-rs`.\n return before(code);\n }\n\n /**\n * After optional whitespace, at marker.\n *\n * ```markdown\n * > | ***\n * ^\n * ```\n *\n * @type {State}\n */\n function before(code) {\n marker = code;\n return atBreak(code);\n }\n\n /**\n * After something, before something else.\n *\n * ```markdown\n * > | ***\n * ^\n * ```\n *\n * @type {State}\n */\n function atBreak(code) {\n if (code === marker) {\n effects.enter(\"thematicBreakSequence\");\n return sequence(code);\n }\n if (size >= 3 && (code === null || markdownLineEnding(code))) {\n effects.exit(\"thematicBreak\");\n return ok(code);\n }\n return nok(code);\n }\n\n /**\n * In sequence.\n *\n * ```markdown\n * > | ***\n * ^\n * ```\n *\n * @type {State}\n */\n function sequence(code) {\n if (code === marker) {\n effects.consume(code);\n size++;\n return sequence;\n }\n effects.exit(\"thematicBreakSequence\");\n return markdownSpace(code) ? factorySpace(effects, atBreak, \"whitespace\")(code) : atBreak(code);\n }\n}", "/**\n * @import {\n * Code,\n * Construct,\n * Exiter,\n * State,\n * TokenizeContext,\n * Tokenizer\n * } from 'micromark-util-types'\n */\n\nimport { factorySpace } from 'micromark-factory-space';\nimport { asciiDigit, markdownSpace } from 'micromark-util-character';\nimport { blankLine } from './blank-line.js';\nimport { thematicBreak } from './thematic-break.js';\n\n/** @type {Construct} */\nexport const list = {\n continuation: {\n tokenize: tokenizeListContinuation\n },\n exit: tokenizeListEnd,\n name: 'list',\n tokenize: tokenizeListStart\n};\n\n/** @type {Construct} */\nconst listItemPrefixWhitespaceConstruct = {\n partial: true,\n tokenize: tokenizeListItemPrefixWhitespace\n};\n\n/** @type {Construct} */\nconst indentConstruct = {\n partial: true,\n tokenize: tokenizeIndent\n};\n\n// To do: `markdown-rs` parses list items on their own and later stitches them\n// together.\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeListStart(effects, ok, nok) {\n const self = this;\n const tail = self.events[self.events.length - 1];\n let initialSize = tail && tail[1].type === \"linePrefix\" ? tail[2].sliceSerialize(tail[1], true).length : 0;\n let size = 0;\n return start;\n\n /** @type {State} */\n function start(code) {\n const kind = self.containerState.type || (code === 42 || code === 43 || code === 45 ? \"listUnordered\" : \"listOrdered\");\n if (kind === \"listUnordered\" ? !self.containerState.marker || code === self.containerState.marker : asciiDigit(code)) {\n if (!self.containerState.type) {\n self.containerState.type = kind;\n effects.enter(kind, {\n _container: true\n });\n }\n if (kind === \"listUnordered\") {\n effects.enter(\"listItemPrefix\");\n return code === 42 || code === 45 ? effects.check(thematicBreak, nok, atMarker)(code) : atMarker(code);\n }\n if (!self.interrupt || code === 49) {\n effects.enter(\"listItemPrefix\");\n effects.enter(\"listItemValue\");\n return inside(code);\n }\n }\n return nok(code);\n }\n\n /** @type {State} */\n function inside(code) {\n if (asciiDigit(code) && ++size < 10) {\n effects.consume(code);\n return inside;\n }\n if ((!self.interrupt || size < 2) && (self.containerState.marker ? code === self.containerState.marker : code === 41 || code === 46)) {\n effects.exit(\"listItemValue\");\n return atMarker(code);\n }\n return nok(code);\n }\n\n /**\n * @type {State}\n **/\n function atMarker(code) {\n effects.enter(\"listItemMarker\");\n effects.consume(code);\n effects.exit(\"listItemMarker\");\n self.containerState.marker = self.containerState.marker || code;\n return effects.check(blankLine,\n // Can\u2019t be empty when interrupting.\n self.interrupt ? nok : onBlank, effects.attempt(listItemPrefixWhitespaceConstruct, endOfPrefix, otherPrefix));\n }\n\n /** @type {State} */\n function onBlank(code) {\n self.containerState.initialBlankLine = true;\n initialSize++;\n return endOfPrefix(code);\n }\n\n /** @type {State} */\n function otherPrefix(code) {\n if (markdownSpace(code)) {\n effects.enter(\"listItemPrefixWhitespace\");\n effects.consume(code);\n effects.exit(\"listItemPrefixWhitespace\");\n return endOfPrefix;\n }\n return nok(code);\n }\n\n /** @type {State} */\n function endOfPrefix(code) {\n self.containerState.size = initialSize + self.sliceSerialize(effects.exit(\"listItemPrefix\"), true).length;\n return ok(code);\n }\n}\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeListContinuation(effects, ok, nok) {\n const self = this;\n self.containerState._closeFlow = undefined;\n return effects.check(blankLine, onBlank, notBlank);\n\n /** @type {State} */\n function onBlank(code) {\n self.containerState.furtherBlankLines = self.containerState.furtherBlankLines || self.containerState.initialBlankLine;\n\n // We have a blank line.\n // Still, try to consume at most the items size.\n return factorySpace(effects, ok, \"listItemIndent\", self.containerState.size + 1)(code);\n }\n\n /** @type {State} */\n function notBlank(code) {\n if (self.containerState.furtherBlankLines || !markdownSpace(code)) {\n self.containerState.furtherBlankLines = undefined;\n self.containerState.initialBlankLine = undefined;\n return notInCurrentItem(code);\n }\n self.containerState.furtherBlankLines = undefined;\n self.containerState.initialBlankLine = undefined;\n return effects.attempt(indentConstruct, ok, notInCurrentItem)(code);\n }\n\n /** @type {State} */\n function notInCurrentItem(code) {\n // While we do continue, we signal that the flow should be closed.\n self.containerState._closeFlow = true;\n // As we\u2019re closing flow, we\u2019re no longer interrupting.\n self.interrupt = undefined;\n // Always populated by defaults.\n\n return factorySpace(effects, effects.attempt(list, ok, nok), \"linePrefix\", self.parser.constructs.disable.null.includes('codeIndented') ? undefined : 4)(code);\n }\n}\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeIndent(effects, ok, nok) {\n const self = this;\n return factorySpace(effects, afterPrefix, \"listItemIndent\", self.containerState.size + 1);\n\n /** @type {State} */\n function afterPrefix(code) {\n const tail = self.events[self.events.length - 1];\n return tail && tail[1].type === \"listItemIndent\" && tail[2].sliceSerialize(tail[1], true).length === self.containerState.size ? ok(code) : nok(code);\n }\n}\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Exiter}\n */\nfunction tokenizeListEnd(effects) {\n effects.exit(this.containerState.type);\n}\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeListItemPrefixWhitespace(effects, ok, nok) {\n const self = this;\n\n // Always populated by defaults.\n\n return factorySpace(effects, afterPrefix, \"listItemPrefixWhitespace\", self.parser.constructs.disable.null.includes('codeIndented') ? undefined : 4 + 1);\n\n /** @type {State} */\n function afterPrefix(code) {\n const tail = self.events[self.events.length - 1];\n return !markdownSpace(code) && tail && tail[1].type === \"listItemPrefixWhitespace\" ? ok(code) : nok(code);\n }\n}", "/**\n * @import {\n * Code,\n * Construct,\n * Resolver,\n * State,\n * TokenizeContext,\n * Tokenizer\n * } from 'micromark-util-types'\n */\n\nimport { factorySpace } from 'micromark-factory-space';\nimport { markdownLineEnding, markdownSpace } from 'micromark-util-character';\n/** @type {Construct} */\nexport const setextUnderline = {\n name: 'setextUnderline',\n resolveTo: resolveToSetextUnderline,\n tokenize: tokenizeSetextUnderline\n};\n\n/** @type {Resolver} */\nfunction resolveToSetextUnderline(events, context) {\n // To do: resolve like `markdown-rs`.\n let index = events.length;\n /** @type {number | undefined} */\n let content;\n /** @type {number | undefined} */\n let text;\n /** @type {number | undefined} */\n let definition;\n\n // Find the opening of the content.\n // It\u2019ll always exist: we don\u2019t tokenize if it isn\u2019t there.\n while (index--) {\n if (events[index][0] === 'enter') {\n if (events[index][1].type === \"content\") {\n content = index;\n break;\n }\n if (events[index][1].type === \"paragraph\") {\n text = index;\n }\n }\n // Exit\n else {\n if (events[index][1].type === \"content\") {\n // Remove the content end (if needed we\u2019ll add it later)\n events.splice(index, 1);\n }\n if (!definition && events[index][1].type === \"definition\") {\n definition = index;\n }\n }\n }\n const heading = {\n type: \"setextHeading\",\n start: {\n ...events[content][1].start\n },\n end: {\n ...events[events.length - 1][1].end\n }\n };\n\n // Change the paragraph to setext heading text.\n events[text][1].type = \"setextHeadingText\";\n\n // If we have definitions in the content, we\u2019ll keep on having content,\n // but we need move it.\n if (definition) {\n events.splice(text, 0, ['enter', heading, context]);\n events.splice(definition + 1, 0, ['exit', events[content][1], context]);\n events[content][1].end = {\n ...events[definition][1].end\n };\n } else {\n events[content][1] = heading;\n }\n\n // Add the heading exit at the end.\n events.push(['exit', heading, context]);\n return events;\n}\n\n/**\n * @this {TokenizeContext}\n * Context.\n * @type {Tokenizer}\n */\nfunction tokenizeSetextUnderline(effects, ok, nok) {\n const self = this;\n /** @type {NonNullable} */\n let marker;\n return start;\n\n /**\n * At start of heading (setext) underline.\n *\n * ```markdown\n * | aa\n * > | ==\n * ^\n * ```\n *\n * @type {State}\n */\n function start(code) {\n let index = self.events.length;\n /** @type {boolean | undefined} */\n let paragraph;\n // Find an opening.\n while (index--) {\n // Skip enter/exit of line ending, line prefix, and content.\n // We can now either have a definition or a paragraph.\n if (self.events[index][1].type !== \"lineEnding\" && self.events[index][1].type !== \"linePrefix\" && self.events[index][1].type !== \"content\") {\n paragraph = self.events[index][1].type === \"paragraph\";\n break;\n }\n }\n\n // To do: handle lazy/pierce like `markdown-rs`.\n // To do: parse indent like `markdown-rs`.\n if (!self.parser.lazy[self.now().line] && (self.interrupt || paragraph)) {\n effects.enter(\"setextHeadingLine\");\n marker = code;\n return before(code);\n }\n return nok(code);\n }\n\n /**\n * After optional whitespace, at `-` or `=`.\n *\n * ```markdown\n * | aa\n * > | ==\n * ^\n * ```\n *\n * @type {State}\n */\n function before(code) {\n effects.enter(\"setextHeadingLineSequence\");\n return inside(code);\n }\n\n /**\n * In sequence.\n *\n * ```markdown\n * | aa\n * > | ==\n * ^\n * ```\n *\n * @type {State}\n */\n function inside(code) {\n if (code === marker) {\n effects.consume(code);\n return inside;\n }\n effects.exit(\"setextHeadingLineSequence\");\n return markdownSpace(code) ? factorySpace(effects, after, \"lineSuffix\")(code) : after(code);\n }\n\n /**\n * After sequence, after optional whitespace.\n *\n * ```markdown\n * | aa\n * > | ==\n * ^\n * ```\n *\n * @type {State}\n */\n function after(code) {\n if (code === null || markdownLineEnding(code)) {\n effects.exit(\"setextHeadingLine\");\n return ok(code);\n }\n return nok(code);\n }\n}", "/**\n * @import {\n * InitialConstruct,\n * Initializer,\n * State,\n * TokenizeContext\n * } from 'micromark-util-types'\n */\n\nimport { blankLine, content } from 'micromark-core-commonmark';\nimport { factorySpace } from 'micromark-factory-space';\nimport { markdownLineEnding } from 'micromark-util-character';\n/** @type {InitialConstruct} */\nexport const flow = {\n tokenize: initializeFlow\n};\n\n/**\n * @this {TokenizeContext}\n * Self.\n * @type {Initializer}\n * Initializer.\n */\nfunction initializeFlow(effects) {\n const self = this;\n const initial = effects.attempt(\n // Try to parse a blank line.\n blankLine, atBlankEnding,\n // Try to parse initial flow (essentially, only code).\n effects.attempt(this.parser.constructs.flowInitial, afterConstruct, factorySpace(effects, effects.attempt(this.parser.constructs.flow, afterConstruct, effects.attempt(content, afterConstruct)), \"linePrefix\")));\n return initial;\n\n /** @type {State} */\n function atBlankEnding(code) {\n if (code === null) {\n effects.consume(code);\n return;\n }\n effects.enter(\"lineEndingBlank\");\n effects.consume(code);\n effects.exit(\"lineEndingBlank\");\n self.currentConstruct = undefined;\n return initial;\n }\n\n /** @type {State} */\n function afterConstruct(code) {\n if (code === null) {\n effects.consume(code);\n return;\n }\n effects.enter(\"lineEnding\");\n effects.consume(code);\n effects.exit(\"lineEnding\");\n self.currentConstruct = undefined;\n return initial;\n }\n}", "/**\n * @import {\n * Code,\n * InitialConstruct,\n * Initializer,\n * Resolver,\n * State,\n * TokenizeContext\n * } from 'micromark-util-types'\n */\n\nexport const resolver = {\n resolveAll: createResolver()\n};\nexport const string = initializeFactory('string');\nexport const text = initializeFactory('text');\n\n/**\n * @param {'string' | 'text'} field\n * Field.\n * @returns {InitialConstruct}\n * Construct.\n */\nfunction initializeFactory(field) {\n return {\n resolveAll: createResolver(field === 'text' ? resolveAllLineSuffixes : undefined),\n tokenize: initializeText\n };\n\n /**\n * @this {TokenizeContext}\n * Context.\n * @type {Initializer}\n */\n function initializeText(effects) {\n const self = this;\n const constructs = this.parser.constructs[field];\n const text = effects.attempt(constructs, start, notText);\n return start;\n\n /** @type {State} */\n function start(code) {\n return atBreak(code) ? text(code) : notText(code);\n }\n\n /** @type {State} */\n function notText(code) {\n if (code === null) {\n effects.consume(code);\n return;\n }\n effects.enter(\"data\");\n effects.consume(code);\n return data;\n }\n\n /** @type {State} */\n function data(code) {\n if (atBreak(code)) {\n effects.exit(\"data\");\n return text(code);\n }\n\n // Data.\n effects.consume(code);\n return data;\n }\n\n /**\n * @param {Code} code\n * Code.\n * @returns {boolean}\n * Whether the code is a break.\n */\n function atBreak(code) {\n if (code === null) {\n return true;\n }\n const list = constructs[code];\n let index = -1;\n if (list) {\n // Always populated by defaults.\n\n while (++index < list.length) {\n const item = list[index];\n if (!item.previous || item.previous.call(self, self.previous)) {\n return true;\n }\n }\n }\n return false;\n }\n }\n}\n\n/**\n * @param {Resolver | undefined} [extraResolver]\n * Resolver.\n * @returns {Resolver}\n * Resolver.\n */\nfunction createResolver(extraResolver) {\n return resolveAllText;\n\n /** @type {Resolver} */\n function resolveAllText(events, context) {\n let index = -1;\n /** @type {number | undefined} */\n let enter;\n\n // A rather boring computation (to merge adjacent `data` events) which\n // improves mm performance by 29%.\n while (++index <= events.length) {\n if (enter === undefined) {\n if (events[index] && events[index][1].type === \"data\") {\n enter = index;\n index++;\n }\n } else if (!events[index] || events[index][1].type !== \"data\") {\n // Don\u2019t do anything if there is one data token.\n if (index !== enter + 2) {\n events[enter][1].end = events[index - 1][1].end;\n events.splice(enter + 2, index - enter - 2);\n index = enter + 2;\n }\n enter = undefined;\n }\n }\n return extraResolver ? extraResolver(events, context) : events;\n }\n}\n\n/**\n * A rather ugly set of instructions which again looks at chunks in the input\n * stream.\n * The reason to do this here is that it is *much* faster to parse in reverse.\n * And that we can\u2019t hook into `null` to split the line suffix before an EOF.\n * To do: figure out if we can make this into a clean utility, or even in core.\n * As it will be useful for GFMs literal autolink extension (and maybe even\n * tables?)\n *\n * @type {Resolver}\n */\nfunction resolveAllLineSuffixes(events, context) {\n let eventIndex = 0; // Skip first.\n\n while (++eventIndex <= events.length) {\n if ((eventIndex === events.length || events[eventIndex][1].type === \"lineEnding\") && events[eventIndex - 1][1].type === \"data\") {\n const data = events[eventIndex - 1][1];\n const chunks = context.sliceStream(data);\n let index = chunks.length;\n let bufferIndex = -1;\n let size = 0;\n /** @type {boolean | undefined} */\n let tabs;\n while (index--) {\n const chunk = chunks[index];\n if (typeof chunk === 'string') {\n bufferIndex = chunk.length;\n while (chunk.charCodeAt(bufferIndex - 1) === 32) {\n size++;\n bufferIndex--;\n }\n if (bufferIndex) break;\n bufferIndex = -1;\n }\n // Number\n else if (chunk === -2) {\n tabs = true;\n size++;\n } else if (chunk === -1) {\n // Empty\n } else {\n // Replacement character, exit.\n index++;\n break;\n }\n }\n\n // Allow final trailing whitespace.\n if (context._contentTypeTextTrailing && eventIndex === events.length) {\n size = 0;\n }\n if (size) {\n const token = {\n type: eventIndex === events.length || tabs || size < 2 ? \"lineSuffix\" : \"hardBreakTrailing\",\n start: {\n _bufferIndex: index ? bufferIndex : data.start._bufferIndex + bufferIndex,\n _index: data.start._index + index,\n line: data.end.line,\n column: data.end.column - size,\n offset: data.end.offset - size\n },\n end: {\n ...data.end\n }\n };\n data.end = {\n ...token.start\n };\n if (data.start.offset === data.end.offset) {\n Object.assign(data, token);\n } else {\n events.splice(eventIndex, 0, ['enter', token, context], ['exit', token, context]);\n eventIndex += 2;\n }\n }\n eventIndex++;\n }\n }\n return events;\n}", "/**\n * @import {Extension} from 'micromark-util-types'\n */\n\nimport { attention, autolink, blockQuote, characterEscape, characterReference, codeFenced, codeIndented, codeText, definition, hardBreakEscape, headingAtx, htmlFlow, htmlText, labelEnd, labelStartImage, labelStartLink, lineEnding, list, setextUnderline, thematicBreak } from 'micromark-core-commonmark';\nimport { resolver as resolveText } from './initialize/text.js';\n\n/** @satisfies {Extension['document']} */\nexport const document = {\n [42]: list,\n [43]: list,\n [45]: list,\n [48]: list,\n [49]: list,\n [50]: list,\n [51]: list,\n [52]: list,\n [53]: list,\n [54]: list,\n [55]: list,\n [56]: list,\n [57]: list,\n [62]: blockQuote\n};\n\n/** @satisfies {Extension['contentInitial']} */\nexport const contentInitial = {\n [91]: definition\n};\n\n/** @satisfies {Extension['flowInitial']} */\nexport const flowInitial = {\n [-2]: codeIndented,\n [-1]: codeIndented,\n [32]: codeIndented\n};\n\n/** @satisfies {Extension['flow']} */\nexport const flow = {\n [35]: headingAtx,\n [42]: thematicBreak,\n [45]: [setextUnderline, thematicBreak],\n [60]: htmlFlow,\n [61]: setextUnderline,\n [95]: thematicBreak,\n [96]: codeFenced,\n [126]: codeFenced\n};\n\n/** @satisfies {Extension['string']} */\nexport const string = {\n [38]: characterReference,\n [92]: characterEscape\n};\n\n/** @satisfies {Extension['text']} */\nexport const text = {\n [-5]: lineEnding,\n [-4]: lineEnding,\n [-3]: lineEnding,\n [33]: labelStartImage,\n [38]: characterReference,\n [42]: attention,\n [60]: [autolink, htmlText],\n [91]: labelStartLink,\n [92]: [hardBreakEscape, characterEscape],\n [93]: labelEnd,\n [95]: attention,\n [96]: codeText\n};\n\n/** @satisfies {Extension['insideSpan']} */\nexport const insideSpan = {\n null: [attention, resolveText]\n};\n\n/** @satisfies {Extension['attentionMarkers']} */\nexport const attentionMarkers = {\n null: [42, 95]\n};\n\n/** @satisfies {Extension['disable']} */\nexport const disable = {\n null: []\n};", "/**\n * @import {\n * Chunk,\n * Code,\n * ConstructRecord,\n * Construct,\n * Effects,\n * InitialConstruct,\n * ParseContext,\n * Point,\n * State,\n * TokenizeContext,\n * Token\n * } from 'micromark-util-types'\n */\n\n/**\n * @callback Restore\n * Restore the state.\n * @returns {undefined}\n * Nothing.\n *\n * @typedef Info\n * Info.\n * @property {Restore} restore\n * Restore.\n * @property {number} from\n * From.\n *\n * @callback ReturnHandle\n * Handle a successful run.\n * @param {Construct} construct\n * Construct.\n * @param {Info} info\n * Info.\n * @returns {undefined}\n * Nothing.\n */\n\nimport { markdownLineEnding } from 'micromark-util-character';\nimport { push, splice } from 'micromark-util-chunked';\nimport { resolveAll } from 'micromark-util-resolve-all';\n/**\n * Create a tokenizer.\n * Tokenizers deal with one type of data (e.g., containers, flow, text).\n * The parser is the object dealing with it all.\n * `initialize` works like other constructs, except that only its `tokenize`\n * function is used, in which case it doesn\u2019t receive an `ok` or `nok`.\n * `from` can be given to set the point before the first character, although\n * when further lines are indented, they must be set with `defineSkip`.\n *\n * @param {ParseContext} parser\n * Parser.\n * @param {InitialConstruct} initialize\n * Construct.\n * @param {Omit | undefined} [from]\n * Point (optional).\n * @returns {TokenizeContext}\n * Context.\n */\nexport function createTokenizer(parser, initialize, from) {\n /** @type {Point} */\n let point = {\n _bufferIndex: -1,\n _index: 0,\n line: from && from.line || 1,\n column: from && from.column || 1,\n offset: from && from.offset || 0\n };\n /** @type {Record} */\n const columnStart = {};\n /** @type {Array} */\n const resolveAllConstructs = [];\n /** @type {Array} */\n let chunks = [];\n /** @type {Array} */\n let stack = [];\n /** @type {boolean | undefined} */\n let consumed = true;\n\n /**\n * Tools used for tokenizing.\n *\n * @type {Effects}\n */\n const effects = {\n attempt: constructFactory(onsuccessfulconstruct),\n check: constructFactory(onsuccessfulcheck),\n consume,\n enter,\n exit,\n interrupt: constructFactory(onsuccessfulcheck, {\n interrupt: true\n })\n };\n\n /**\n * State and tools for resolving and serializing.\n *\n * @type {TokenizeContext}\n */\n const context = {\n code: null,\n containerState: {},\n defineSkip,\n events: [],\n now,\n parser,\n previous: null,\n sliceSerialize,\n sliceStream,\n write\n };\n\n /**\n * The state function.\n *\n * @type {State | undefined}\n */\n let state = initialize.tokenize.call(context, effects);\n\n /**\n * Track which character we expect to be consumed, to catch bugs.\n *\n * @type {Code}\n */\n let expectedCode;\n if (initialize.resolveAll) {\n resolveAllConstructs.push(initialize);\n }\n return context;\n\n /** @type {TokenizeContext['write']} */\n function write(slice) {\n chunks = push(chunks, slice);\n main();\n\n // Exit if we\u2019re not done, resolve might change stuff.\n if (chunks[chunks.length - 1] !== null) {\n return [];\n }\n addResult(initialize, 0);\n\n // Otherwise, resolve, and exit.\n context.events = resolveAll(resolveAllConstructs, context.events, context);\n return context.events;\n }\n\n //\n // Tools.\n //\n\n /** @type {TokenizeContext['sliceSerialize']} */\n function sliceSerialize(token, expandTabs) {\n return serializeChunks(sliceStream(token), expandTabs);\n }\n\n /** @type {TokenizeContext['sliceStream']} */\n function sliceStream(token) {\n return sliceChunks(chunks, token);\n }\n\n /** @type {TokenizeContext['now']} */\n function now() {\n // This is a hot path, so we clone manually instead of `Object.assign({}, point)`\n const {\n _bufferIndex,\n _index,\n line,\n column,\n offset\n } = point;\n return {\n _bufferIndex,\n _index,\n line,\n column,\n offset\n };\n }\n\n /** @type {TokenizeContext['defineSkip']} */\n function defineSkip(value) {\n columnStart[value.line] = value.column;\n accountForPotentialSkip();\n }\n\n //\n // State management.\n //\n\n /**\n * Main loop (note that `_index` and `_bufferIndex` in `point` are modified by\n * `consume`).\n * Here is where we walk through the chunks, which either include strings of\n * several characters, or numerical character codes.\n * The reason to do this in a loop instead of a call is so the stack can\n * drain.\n *\n * @returns {undefined}\n * Nothing.\n */\n function main() {\n /** @type {number} */\n let chunkIndex;\n while (point._index < chunks.length) {\n const chunk = chunks[point._index];\n\n // If we\u2019re in a buffer chunk, loop through it.\n if (typeof chunk === 'string') {\n chunkIndex = point._index;\n if (point._bufferIndex < 0) {\n point._bufferIndex = 0;\n }\n while (point._index === chunkIndex && point._bufferIndex < chunk.length) {\n go(chunk.charCodeAt(point._bufferIndex));\n }\n } else {\n go(chunk);\n }\n }\n }\n\n /**\n * Deal with one code.\n *\n * @param {Code} code\n * Code.\n * @returns {undefined}\n * Nothing.\n */\n function go(code) {\n consumed = undefined;\n expectedCode = code;\n state = state(code);\n }\n\n /** @type {Effects['consume']} */\n function consume(code) {\n if (markdownLineEnding(code)) {\n point.line++;\n point.column = 1;\n point.offset += code === -3 ? 2 : 1;\n accountForPotentialSkip();\n } else if (code !== -1) {\n point.column++;\n point.offset++;\n }\n\n // Not in a string chunk.\n if (point._bufferIndex < 0) {\n point._index++;\n } else {\n point._bufferIndex++;\n\n // At end of string chunk.\n if (point._bufferIndex ===\n // Points w/ non-negative `_bufferIndex` reference\n // strings.\n /** @type {string} */\n chunks[point._index].length) {\n point._bufferIndex = -1;\n point._index++;\n }\n }\n\n // Expose the previous character.\n context.previous = code;\n\n // Mark as consumed.\n consumed = true;\n }\n\n /** @type {Effects['enter']} */\n function enter(type, fields) {\n /** @type {Token} */\n // @ts-expect-error Patch instead of assign required fields to help GC.\n const token = fields || {};\n token.type = type;\n token.start = now();\n context.events.push(['enter', token, context]);\n stack.push(token);\n return token;\n }\n\n /** @type {Effects['exit']} */\n function exit(type) {\n const token = stack.pop();\n token.end = now();\n context.events.push(['exit', token, context]);\n return token;\n }\n\n /**\n * Use results.\n *\n * @type {ReturnHandle}\n */\n function onsuccessfulconstruct(construct, info) {\n addResult(construct, info.from);\n }\n\n /**\n * Discard results.\n *\n * @type {ReturnHandle}\n */\n function onsuccessfulcheck(_, info) {\n info.restore();\n }\n\n /**\n * Factory to attempt/check/interrupt.\n *\n * @param {ReturnHandle} onreturn\n * Callback.\n * @param {{interrupt?: boolean | undefined} | undefined} [fields]\n * Fields.\n */\n function constructFactory(onreturn, fields) {\n return hook;\n\n /**\n * Handle either an object mapping codes to constructs, a list of\n * constructs, or a single construct.\n *\n * @param {Array | ConstructRecord | Construct} constructs\n * Constructs.\n * @param {State} returnState\n * State.\n * @param {State | undefined} [bogusState]\n * State.\n * @returns {State}\n * State.\n */\n function hook(constructs, returnState, bogusState) {\n /** @type {ReadonlyArray} */\n let listOfConstructs;\n /** @type {number} */\n let constructIndex;\n /** @type {Construct} */\n let currentConstruct;\n /** @type {Info} */\n let info;\n return Array.isArray(constructs) ? /* c8 ignore next 1 */\n handleListOfConstructs(constructs) : 'tokenize' in constructs ?\n // Looks like a construct.\n handleListOfConstructs([(/** @type {Construct} */constructs)]) : handleMapOfConstructs(constructs);\n\n /**\n * Handle a list of construct.\n *\n * @param {ConstructRecord} map\n * Constructs.\n * @returns {State}\n * State.\n */\n function handleMapOfConstructs(map) {\n return start;\n\n /** @type {State} */\n function start(code) {\n const left = code !== null && map[code];\n const all = code !== null && map.null;\n const list = [\n // To do: add more extension tests.\n /* c8 ignore next 2 */\n ...(Array.isArray(left) ? left : left ? [left] : []), ...(Array.isArray(all) ? all : all ? [all] : [])];\n return handleListOfConstructs(list)(code);\n }\n }\n\n /**\n * Handle a list of construct.\n *\n * @param {ReadonlyArray} list\n * Constructs.\n * @returns {State}\n * State.\n */\n function handleListOfConstructs(list) {\n listOfConstructs = list;\n constructIndex = 0;\n if (list.length === 0) {\n return bogusState;\n }\n return handleConstruct(list[constructIndex]);\n }\n\n /**\n * Handle a single construct.\n *\n * @param {Construct} construct\n * Construct.\n * @returns {State}\n * State.\n */\n function handleConstruct(construct) {\n return start;\n\n /** @type {State} */\n function start(code) {\n // To do: not needed to store if there is no bogus state, probably?\n // Currently doesn\u2019t work because `inspect` in document does a check\n // w/o a bogus, which doesn\u2019t make sense. But it does seem to help perf\n // by not storing.\n info = store();\n currentConstruct = construct;\n if (!construct.partial) {\n context.currentConstruct = construct;\n }\n\n // Always populated by defaults.\n\n if (construct.name && context.parser.constructs.disable.null.includes(construct.name)) {\n return nok(code);\n }\n return construct.tokenize.call(\n // If we do have fields, create an object w/ `context` as its\n // prototype.\n // This allows a \u201Clive binding\u201D, which is needed for `interrupt`.\n fields ? Object.assign(Object.create(context), fields) : context, effects, ok, nok)(code);\n }\n }\n\n /** @type {State} */\n function ok(code) {\n consumed = true;\n onreturn(currentConstruct, info);\n return returnState;\n }\n\n /** @type {State} */\n function nok(code) {\n consumed = true;\n info.restore();\n if (++constructIndex < listOfConstructs.length) {\n return handleConstruct(listOfConstructs[constructIndex]);\n }\n return bogusState;\n }\n }\n }\n\n /**\n * @param {Construct} construct\n * Construct.\n * @param {number} from\n * From.\n * @returns {undefined}\n * Nothing.\n */\n function addResult(construct, from) {\n if (construct.resolveAll && !resolveAllConstructs.includes(construct)) {\n resolveAllConstructs.push(construct);\n }\n if (construct.resolve) {\n splice(context.events, from, context.events.length - from, construct.resolve(context.events.slice(from), context));\n }\n if (construct.resolveTo) {\n context.events = construct.resolveTo(context.events, context);\n }\n }\n\n /**\n * Store state.\n *\n * @returns {Info}\n * Info.\n */\n function store() {\n const startPoint = now();\n const startPrevious = context.previous;\n const startCurrentConstruct = context.currentConstruct;\n const startEventsIndex = context.events.length;\n const startStack = Array.from(stack);\n return {\n from: startEventsIndex,\n restore\n };\n\n /**\n * Restore state.\n *\n * @returns {undefined}\n * Nothing.\n */\n function restore() {\n point = startPoint;\n context.previous = startPrevious;\n context.currentConstruct = startCurrentConstruct;\n context.events.length = startEventsIndex;\n stack = startStack;\n accountForPotentialSkip();\n }\n }\n\n /**\n * Move the current point a bit forward in the line when it\u2019s on a column\n * skip.\n *\n * @returns {undefined}\n * Nothing.\n */\n function accountForPotentialSkip() {\n if (point.line in columnStart && point.column < 2) {\n point.column = columnStart[point.line];\n point.offset += columnStart[point.line] - 1;\n }\n }\n}\n\n/**\n * Get the chunks from a slice of chunks in the range of a token.\n *\n * @param {ReadonlyArray} chunks\n * Chunks.\n * @param {Pick} token\n * Token.\n * @returns {Array}\n * Chunks.\n */\nfunction sliceChunks(chunks, token) {\n const startIndex = token.start._index;\n const startBufferIndex = token.start._bufferIndex;\n const endIndex = token.end._index;\n const endBufferIndex = token.end._bufferIndex;\n /** @type {Array} */\n let view;\n if (startIndex === endIndex) {\n // @ts-expect-error `_bufferIndex` is used on string chunks.\n view = [chunks[startIndex].slice(startBufferIndex, endBufferIndex)];\n } else {\n view = chunks.slice(startIndex, endIndex);\n if (startBufferIndex > -1) {\n const head = view[0];\n if (typeof head === 'string') {\n view[0] = head.slice(startBufferIndex);\n /* c8 ignore next 4 -- used to be used, no longer */\n } else {\n view.shift();\n }\n }\n if (endBufferIndex > 0) {\n // @ts-expect-error `_bufferIndex` is used on string chunks.\n view.push(chunks[endIndex].slice(0, endBufferIndex));\n }\n }\n return view;\n}\n\n/**\n * Get the string value of a slice of chunks.\n *\n * @param {ReadonlyArray} chunks\n * Chunks.\n * @param {boolean | undefined} [expandTabs=false]\n * Whether to expand tabs (default: `false`).\n * @returns {string}\n * Result.\n */\nfunction serializeChunks(chunks, expandTabs) {\n let index = -1;\n /** @type {Array} */\n const result = [];\n /** @type {boolean | undefined} */\n let atTab;\n while (++index < chunks.length) {\n const chunk = chunks[index];\n /** @type {string} */\n let value;\n if (typeof chunk === 'string') {\n value = chunk;\n } else switch (chunk) {\n case -5:\n {\n value = \"\\r\";\n break;\n }\n case -4:\n {\n value = \"\\n\";\n break;\n }\n case -3:\n {\n value = \"\\r\" + \"\\n\";\n break;\n }\n case -2:\n {\n value = expandTabs ? \" \" : \"\\t\";\n break;\n }\n case -1:\n {\n if (!expandTabs && atTab) continue;\n value = \" \";\n break;\n }\n default:\n {\n // Currently only replacement character.\n value = String.fromCharCode(chunk);\n }\n }\n atTab = chunk === -2;\n result.push(value);\n }\n return result.join('');\n}", "/**\n * @import {\n * Create,\n * FullNormalizedExtension,\n * InitialConstruct,\n * ParseContext,\n * ParseOptions\n * } from 'micromark-util-types'\n */\n\nimport { combineExtensions } from 'micromark-util-combine-extensions';\nimport { content } from './initialize/content.js';\nimport { document } from './initialize/document.js';\nimport { flow } from './initialize/flow.js';\nimport { string, text } from './initialize/text.js';\nimport * as defaultConstructs from './constructs.js';\nimport { createTokenizer } from './create-tokenizer.js';\n\n/**\n * @param {ParseOptions | null | undefined} [options]\n * Configuration (optional).\n * @returns {ParseContext}\n * Parser.\n */\nexport function parse(options) {\n const settings = options || {};\n const constructs = /** @type {FullNormalizedExtension} */\n combineExtensions([defaultConstructs, ...(settings.extensions || [])]);\n\n /** @type {ParseContext} */\n const parser = {\n constructs,\n content: create(content),\n defined: [],\n document: create(document),\n flow: create(flow),\n lazy: {},\n string: create(string),\n text: create(text)\n };\n return parser;\n\n /**\n * @param {InitialConstruct} initial\n * Construct to start with.\n * @returns {Create}\n * Create a tokenizer.\n */\n function create(initial) {\n return creator;\n /** @type {Create} */\n function creator(from) {\n return createTokenizer(parser, initial, from);\n }\n }\n}", "/**\n * @import {Event} from 'micromark-util-types'\n */\n\nimport { subtokenize } from 'micromark-util-subtokenize';\n\n/**\n * @param {Array} events\n * Events.\n * @returns {Array}\n * Events.\n */\nexport function postprocess(events) {\n while (!subtokenize(events)) {\n // Empty\n }\n return events;\n}", "/**\n * @import {Chunk, Code, Encoding, Value} from 'micromark-util-types'\n */\n\n/**\n * @callback Preprocessor\n * Preprocess a value.\n * @param {Value} value\n * Value.\n * @param {Encoding | null | undefined} [encoding]\n * Encoding when `value` is a typed array (optional).\n * @param {boolean | null | undefined} [end=false]\n * Whether this is the last chunk (default: `false`).\n * @returns {Array}\n * Chunks.\n */\n\nconst search = /[\\0\\t\\n\\r]/g;\n\n/**\n * @returns {Preprocessor}\n * Preprocess a value.\n */\nexport function preprocess() {\n let column = 1;\n let buffer = '';\n /** @type {boolean | undefined} */\n let start = true;\n /** @type {boolean | undefined} */\n let atCarriageReturn;\n return preprocessor;\n\n /** @type {Preprocessor} */\n // eslint-disable-next-line complexity\n function preprocessor(value, encoding, end) {\n /** @type {Array} */\n const chunks = [];\n /** @type {RegExpMatchArray | null} */\n let match;\n /** @type {number} */\n let next;\n /** @type {number} */\n let startPosition;\n /** @type {number} */\n let endPosition;\n /** @type {Code} */\n let code;\n value = buffer + (typeof value === 'string' ? value.toString() : new TextDecoder(encoding || undefined).decode(value));\n startPosition = 0;\n buffer = '';\n if (start) {\n // To do: `markdown-rs` actually parses BOMs (byte order mark).\n if (value.charCodeAt(0) === 65279) {\n startPosition++;\n }\n start = undefined;\n }\n while (startPosition < value.length) {\n search.lastIndex = startPosition;\n match = search.exec(value);\n endPosition = match && match.index !== undefined ? match.index : value.length;\n code = value.charCodeAt(endPosition);\n if (!match) {\n buffer = value.slice(startPosition);\n break;\n }\n if (code === 10 && startPosition === endPosition && atCarriageReturn) {\n chunks.push(-3);\n atCarriageReturn = undefined;\n } else {\n if (atCarriageReturn) {\n chunks.push(-5);\n atCarriageReturn = undefined;\n }\n if (startPosition < endPosition) {\n chunks.push(value.slice(startPosition, endPosition));\n column += endPosition - startPosition;\n }\n switch (code) {\n case 0:\n {\n chunks.push(65533);\n column++;\n break;\n }\n case 9:\n {\n next = Math.ceil(column / 4) * 4;\n chunks.push(-2);\n while (column++ < next) chunks.push(-1);\n break;\n }\n case 10:\n {\n chunks.push(-4);\n column = 1;\n break;\n }\n default:\n {\n atCarriageReturn = true;\n column = 1;\n }\n }\n }\n startPosition = endPosition + 1;\n }\n if (end) {\n if (atCarriageReturn) chunks.push(-5);\n if (buffer) chunks.push(buffer);\n chunks.push(null);\n }\n return chunks;\n }\n}", "import { decodeNamedCharacterReference } from 'decode-named-character-reference';\nimport { decodeNumericCharacterReference } from 'micromark-util-decode-numeric-character-reference';\nconst characterEscapeOrReference = /\\\\([!-/:-@[-`{-~])|&(#(?:\\d{1,7}|x[\\da-f]{1,6})|[\\da-z]{1,31});/gi;\n\n/**\n * Decode markdown strings (which occur in places such as fenced code info\n * strings, destinations, labels, and titles).\n *\n * The \u201Cstring\u201D content type allows character escapes and -references.\n * This decodes those.\n *\n * @param {string} value\n * Value to decode.\n * @returns {string}\n * Decoded value.\n */\nexport function decodeString(value) {\n return value.replace(characterEscapeOrReference, decode);\n}\n\n/**\n * @param {string} $0\n * Match.\n * @param {string} $1\n * Character escape.\n * @param {string} $2\n * Character reference.\n * @returns {string}\n * Decoded value\n */\nfunction decode($0, $1, $2) {\n if ($1) {\n // Escape.\n return $1;\n }\n\n // Reference.\n const head = $2.charCodeAt(0);\n if (head === 35) {\n const head = $2.charCodeAt(1);\n const hex = head === 120 || head === 88;\n return decodeNumericCharacterReference($2.slice(hex ? 2 : 1), hex ? 16 : 10);\n }\n return decodeNamedCharacterReference($2) || $0;\n}", "/**\n * @import {\n * Break,\n * Blockquote,\n * Code,\n * Definition,\n * Emphasis,\n * Heading,\n * Html,\n * Image,\n * InlineCode,\n * Link,\n * ListItem,\n * List,\n * Nodes,\n * Paragraph,\n * PhrasingContent,\n * ReferenceType,\n * Root,\n * Strong,\n * Text,\n * ThematicBreak\n * } from 'mdast'\n * @import {\n * Encoding,\n * Event,\n * Token,\n * Value\n * } from 'micromark-util-types'\n * @import {Point} from 'unist'\n * @import {\n * CompileContext,\n * CompileData,\n * Config,\n * Extension,\n * Handle,\n * OnEnterError,\n * Options\n * } from './types.js'\n */\n\nimport { toString } from 'mdast-util-to-string';\nimport { parse, postprocess, preprocess } from 'micromark';\nimport { decodeNumericCharacterReference } from 'micromark-util-decode-numeric-character-reference';\nimport { decodeString } from 'micromark-util-decode-string';\nimport { normalizeIdentifier } from 'micromark-util-normalize-identifier';\nimport { decodeNamedCharacterReference } from 'decode-named-character-reference';\nimport { stringifyPosition } from 'unist-util-stringify-position';\nconst own = {}.hasOwnProperty;\n\n/**\n * Turn markdown into a syntax tree.\n *\n * @overload\n * @param {Value} value\n * @param {Encoding | null | undefined} [encoding]\n * @param {Options | null | undefined} [options]\n * @returns {Root}\n *\n * @overload\n * @param {Value} value\n * @param {Options | null | undefined} [options]\n * @returns {Root}\n *\n * @param {Value} value\n * Markdown to parse.\n * @param {Encoding | Options | null | undefined} [encoding]\n * Character encoding for when `value` is `Buffer`.\n * @param {Options | null | undefined} [options]\n * Configuration.\n * @returns {Root}\n * mdast tree.\n */\nexport function fromMarkdown(value, encoding, options) {\n if (encoding && typeof encoding === 'object') {\n options = encoding;\n encoding = undefined;\n }\n return compiler(options)(postprocess(parse(options).document().write(preprocess()(value, encoding, true))));\n}\n\n/**\n * Note this compiler only understand complete buffering, not streaming.\n *\n * @param {Options | null | undefined} [options]\n */\nfunction compiler(options) {\n /** @type {Config} */\n const config = {\n transforms: [],\n canContainEols: ['emphasis', 'fragment', 'heading', 'paragraph', 'strong'],\n enter: {\n autolink: opener(link),\n autolinkProtocol: onenterdata,\n autolinkEmail: onenterdata,\n atxHeading: opener(heading),\n blockQuote: opener(blockQuote),\n characterEscape: onenterdata,\n characterReference: onenterdata,\n codeFenced: opener(codeFlow),\n codeFencedFenceInfo: buffer,\n codeFencedFenceMeta: buffer,\n codeIndented: opener(codeFlow, buffer),\n codeText: opener(codeText, buffer),\n codeTextData: onenterdata,\n data: onenterdata,\n codeFlowValue: onenterdata,\n definition: opener(definition),\n definitionDestinationString: buffer,\n definitionLabelString: buffer,\n definitionTitleString: buffer,\n emphasis: opener(emphasis),\n hardBreakEscape: opener(hardBreak),\n hardBreakTrailing: opener(hardBreak),\n htmlFlow: opener(html, buffer),\n htmlFlowData: onenterdata,\n htmlText: opener(html, buffer),\n htmlTextData: onenterdata,\n image: opener(image),\n label: buffer,\n link: opener(link),\n listItem: opener(listItem),\n listItemValue: onenterlistitemvalue,\n listOrdered: opener(list, onenterlistordered),\n listUnordered: opener(list),\n paragraph: opener(paragraph),\n reference: onenterreference,\n referenceString: buffer,\n resourceDestinationString: buffer,\n resourceTitleString: buffer,\n setextHeading: opener(heading),\n strong: opener(strong),\n thematicBreak: opener(thematicBreak)\n },\n exit: {\n atxHeading: closer(),\n atxHeadingSequence: onexitatxheadingsequence,\n autolink: closer(),\n autolinkEmail: onexitautolinkemail,\n autolinkProtocol: onexitautolinkprotocol,\n blockQuote: closer(),\n characterEscapeValue: onexitdata,\n characterReferenceMarkerHexadecimal: onexitcharacterreferencemarker,\n characterReferenceMarkerNumeric: onexitcharacterreferencemarker,\n characterReferenceValue: onexitcharacterreferencevalue,\n characterReference: onexitcharacterreference,\n codeFenced: closer(onexitcodefenced),\n codeFencedFence: onexitcodefencedfence,\n codeFencedFenceInfo: onexitcodefencedfenceinfo,\n codeFencedFenceMeta: onexitcodefencedfencemeta,\n codeFlowValue: onexitdata,\n codeIndented: closer(onexitcodeindented),\n codeText: closer(onexitcodetext),\n codeTextData: onexitdata,\n data: onexitdata,\n definition: closer(),\n definitionDestinationString: onexitdefinitiondestinationstring,\n definitionLabelString: onexitdefinitionlabelstring,\n definitionTitleString: onexitdefinitiontitlestring,\n emphasis: closer(),\n hardBreakEscape: closer(onexithardbreak),\n hardBreakTrailing: closer(onexithardbreak),\n htmlFlow: closer(onexithtmlflow),\n htmlFlowData: onexitdata,\n htmlText: closer(onexithtmltext),\n htmlTextData: onexitdata,\n image: closer(onexitimage),\n label: onexitlabel,\n labelText: onexitlabeltext,\n lineEnding: onexitlineending,\n link: closer(onexitlink),\n listItem: closer(),\n listOrdered: closer(),\n listUnordered: closer(),\n paragraph: closer(),\n referenceString: onexitreferencestring,\n resourceDestinationString: onexitresourcedestinationstring,\n resourceTitleString: onexitresourcetitlestring,\n resource: onexitresource,\n setextHeading: closer(onexitsetextheading),\n setextHeadingLineSequence: onexitsetextheadinglinesequence,\n setextHeadingText: onexitsetextheadingtext,\n strong: closer(),\n thematicBreak: closer()\n }\n };\n configure(config, (options || {}).mdastExtensions || []);\n\n /** @type {CompileData} */\n const data = {};\n return compile;\n\n /**\n * Turn micromark events into an mdast tree.\n *\n * @param {Array} events\n * Events.\n * @returns {Root}\n * mdast tree.\n */\n function compile(events) {\n /** @type {Root} */\n let tree = {\n type: 'root',\n children: []\n };\n /** @type {Omit} */\n const context = {\n stack: [tree],\n tokenStack: [],\n config,\n enter,\n exit,\n buffer,\n resume,\n data\n };\n /** @type {Array} */\n const listStack = [];\n let index = -1;\n while (++index < events.length) {\n // We preprocess lists to add `listItem` tokens, and to infer whether\n // items the list itself are spread out.\n if (events[index][1].type === \"listOrdered\" || events[index][1].type === \"listUnordered\") {\n if (events[index][0] === 'enter') {\n listStack.push(index);\n } else {\n const tail = listStack.pop();\n index = prepareList(events, tail, index);\n }\n }\n }\n index = -1;\n while (++index < events.length) {\n const handler = config[events[index][0]];\n if (own.call(handler, events[index][1].type)) {\n handler[events[index][1].type].call(Object.assign({\n sliceSerialize: events[index][2].sliceSerialize\n }, context), events[index][1]);\n }\n }\n\n // Handle tokens still being open.\n if (context.tokenStack.length > 0) {\n const tail = context.tokenStack[context.tokenStack.length - 1];\n const handler = tail[1] || defaultOnError;\n handler.call(context, undefined, tail[0]);\n }\n\n // Figure out `root` position.\n tree.position = {\n start: point(events.length > 0 ? events[0][1].start : {\n line: 1,\n column: 1,\n offset: 0\n }),\n end: point(events.length > 0 ? events[events.length - 2][1].end : {\n line: 1,\n column: 1,\n offset: 0\n })\n };\n\n // Call transforms.\n index = -1;\n while (++index < config.transforms.length) {\n tree = config.transforms[index](tree) || tree;\n }\n return tree;\n }\n\n /**\n * @param {Array} events\n * @param {number} start\n * @param {number} length\n * @returns {number}\n */\n function prepareList(events, start, length) {\n let index = start - 1;\n let containerBalance = -1;\n let listSpread = false;\n /** @type {Token | undefined} */\n let listItem;\n /** @type {number | undefined} */\n let lineIndex;\n /** @type {number | undefined} */\n let firstBlankLineIndex;\n /** @type {boolean | undefined} */\n let atMarker;\n while (++index <= length) {\n const event = events[index];\n switch (event[1].type) {\n case \"listUnordered\":\n case \"listOrdered\":\n case \"blockQuote\":\n {\n if (event[0] === 'enter') {\n containerBalance++;\n } else {\n containerBalance--;\n }\n atMarker = undefined;\n break;\n }\n case \"lineEndingBlank\":\n {\n if (event[0] === 'enter') {\n if (listItem && !atMarker && !containerBalance && !firstBlankLineIndex) {\n firstBlankLineIndex = index;\n }\n atMarker = undefined;\n }\n break;\n }\n case \"linePrefix\":\n case \"listItemValue\":\n case \"listItemMarker\":\n case \"listItemPrefix\":\n case \"listItemPrefixWhitespace\":\n {\n // Empty.\n\n break;\n }\n default:\n {\n atMarker = undefined;\n }\n }\n if (!containerBalance && event[0] === 'enter' && event[1].type === \"listItemPrefix\" || containerBalance === -1 && event[0] === 'exit' && (event[1].type === \"listUnordered\" || event[1].type === \"listOrdered\")) {\n if (listItem) {\n let tailIndex = index;\n lineIndex = undefined;\n while (tailIndex--) {\n const tailEvent = events[tailIndex];\n if (tailEvent[1].type === \"lineEnding\" || tailEvent[1].type === \"lineEndingBlank\") {\n if (tailEvent[0] === 'exit') continue;\n if (lineIndex) {\n events[lineIndex][1].type = \"lineEndingBlank\";\n listSpread = true;\n }\n tailEvent[1].type = \"lineEnding\";\n lineIndex = tailIndex;\n } else if (tailEvent[1].type === \"linePrefix\" || tailEvent[1].type === \"blockQuotePrefix\" || tailEvent[1].type === \"blockQuotePrefixWhitespace\" || tailEvent[1].type === \"blockQuoteMarker\" || tailEvent[1].type === \"listItemIndent\") {\n // Empty\n } else {\n break;\n }\n }\n if (firstBlankLineIndex && (!lineIndex || firstBlankLineIndex < lineIndex)) {\n listItem._spread = true;\n }\n\n // Fix position.\n listItem.end = Object.assign({}, lineIndex ? events[lineIndex][1].start : event[1].end);\n events.splice(lineIndex || index, 0, ['exit', listItem, event[2]]);\n index++;\n length++;\n }\n\n // Create a new list item.\n if (event[1].type === \"listItemPrefix\") {\n /** @type {Token} */\n const item = {\n type: 'listItem',\n _spread: false,\n start: Object.assign({}, event[1].start),\n // @ts-expect-error: we\u2019ll add `end` in a second.\n end: undefined\n };\n listItem = item;\n events.splice(index, 0, ['enter', item, event[2]]);\n index++;\n length++;\n firstBlankLineIndex = undefined;\n atMarker = true;\n }\n }\n }\n events[start][1]._spread = listSpread;\n return length;\n }\n\n /**\n * Create an opener handle.\n *\n * @param {(token: Token) => Nodes} create\n * Create a node.\n * @param {Handle | undefined} [and]\n * Optional function to also run.\n * @returns {Handle}\n * Handle.\n */\n function opener(create, and) {\n return open;\n\n /**\n * @this {CompileContext}\n * @param {Token} token\n * @returns {undefined}\n */\n function open(token) {\n enter.call(this, create(token), token);\n if (and) and.call(this, token);\n }\n }\n\n /**\n * @type {CompileContext['buffer']}\n */\n function buffer() {\n this.stack.push({\n type: 'fragment',\n children: []\n });\n }\n\n /**\n * @type {CompileContext['enter']}\n */\n function enter(node, token, errorHandler) {\n const parent = this.stack[this.stack.length - 1];\n /** @type {Array} */\n const siblings = parent.children;\n siblings.push(node);\n this.stack.push(node);\n this.tokenStack.push([token, errorHandler || undefined]);\n node.position = {\n start: point(token.start),\n // @ts-expect-error: `end` will be patched later.\n end: undefined\n };\n }\n\n /**\n * Create a closer handle.\n *\n * @param {Handle | undefined} [and]\n * Optional function to also run.\n * @returns {Handle}\n * Handle.\n */\n function closer(and) {\n return close;\n\n /**\n * @this {CompileContext}\n * @param {Token} token\n * @returns {undefined}\n */\n function close(token) {\n if (and) and.call(this, token);\n exit.call(this, token);\n }\n }\n\n /**\n * @type {CompileContext['exit']}\n */\n function exit(token, onExitError) {\n const node = this.stack.pop();\n const open = this.tokenStack.pop();\n if (!open) {\n throw new Error('Cannot close `' + token.type + '` (' + stringifyPosition({\n start: token.start,\n end: token.end\n }) + '): it\u2019s not open');\n } else if (open[0].type !== token.type) {\n if (onExitError) {\n onExitError.call(this, token, open[0]);\n } else {\n const handler = open[1] || defaultOnError;\n handler.call(this, token, open[0]);\n }\n }\n node.position.end = point(token.end);\n }\n\n /**\n * @type {CompileContext['resume']}\n */\n function resume() {\n return toString(this.stack.pop());\n }\n\n //\n // Handlers.\n //\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onenterlistordered() {\n this.data.expectingFirstListItemValue = true;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onenterlistitemvalue(token) {\n if (this.data.expectingFirstListItemValue) {\n const ancestor = this.stack[this.stack.length - 2];\n ancestor.start = Number.parseInt(this.sliceSerialize(token), 10);\n this.data.expectingFirstListItemValue = undefined;\n }\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitcodefencedfenceinfo() {\n const data = this.resume();\n const node = this.stack[this.stack.length - 1];\n node.lang = data;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitcodefencedfencemeta() {\n const data = this.resume();\n const node = this.stack[this.stack.length - 1];\n node.meta = data;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitcodefencedfence() {\n // Exit if this is the closing fence.\n if (this.data.flowCodeInside) return;\n this.buffer();\n this.data.flowCodeInside = true;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitcodefenced() {\n const data = this.resume();\n const node = this.stack[this.stack.length - 1];\n node.value = data.replace(/^(\\r?\\n|\\r)|(\\r?\\n|\\r)$/g, '');\n this.data.flowCodeInside = undefined;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitcodeindented() {\n const data = this.resume();\n const node = this.stack[this.stack.length - 1];\n node.value = data.replace(/(\\r?\\n|\\r)$/g, '');\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitdefinitionlabelstring(token) {\n const label = this.resume();\n const node = this.stack[this.stack.length - 1];\n node.label = label;\n node.identifier = normalizeIdentifier(this.sliceSerialize(token)).toLowerCase();\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitdefinitiontitlestring() {\n const data = this.resume();\n const node = this.stack[this.stack.length - 1];\n node.title = data;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitdefinitiondestinationstring() {\n const data = this.resume();\n const node = this.stack[this.stack.length - 1];\n node.url = data;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitatxheadingsequence(token) {\n const node = this.stack[this.stack.length - 1];\n if (!node.depth) {\n const depth = this.sliceSerialize(token).length;\n node.depth = depth;\n }\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitsetextheadingtext() {\n this.data.setextHeadingSlurpLineEnding = true;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitsetextheadinglinesequence(token) {\n const node = this.stack[this.stack.length - 1];\n node.depth = this.sliceSerialize(token).codePointAt(0) === 61 ? 1 : 2;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitsetextheading() {\n this.data.setextHeadingSlurpLineEnding = undefined;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onenterdata(token) {\n const node = this.stack[this.stack.length - 1];\n /** @type {Array} */\n const siblings = node.children;\n let tail = siblings[siblings.length - 1];\n if (!tail || tail.type !== 'text') {\n // Add a new text node.\n tail = text();\n tail.position = {\n start: point(token.start),\n // @ts-expect-error: we\u2019ll add `end` later.\n end: undefined\n };\n siblings.push(tail);\n }\n this.stack.push(tail);\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexitdata(token) {\n const tail = this.stack.pop();\n tail.value += this.sliceSerialize(token);\n tail.position.end = point(token.end);\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexitlineending(token) {\n const context = this.stack[this.stack.length - 1];\n // If we\u2019re at a hard break, include the line ending in there.\n if (this.data.atHardBreak) {\n const tail = context.children[context.children.length - 1];\n tail.position.end = point(token.end);\n this.data.atHardBreak = undefined;\n return;\n }\n if (!this.data.setextHeadingSlurpLineEnding && config.canContainEols.includes(context.type)) {\n onenterdata.call(this, token);\n onexitdata.call(this, token);\n }\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexithardbreak() {\n this.data.atHardBreak = true;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexithtmlflow() {\n const data = this.resume();\n const node = this.stack[this.stack.length - 1];\n node.value = data;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexithtmltext() {\n const data = this.resume();\n const node = this.stack[this.stack.length - 1];\n node.value = data;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexitcodetext() {\n const data = this.resume();\n const node = this.stack[this.stack.length - 1];\n node.value = data;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexitlink() {\n const node = this.stack[this.stack.length - 1];\n // Note: there are also `identifier` and `label` fields on this link node!\n // These are used / cleaned here.\n\n // To do: clean.\n if (this.data.inReference) {\n /** @type {ReferenceType} */\n const referenceType = this.data.referenceType || 'shortcut';\n node.type += 'Reference';\n // @ts-expect-error: mutate.\n node.referenceType = referenceType;\n // @ts-expect-error: mutate.\n delete node.url;\n delete node.title;\n } else {\n // @ts-expect-error: mutate.\n delete node.identifier;\n // @ts-expect-error: mutate.\n delete node.label;\n }\n this.data.referenceType = undefined;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexitimage() {\n const node = this.stack[this.stack.length - 1];\n // Note: there are also `identifier` and `label` fields on this link node!\n // These are used / cleaned here.\n\n // To do: clean.\n if (this.data.inReference) {\n /** @type {ReferenceType} */\n const referenceType = this.data.referenceType || 'shortcut';\n node.type += 'Reference';\n // @ts-expect-error: mutate.\n node.referenceType = referenceType;\n // @ts-expect-error: mutate.\n delete node.url;\n delete node.title;\n } else {\n // @ts-expect-error: mutate.\n delete node.identifier;\n // @ts-expect-error: mutate.\n delete node.label;\n }\n this.data.referenceType = undefined;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexitlabeltext(token) {\n const string = this.sliceSerialize(token);\n const ancestor = this.stack[this.stack.length - 2];\n // @ts-expect-error: stash this on the node, as it might become a reference\n // later.\n ancestor.label = decodeString(string);\n // @ts-expect-error: same as above.\n ancestor.identifier = normalizeIdentifier(string).toLowerCase();\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexitlabel() {\n const fragment = this.stack[this.stack.length - 1];\n const value = this.resume();\n const node = this.stack[this.stack.length - 1];\n // Assume a reference.\n this.data.inReference = true;\n if (node.type === 'link') {\n /** @type {Array} */\n const children = fragment.children;\n node.children = children;\n } else {\n node.alt = value;\n }\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexitresourcedestinationstring() {\n const data = this.resume();\n const node = this.stack[this.stack.length - 1];\n node.url = data;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexitresourcetitlestring() {\n const data = this.resume();\n const node = this.stack[this.stack.length - 1];\n node.title = data;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexitresource() {\n this.data.inReference = undefined;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onenterreference() {\n this.data.referenceType = 'collapsed';\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexitreferencestring(token) {\n const label = this.resume();\n const node = this.stack[this.stack.length - 1];\n // @ts-expect-error: stash this on the node, as it might become a reference\n // later.\n node.label = label;\n // @ts-expect-error: same as above.\n node.identifier = normalizeIdentifier(this.sliceSerialize(token)).toLowerCase();\n this.data.referenceType = 'full';\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n\n function onexitcharacterreferencemarker(token) {\n this.data.characterReferenceType = token.type;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitcharacterreferencevalue(token) {\n const data = this.sliceSerialize(token);\n const type = this.data.characterReferenceType;\n /** @type {string} */\n let value;\n if (type) {\n value = decodeNumericCharacterReference(data, type === \"characterReferenceMarkerNumeric\" ? 10 : 16);\n this.data.characterReferenceType = undefined;\n } else {\n const result = decodeNamedCharacterReference(data);\n value = result;\n }\n const tail = this.stack[this.stack.length - 1];\n tail.value += value;\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitcharacterreference(token) {\n const tail = this.stack.pop();\n tail.position.end = point(token.end);\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitautolinkprotocol(token) {\n onexitdata.call(this, token);\n const node = this.stack[this.stack.length - 1];\n node.url = this.sliceSerialize(token);\n }\n\n /**\n * @this {CompileContext}\n * @type {Handle}\n */\n function onexitautolinkemail(token) {\n onexitdata.call(this, token);\n const node = this.stack[this.stack.length - 1];\n node.url = 'mailto:' + this.sliceSerialize(token);\n }\n\n //\n // Creaters.\n //\n\n /** @returns {Blockquote} */\n function blockQuote() {\n return {\n type: 'blockquote',\n children: []\n };\n }\n\n /** @returns {Code} */\n function codeFlow() {\n return {\n type: 'code',\n lang: null,\n meta: null,\n value: ''\n };\n }\n\n /** @returns {InlineCode} */\n function codeText() {\n return {\n type: 'inlineCode',\n value: ''\n };\n }\n\n /** @returns {Definition} */\n function definition() {\n return {\n type: 'definition',\n identifier: '',\n label: null,\n title: null,\n url: ''\n };\n }\n\n /** @returns {Emphasis} */\n function emphasis() {\n return {\n type: 'emphasis',\n children: []\n };\n }\n\n /** @returns {Heading} */\n function heading() {\n return {\n type: 'heading',\n // @ts-expect-error `depth` will be set later.\n depth: 0,\n children: []\n };\n }\n\n /** @returns {Break} */\n function hardBreak() {\n return {\n type: 'break'\n };\n }\n\n /** @returns {Html} */\n function html() {\n return {\n type: 'html',\n value: ''\n };\n }\n\n /** @returns {Image} */\n function image() {\n return {\n type: 'image',\n title: null,\n url: '',\n alt: null\n };\n }\n\n /** @returns {Link} */\n function link() {\n return {\n type: 'link',\n title: null,\n url: '',\n children: []\n };\n }\n\n /**\n * @param {Token} token\n * @returns {List}\n */\n function list(token) {\n return {\n type: 'list',\n ordered: token.type === 'listOrdered',\n start: null,\n spread: token._spread,\n children: []\n };\n }\n\n /**\n * @param {Token} token\n * @returns {ListItem}\n */\n function listItem(token) {\n return {\n type: 'listItem',\n spread: token._spread,\n checked: null,\n children: []\n };\n }\n\n /** @returns {Paragraph} */\n function paragraph() {\n return {\n type: 'paragraph',\n children: []\n };\n }\n\n /** @returns {Strong} */\n function strong() {\n return {\n type: 'strong',\n children: []\n };\n }\n\n /** @returns {Text} */\n function text() {\n return {\n type: 'text',\n value: ''\n };\n }\n\n /** @returns {ThematicBreak} */\n function thematicBreak() {\n return {\n type: 'thematicBreak'\n };\n }\n}\n\n/**\n * Copy a point-like value.\n *\n * @param {Point} d\n * Point-like value.\n * @returns {Point}\n * unist point.\n */\nfunction point(d) {\n return {\n line: d.line,\n column: d.column,\n offset: d.offset\n };\n}\n\n/**\n * @param {Config} combined\n * @param {Array | Extension>} extensions\n * @returns {undefined}\n */\nfunction configure(combined, extensions) {\n let index = -1;\n while (++index < extensions.length) {\n const value = extensions[index];\n if (Array.isArray(value)) {\n configure(combined, value);\n } else {\n extension(combined, value);\n }\n }\n}\n\n/**\n * @param {Config} combined\n * @param {Extension} extension\n * @returns {undefined}\n */\nfunction extension(combined, extension) {\n /** @type {keyof Extension} */\n let key;\n for (key in extension) {\n if (own.call(extension, key)) {\n switch (key) {\n case 'canContainEols':\n {\n const right = extension[key];\n if (right) {\n combined[key].push(...right);\n }\n break;\n }\n case 'transforms':\n {\n const right = extension[key];\n if (right) {\n combined[key].push(...right);\n }\n break;\n }\n case 'enter':\n case 'exit':\n {\n const right = extension[key];\n if (right) {\n Object.assign(combined[key], right);\n }\n break;\n }\n // No default\n }\n }\n }\n}\n\n/** @type {OnEnterError} */\nfunction defaultOnError(left, right) {\n if (left) {\n throw new Error('Cannot close `' + left.type + '` (' + stringifyPosition({\n start: left.start,\n end: left.end\n }) + '): a different token (`' + right.type + '`, ' + stringifyPosition({\n start: right.start,\n end: right.end\n }) + ') is open');\n } else {\n throw new Error('Cannot close document, a token (`' + right.type + '`, ' + stringifyPosition({\n start: right.start,\n end: right.end\n }) + ') is still open');\n }\n}", "/**\n * @typedef {import('mdast').Root} Root\n * @typedef {import('mdast-util-from-markdown').Options} FromMarkdownOptions\n * @typedef {import('unified').Parser} Parser\n * @typedef {import('unified').Processor} Processor\n */\n\n/**\n * @typedef {Omit} Options\n */\n\nimport {fromMarkdown} from 'mdast-util-from-markdown'\n\n/**\n * Aadd support for parsing from markdown.\n *\n * @param {Readonly | null | undefined} [options]\n * Configuration (optional).\n * @returns {undefined}\n * Nothing.\n */\nexport default function remarkParse(options) {\n /** @type {Processor} */\n // @ts-expect-error: TS in JSDoc generates wrong types if `this` is typed regularly.\n const self = this\n\n self.parser = parser\n\n /**\n * @type {Parser}\n */\n function parser(doc) {\n return fromMarkdown(doc, {\n ...self.data('settings'),\n ...options,\n // Note: these options are not in the readme.\n // The goal is for them to be set by plugins on `data` instead of being\n // passed by users.\n extensions: self.data('micromarkExtensions') || [],\n mdastExtensions: self.data('fromMarkdownExtensions') || []\n })\n }\n}\n", "export default function escapeStringRegexp(string) {\n\tif (typeof string !== 'string') {\n\t\tthrow new TypeError('Expected a string');\n\t}\n\n\t// Escape characters with special meaning either inside or outside character sets.\n\t// Use a simple backslash escape when it\u2019s always valid, and a `\\xnn` escape when the simpler form would be disallowed by Unicode patterns\u2019 stricter grammar.\n\treturn string\n\t\t.replace(/[|\\\\{}()[\\]^$+*?.]/g, '\\\\$&')\n\t\t.replace(/-/g, '\\\\x2d');\n}\n", "/**\n * @import {Nodes, Parents, PhrasingContent, Root, Text} from 'mdast'\n * @import {BuildVisitor, Test, VisitorResult} from 'unist-util-visit-parents'\n */\n\n/**\n * @typedef RegExpMatchObject\n * Info on the match.\n * @property {number} index\n * The index of the search at which the result was found.\n * @property {string} input\n * A copy of the search string in the text node.\n * @property {[...Array, Text]} stack\n * All ancestors of the text node, where the last node is the text itself.\n *\n * @typedef {RegExp | string} Find\n * Pattern to find.\n *\n * Strings are escaped and then turned into global expressions.\n *\n * @typedef {Array} FindAndReplaceList\n * Several find and replaces, in array form.\n *\n * @typedef {[Find, Replace?]} FindAndReplaceTuple\n * Find and replace in tuple form.\n *\n * @typedef {ReplaceFunction | string | null | undefined} Replace\n * Thing to replace with.\n *\n * @callback ReplaceFunction\n * Callback called when a search matches.\n * @param {...any} parameters\n * The parameters are the result of corresponding search expression:\n *\n * * `value` (`string`) \u2014 whole match\n * * `...capture` (`Array`) \u2014 matches from regex capture groups\n * * `match` (`RegExpMatchObject`) \u2014 info on the match\n * @returns {Array | PhrasingContent | string | false | null | undefined}\n * Thing to replace with.\n *\n * * when `null`, `undefined`, `''`, remove the match\n * * \u2026or when `false`, do not replace at all\n * * \u2026or when `string`, replace with a text node of that value\n * * \u2026or when `Node` or `Array`, replace with those nodes\n *\n * @typedef {[RegExp, ReplaceFunction]} Pair\n * Normalized find and replace.\n *\n * @typedef {Array} Pairs\n * All find and replaced.\n *\n * @typedef Options\n * Configuration.\n * @property {Test | null | undefined} [ignore]\n * Test for which nodes to ignore (optional).\n */\n\nimport escape from 'escape-string-regexp'\nimport {visitParents} from 'unist-util-visit-parents'\nimport {convert} from 'unist-util-is'\n\n/**\n * Find patterns in a tree and replace them.\n *\n * The algorithm searches the tree in *preorder* for complete values in `Text`\n * nodes.\n * Partial matches are not supported.\n *\n * @param {Nodes} tree\n * Tree to change.\n * @param {FindAndReplaceList | FindAndReplaceTuple} list\n * Patterns to find.\n * @param {Options | null | undefined} [options]\n * Configuration (when `find` is not `Find`).\n * @returns {undefined}\n * Nothing.\n */\nexport function findAndReplace(tree, list, options) {\n const settings = options || {}\n const ignored = convert(settings.ignore || [])\n const pairs = toPairs(list)\n let pairIndex = -1\n\n while (++pairIndex < pairs.length) {\n visitParents(tree, 'text', visitor)\n }\n\n /** @type {BuildVisitor} */\n function visitor(node, parents) {\n let index = -1\n /** @type {Parents | undefined} */\n let grandparent\n\n while (++index < parents.length) {\n const parent = parents[index]\n /** @type {Array | undefined} */\n const siblings = grandparent ? grandparent.children : undefined\n\n if (\n ignored(\n parent,\n siblings ? siblings.indexOf(parent) : undefined,\n grandparent\n )\n ) {\n return\n }\n\n grandparent = parent\n }\n\n if (grandparent) {\n return handler(node, parents)\n }\n }\n\n /**\n * Handle a text node which is not in an ignored parent.\n *\n * @param {Text} node\n * Text node.\n * @param {Array} parents\n * Parents.\n * @returns {VisitorResult}\n * Result.\n */\n function handler(node, parents) {\n const parent = parents[parents.length - 1]\n const find = pairs[pairIndex][0]\n const replace = pairs[pairIndex][1]\n let start = 0\n /** @type {Array} */\n const siblings = parent.children\n const index = siblings.indexOf(node)\n let change = false\n /** @type {Array} */\n let nodes = []\n\n find.lastIndex = 0\n\n let match = find.exec(node.value)\n\n while (match) {\n const position = match.index\n /** @type {RegExpMatchObject} */\n const matchObject = {\n index: match.index,\n input: match.input,\n stack: [...parents, node]\n }\n let value = replace(...match, matchObject)\n\n if (typeof value === 'string') {\n value = value.length > 0 ? {type: 'text', value} : undefined\n }\n\n // It wasn\u2019t a match after all.\n if (value === false) {\n // False acts as if there was no match.\n // So we need to reset `lastIndex`, which currently being at the end of\n // the current match, to the beginning.\n find.lastIndex = position + 1\n } else {\n if (start !== position) {\n nodes.push({\n type: 'text',\n value: node.value.slice(start, position)\n })\n }\n\n if (Array.isArray(value)) {\n nodes.push(...value)\n } else if (value) {\n nodes.push(value)\n }\n\n start = position + match[0].length\n change = true\n }\n\n if (!find.global) {\n break\n }\n\n match = find.exec(node.value)\n }\n\n if (change) {\n if (start < node.value.length) {\n nodes.push({type: 'text', value: node.value.slice(start)})\n }\n\n parent.children.splice(index, 1, ...nodes)\n } else {\n nodes = [node]\n }\n\n return index + nodes.length\n }\n}\n\n/**\n * Turn a tuple or a list of tuples into pairs.\n *\n * @param {FindAndReplaceList | FindAndReplaceTuple} tupleOrList\n * Schema.\n * @returns {Pairs}\n * Clean pairs.\n */\nfunction toPairs(tupleOrList) {\n /** @type {Pairs} */\n const result = []\n\n if (!Array.isArray(tupleOrList)) {\n throw new TypeError('Expected find and replace tuple or list of tuples')\n }\n\n /** @type {FindAndReplaceList} */\n // @ts-expect-error: correct.\n const list =\n !tupleOrList[0] || Array.isArray(tupleOrList[0])\n ? tupleOrList\n : [tupleOrList]\n\n let index = -1\n\n while (++index < list.length) {\n const tuple = list[index]\n result.push([toExpression(tuple[0]), toFunction(tuple[1])])\n }\n\n return result\n}\n\n/**\n * Turn a find into an expression.\n *\n * @param {Find} find\n * Find.\n * @returns {RegExp}\n * Expression.\n */\nfunction toExpression(find) {\n return typeof find === 'string' ? new RegExp(escape(find), 'g') : find\n}\n\n/**\n * Turn a replace into a function.\n *\n * @param {Replace} replace\n * Replace.\n * @returns {ReplaceFunction}\n * Function.\n */\nfunction toFunction(replace) {\n return typeof replace === 'function'\n ? replace\n : function () {\n return replace\n }\n}\n", "/**\n * @import {RegExpMatchObject, ReplaceFunction} from 'mdast-util-find-and-replace'\n * @import {CompileContext, Extension as FromMarkdownExtension, Handle as FromMarkdownHandle, Transform as FromMarkdownTransform} from 'mdast-util-from-markdown'\n * @import {ConstructName, Options as ToMarkdownExtension} from 'mdast-util-to-markdown'\n * @import {Link, PhrasingContent} from 'mdast'\n */\n\nimport {ccount} from 'ccount'\nimport {ok as assert} from 'devlop'\nimport {unicodePunctuation, unicodeWhitespace} from 'micromark-util-character'\nimport {findAndReplace} from 'mdast-util-find-and-replace'\n\n/** @type {ConstructName} */\nconst inConstruct = 'phrasing'\n/** @type {Array} */\nconst notInConstruct = ['autolink', 'link', 'image', 'label']\n\n/**\n * Create an extension for `mdast-util-from-markdown` to enable GFM autolink\n * literals in markdown.\n *\n * @returns {FromMarkdownExtension}\n * Extension for `mdast-util-to-markdown` to enable GFM autolink literals.\n */\nexport function gfmAutolinkLiteralFromMarkdown() {\n return {\n transforms: [transformGfmAutolinkLiterals],\n enter: {\n literalAutolink: enterLiteralAutolink,\n literalAutolinkEmail: enterLiteralAutolinkValue,\n literalAutolinkHttp: enterLiteralAutolinkValue,\n literalAutolinkWww: enterLiteralAutolinkValue\n },\n exit: {\n literalAutolink: exitLiteralAutolink,\n literalAutolinkEmail: exitLiteralAutolinkEmail,\n literalAutolinkHttp: exitLiteralAutolinkHttp,\n literalAutolinkWww: exitLiteralAutolinkWww\n }\n }\n}\n\n/**\n * Create an extension for `mdast-util-to-markdown` to enable GFM autolink\n * literals in markdown.\n *\n * @returns {ToMarkdownExtension}\n * Extension for `mdast-util-to-markdown` to enable GFM autolink literals.\n */\nexport function gfmAutolinkLiteralToMarkdown() {\n return {\n unsafe: [\n {\n character: '@',\n before: '[+\\\\-.\\\\w]',\n after: '[\\\\-.\\\\w]',\n inConstruct,\n notInConstruct\n },\n {\n character: '.',\n before: '[Ww]',\n after: '[\\\\-.\\\\w]',\n inConstruct,\n notInConstruct\n },\n {\n character: ':',\n before: '[ps]',\n after: '\\\\/',\n inConstruct,\n notInConstruct\n }\n ]\n }\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction enterLiteralAutolink(token) {\n this.enter({type: 'link', title: null, url: '', children: []}, token)\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction enterLiteralAutolinkValue(token) {\n this.config.enter.autolinkProtocol.call(this, token)\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitLiteralAutolinkHttp(token) {\n this.config.exit.autolinkProtocol.call(this, token)\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitLiteralAutolinkWww(token) {\n this.config.exit.data.call(this, token)\n const node = this.stack[this.stack.length - 1]\n assert(node.type === 'link')\n node.url = 'http://' + this.sliceSerialize(token)\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitLiteralAutolinkEmail(token) {\n this.config.exit.autolinkEmail.call(this, token)\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitLiteralAutolink(token) {\n this.exit(token)\n}\n\n/** @type {FromMarkdownTransform} */\nfunction transformGfmAutolinkLiterals(tree) {\n findAndReplace(\n tree,\n [\n [/(https?:\\/\\/|www(?=\\.))([-.\\w]+)([^ \\t\\r\\n]*)/gi, findUrl],\n [/(?<=^|\\s|\\p{P}|\\p{S})([-.\\w+]+)@([-\\w]+(?:\\.[-\\w]+)+)/gu, findEmail]\n ],\n {ignore: ['link', 'linkReference']}\n )\n}\n\n/**\n * @type {ReplaceFunction}\n * @param {string} _\n * @param {string} protocol\n * @param {string} domain\n * @param {string} path\n * @param {RegExpMatchObject} match\n * @returns {Array | Link | false}\n */\n// eslint-disable-next-line max-params\nfunction findUrl(_, protocol, domain, path, match) {\n let prefix = ''\n\n // Not an expected previous character.\n if (!previous(match)) {\n return false\n }\n\n // Treat `www` as part of the domain.\n if (/^w/i.test(protocol)) {\n domain = protocol + domain\n protocol = ''\n prefix = 'http://'\n }\n\n if (!isCorrectDomain(domain)) {\n return false\n }\n\n const parts = splitUrl(domain + path)\n\n if (!parts[0]) return false\n\n /** @type {Link} */\n const result = {\n type: 'link',\n title: null,\n url: prefix + protocol + parts[0],\n children: [{type: 'text', value: protocol + parts[0]}]\n }\n\n if (parts[1]) {\n return [result, {type: 'text', value: parts[1]}]\n }\n\n return result\n}\n\n/**\n * @type {ReplaceFunction}\n * @param {string} _\n * @param {string} atext\n * @param {string} label\n * @param {RegExpMatchObject} match\n * @returns {Link | false}\n */\nfunction findEmail(_, atext, label, match) {\n if (\n // Not an expected previous character.\n !previous(match, true) ||\n // Label ends in not allowed character.\n /[-\\d_]$/.test(label)\n ) {\n return false\n }\n\n return {\n type: 'link',\n title: null,\n url: 'mailto:' + atext + '@' + label,\n children: [{type: 'text', value: atext + '@' + label}]\n }\n}\n\n/**\n * @param {string} domain\n * @returns {boolean}\n */\nfunction isCorrectDomain(domain) {\n const parts = domain.split('.')\n\n if (\n parts.length < 2 ||\n (parts[parts.length - 1] &&\n (/_/.test(parts[parts.length - 1]) ||\n !/[a-zA-Z\\d]/.test(parts[parts.length - 1]))) ||\n (parts[parts.length - 2] &&\n (/_/.test(parts[parts.length - 2]) ||\n !/[a-zA-Z\\d]/.test(parts[parts.length - 2])))\n ) {\n return false\n }\n\n return true\n}\n\n/**\n * @param {string} url\n * @returns {[string, string | undefined]}\n */\nfunction splitUrl(url) {\n const trailExec = /[!\"&'),.:;<>?\\]}]+$/.exec(url)\n\n if (!trailExec) {\n return [url, undefined]\n }\n\n url = url.slice(0, trailExec.index)\n\n let trail = trailExec[0]\n let closingParenIndex = trail.indexOf(')')\n const openingParens = ccount(url, '(')\n let closingParens = ccount(url, ')')\n\n while (closingParenIndex !== -1 && openingParens > closingParens) {\n url += trail.slice(0, closingParenIndex + 1)\n trail = trail.slice(closingParenIndex + 1)\n closingParenIndex = trail.indexOf(')')\n closingParens++\n }\n\n return [url, trail]\n}\n\n/**\n * @param {RegExpMatchObject} match\n * @param {boolean | null | undefined} [email=false]\n * @returns {boolean}\n */\nfunction previous(match, email) {\n const code = match.input.charCodeAt(match.index - 1)\n\n return (\n (match.index === 0 ||\n unicodeWhitespace(code) ||\n unicodePunctuation(code)) &&\n // If it\u2019s an email, the previous character should not be a slash.\n (!email || code !== 47)\n )\n}\n", "/**\n * @import {\n * CompileContext,\n * Extension as FromMarkdownExtension,\n * Handle as FromMarkdownHandle\n * } from 'mdast-util-from-markdown'\n * @import {ToMarkdownOptions} from 'mdast-util-gfm-footnote'\n * @import {\n * Handle as ToMarkdownHandle,\n * Map,\n * Options as ToMarkdownExtension\n * } from 'mdast-util-to-markdown'\n * @import {FootnoteDefinition, FootnoteReference} from 'mdast'\n */\n\nimport {ok as assert} from 'devlop'\nimport {normalizeIdentifier} from 'micromark-util-normalize-identifier'\n\nfootnoteReference.peek = footnoteReferencePeek\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction enterFootnoteCallString() {\n this.buffer()\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction enterFootnoteCall(token) {\n this.enter({type: 'footnoteReference', identifier: '', label: ''}, token)\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction enterFootnoteDefinitionLabelString() {\n this.buffer()\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction enterFootnoteDefinition(token) {\n this.enter(\n {type: 'footnoteDefinition', identifier: '', label: '', children: []},\n token\n )\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitFootnoteCallString(token) {\n const label = this.resume()\n const node = this.stack[this.stack.length - 1]\n assert(node.type === 'footnoteReference')\n node.identifier = normalizeIdentifier(\n this.sliceSerialize(token)\n ).toLowerCase()\n node.label = label\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitFootnoteCall(token) {\n this.exit(token)\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitFootnoteDefinitionLabelString(token) {\n const label = this.resume()\n const node = this.stack[this.stack.length - 1]\n assert(node.type === 'footnoteDefinition')\n node.identifier = normalizeIdentifier(\n this.sliceSerialize(token)\n ).toLowerCase()\n node.label = label\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitFootnoteDefinition(token) {\n this.exit(token)\n}\n\n/** @type {ToMarkdownHandle} */\nfunction footnoteReferencePeek() {\n return '['\n}\n\n/**\n * @type {ToMarkdownHandle}\n * @param {FootnoteReference} node\n */\nfunction footnoteReference(node, _, state, info) {\n const tracker = state.createTracker(info)\n let value = tracker.move('[^')\n const exit = state.enter('footnoteReference')\n const subexit = state.enter('reference')\n value += tracker.move(\n state.safe(state.associationId(node), {after: ']', before: value})\n )\n subexit()\n exit()\n value += tracker.move(']')\n return value\n}\n\n/**\n * Create an extension for `mdast-util-from-markdown` to enable GFM footnotes\n * in markdown.\n *\n * @returns {FromMarkdownExtension}\n * Extension for `mdast-util-from-markdown`.\n */\nexport function gfmFootnoteFromMarkdown() {\n return {\n enter: {\n gfmFootnoteCallString: enterFootnoteCallString,\n gfmFootnoteCall: enterFootnoteCall,\n gfmFootnoteDefinitionLabelString: enterFootnoteDefinitionLabelString,\n gfmFootnoteDefinition: enterFootnoteDefinition\n },\n exit: {\n gfmFootnoteCallString: exitFootnoteCallString,\n gfmFootnoteCall: exitFootnoteCall,\n gfmFootnoteDefinitionLabelString: exitFootnoteDefinitionLabelString,\n gfmFootnoteDefinition: exitFootnoteDefinition\n }\n }\n}\n\n/**\n * Create an extension for `mdast-util-to-markdown` to enable GFM footnotes\n * in markdown.\n *\n * @param {ToMarkdownOptions | null | undefined} [options]\n * Configuration (optional).\n * @returns {ToMarkdownExtension}\n * Extension for `mdast-util-to-markdown`.\n */\nexport function gfmFootnoteToMarkdown(options) {\n // To do: next major: change default.\n let firstLineBlank = false\n\n if (options && options.firstLineBlank) {\n firstLineBlank = true\n }\n\n return {\n handlers: {footnoteDefinition, footnoteReference},\n // This is on by default already.\n unsafe: [{character: '[', inConstruct: ['label', 'phrasing', 'reference']}]\n }\n\n /**\n * @type {ToMarkdownHandle}\n * @param {FootnoteDefinition} node\n */\n function footnoteDefinition(node, _, state, info) {\n const tracker = state.createTracker(info)\n let value = tracker.move('[^')\n const exit = state.enter('footnoteDefinition')\n const subexit = state.enter('label')\n value += tracker.move(\n state.safe(state.associationId(node), {before: value, after: ']'})\n )\n subexit()\n\n value += tracker.move(']:')\n\n if (node.children && node.children.length > 0) {\n tracker.shift(4)\n\n value += tracker.move(\n (firstLineBlank ? '\\n' : ' ') +\n state.indentLines(\n state.containerFlow(node, tracker.current()),\n firstLineBlank ? mapAll : mapExceptFirst\n )\n )\n }\n\n exit()\n\n return value\n }\n}\n\n/** @type {Map} */\nfunction mapExceptFirst(line, index, blank) {\n return index === 0 ? line : mapAll(line, index, blank)\n}\n\n/** @type {Map} */\nfunction mapAll(line, index, blank) {\n return (blank ? '' : ' ') + line\n}\n", "/**\n * @typedef {import('mdast').Delete} Delete\n *\n * @typedef {import('mdast-util-from-markdown').CompileContext} CompileContext\n * @typedef {import('mdast-util-from-markdown').Extension} FromMarkdownExtension\n * @typedef {import('mdast-util-from-markdown').Handle} FromMarkdownHandle\n *\n * @typedef {import('mdast-util-to-markdown').ConstructName} ConstructName\n * @typedef {import('mdast-util-to-markdown').Handle} ToMarkdownHandle\n * @typedef {import('mdast-util-to-markdown').Options} ToMarkdownExtension\n */\n\n/**\n * List of constructs that occur in phrasing (paragraphs, headings), but cannot\n * contain strikethrough.\n * So they sort of cancel each other out.\n * Note: could use a better name.\n *\n * Note: keep in sync with: \n *\n * @type {Array}\n */\nconst constructsWithoutStrikethrough = [\n 'autolink',\n 'destinationLiteral',\n 'destinationRaw',\n 'reference',\n 'titleQuote',\n 'titleApostrophe'\n]\n\nhandleDelete.peek = peekDelete\n\n/**\n * Create an extension for `mdast-util-from-markdown` to enable GFM\n * strikethrough in markdown.\n *\n * @returns {FromMarkdownExtension}\n * Extension for `mdast-util-from-markdown` to enable GFM strikethrough.\n */\nexport function gfmStrikethroughFromMarkdown() {\n return {\n canContainEols: ['delete'],\n enter: {strikethrough: enterStrikethrough},\n exit: {strikethrough: exitStrikethrough}\n }\n}\n\n/**\n * Create an extension for `mdast-util-to-markdown` to enable GFM\n * strikethrough in markdown.\n *\n * @returns {ToMarkdownExtension}\n * Extension for `mdast-util-to-markdown` to enable GFM strikethrough.\n */\nexport function gfmStrikethroughToMarkdown() {\n return {\n unsafe: [\n {\n character: '~',\n inConstruct: 'phrasing',\n notInConstruct: constructsWithoutStrikethrough\n }\n ],\n handlers: {delete: handleDelete}\n }\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction enterStrikethrough(token) {\n this.enter({type: 'delete', children: []}, token)\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitStrikethrough(token) {\n this.exit(token)\n}\n\n/**\n * @type {ToMarkdownHandle}\n * @param {Delete} node\n */\nfunction handleDelete(node, _, state, info) {\n const tracker = state.createTracker(info)\n const exit = state.enter('strikethrough')\n let value = tracker.move('~~')\n value += state.containerPhrasing(node, {\n ...tracker.current(),\n before: value,\n after: '~'\n })\n value += tracker.move('~~')\n exit()\n return value\n}\n\n/** @type {ToMarkdownHandle} */\nfunction peekDelete() {\n return '~'\n}\n", "// To do: next major: remove.\n/**\n * @typedef {Options} MarkdownTableOptions\n * Configuration.\n */\n\n/**\n * @typedef Options\n * Configuration.\n * @property {boolean | null | undefined} [alignDelimiters=true]\n * Whether to align the delimiters (default: `true`);\n * they are aligned by default:\n *\n * ```markdown\n * | Alpha | B |\n * | ----- | ----- |\n * | C | Delta |\n * ```\n *\n * Pass `false` to make them staggered:\n *\n * ```markdown\n * | Alpha | B |\n * | - | - |\n * | C | Delta |\n * ```\n * @property {ReadonlyArray | string | null | undefined} [align]\n * How to align columns (default: `''`);\n * one style for all columns or styles for their respective columns;\n * each style is either `'l'` (left), `'r'` (right), or `'c'` (center);\n * other values are treated as `''`, which doesn\u2019t place the colon in the\n * alignment row but does align left;\n * *only the lowercased first character is used, so `Right` is fine.*\n * @property {boolean | null | undefined} [delimiterEnd=true]\n * Whether to end each row with the delimiter (default: `true`).\n *\n * > \uD83D\uDC49 **Note**: please don\u2019t use this: it could create fragile structures\n * > that aren\u2019t understandable to some markdown parsers.\n *\n * When `true`, there are ending delimiters:\n *\n * ```markdown\n * | Alpha | B |\n * | ----- | ----- |\n * | C | Delta |\n * ```\n *\n * When `false`, there are no ending delimiters:\n *\n * ```markdown\n * | Alpha | B\n * | ----- | -----\n * | C | Delta\n * ```\n * @property {boolean | null | undefined} [delimiterStart=true]\n * Whether to begin each row with the delimiter (default: `true`).\n *\n * > \uD83D\uDC49 **Note**: please don\u2019t use this: it could create fragile structures\n * > that aren\u2019t understandable to some markdown parsers.\n *\n * When `true`, there are starting delimiters:\n *\n * ```markdown\n * | Alpha | B |\n * | ----- | ----- |\n * | C | Delta |\n * ```\n *\n * When `false`, there are no starting delimiters:\n *\n * ```markdown\n * Alpha | B |\n * ----- | ----- |\n * C | Delta |\n * ```\n * @property {boolean | null | undefined} [padding=true]\n * Whether to add a space of padding between delimiters and cells\n * (default: `true`).\n *\n * When `true`, there is padding:\n *\n * ```markdown\n * | Alpha | B |\n * | ----- | ----- |\n * | C | Delta |\n * ```\n *\n * When `false`, there is no padding:\n *\n * ```markdown\n * |Alpha|B |\n * |-----|-----|\n * |C |Delta|\n * ```\n * @property {((value: string) => number) | null | undefined} [stringLength]\n * Function to detect the length of table cell content (optional);\n * this is used when aligning the delimiters (`|`) between table cells;\n * full-width characters and emoji mess up delimiter alignment when viewing\n * the markdown source;\n * to fix this, you can pass this function,\n * which receives the cell content and returns its \u201Cvisible\u201D size;\n * note that what is and isn\u2019t visible depends on where the text is displayed.\n *\n * Without such a function, the following:\n *\n * ```js\n * markdownTable([\n * ['Alpha', 'Bravo'],\n * ['\u4E2D\u6587', 'Charlie'],\n * ['\uD83D\uDC69\u200D\u2764\uFE0F\u200D\uD83D\uDC69', 'Delta']\n * ])\n * ```\n *\n * Yields:\n *\n * ```markdown\n * | Alpha | Bravo |\n * | - | - |\n * | \u4E2D\u6587 | Charlie |\n * | \uD83D\uDC69\u200D\u2764\uFE0F\u200D\uD83D\uDC69 | Delta |\n * ```\n *\n * With [`string-width`](https://github.com/sindresorhus/string-width):\n *\n * ```js\n * import stringWidth from 'string-width'\n *\n * markdownTable(\n * [\n * ['Alpha', 'Bravo'],\n * ['\u4E2D\u6587', 'Charlie'],\n * ['\uD83D\uDC69\u200D\u2764\uFE0F\u200D\uD83D\uDC69', 'Delta']\n * ],\n * {stringLength: stringWidth}\n * )\n * ```\n *\n * Yields:\n *\n * ```markdown\n * | Alpha | Bravo |\n * | ----- | ------- |\n * | \u4E2D\u6587 | Charlie |\n * | \uD83D\uDC69\u200D\u2764\uFE0F\u200D\uD83D\uDC69 | Delta |\n * ```\n */\n\n/**\n * @param {string} value\n * Cell value.\n * @returns {number}\n * Cell size.\n */\nfunction defaultStringLength(value) {\n return value.length\n}\n\n/**\n * Generate a markdown\n * ([GFM](https://docs.github.com/en/github/writing-on-github/working-with-advanced-formatting/organizing-information-with-tables))\n * table.\n *\n * @param {ReadonlyArray>} table\n * Table data (matrix of strings).\n * @param {Readonly | null | undefined} [options]\n * Configuration (optional).\n * @returns {string}\n * Result.\n */\nexport function markdownTable(table, options) {\n const settings = options || {}\n // To do: next major: change to spread.\n const align = (settings.align || []).concat()\n const stringLength = settings.stringLength || defaultStringLength\n /** @type {Array} Character codes as symbols for alignment per column. */\n const alignments = []\n /** @type {Array>} Cells per row. */\n const cellMatrix = []\n /** @type {Array>} Sizes of each cell per row. */\n const sizeMatrix = []\n /** @type {Array} */\n const longestCellByColumn = []\n let mostCellsPerRow = 0\n let rowIndex = -1\n\n // This is a superfluous loop if we don\u2019t align delimiters, but otherwise we\u2019d\n // do superfluous work when aligning, so optimize for aligning.\n while (++rowIndex < table.length) {\n /** @type {Array} */\n const row = []\n /** @type {Array} */\n const sizes = []\n let columnIndex = -1\n\n if (table[rowIndex].length > mostCellsPerRow) {\n mostCellsPerRow = table[rowIndex].length\n }\n\n while (++columnIndex < table[rowIndex].length) {\n const cell = serialize(table[rowIndex][columnIndex])\n\n if (settings.alignDelimiters !== false) {\n const size = stringLength(cell)\n sizes[columnIndex] = size\n\n if (\n longestCellByColumn[columnIndex] === undefined ||\n size > longestCellByColumn[columnIndex]\n ) {\n longestCellByColumn[columnIndex] = size\n }\n }\n\n row.push(cell)\n }\n\n cellMatrix[rowIndex] = row\n sizeMatrix[rowIndex] = sizes\n }\n\n // Figure out which alignments to use.\n let columnIndex = -1\n\n if (typeof align === 'object' && 'length' in align) {\n while (++columnIndex < mostCellsPerRow) {\n alignments[columnIndex] = toAlignment(align[columnIndex])\n }\n } else {\n const code = toAlignment(align)\n\n while (++columnIndex < mostCellsPerRow) {\n alignments[columnIndex] = code\n }\n }\n\n // Inject the alignment row.\n columnIndex = -1\n /** @type {Array} */\n const row = []\n /** @type {Array} */\n const sizes = []\n\n while (++columnIndex < mostCellsPerRow) {\n const code = alignments[columnIndex]\n let before = ''\n let after = ''\n\n if (code === 99 /* `c` */) {\n before = ':'\n after = ':'\n } else if (code === 108 /* `l` */) {\n before = ':'\n } else if (code === 114 /* `r` */) {\n after = ':'\n }\n\n // There *must* be at least one hyphen-minus in each alignment cell.\n let size =\n settings.alignDelimiters === false\n ? 1\n : Math.max(\n 1,\n longestCellByColumn[columnIndex] - before.length - after.length\n )\n\n const cell = before + '-'.repeat(size) + after\n\n if (settings.alignDelimiters !== false) {\n size = before.length + size + after.length\n\n if (size > longestCellByColumn[columnIndex]) {\n longestCellByColumn[columnIndex] = size\n }\n\n sizes[columnIndex] = size\n }\n\n row[columnIndex] = cell\n }\n\n // Inject the alignment row.\n cellMatrix.splice(1, 0, row)\n sizeMatrix.splice(1, 0, sizes)\n\n rowIndex = -1\n /** @type {Array} */\n const lines = []\n\n while (++rowIndex < cellMatrix.length) {\n const row = cellMatrix[rowIndex]\n const sizes = sizeMatrix[rowIndex]\n columnIndex = -1\n /** @type {Array} */\n const line = []\n\n while (++columnIndex < mostCellsPerRow) {\n const cell = row[columnIndex] || ''\n let before = ''\n let after = ''\n\n if (settings.alignDelimiters !== false) {\n const size =\n longestCellByColumn[columnIndex] - (sizes[columnIndex] || 0)\n const code = alignments[columnIndex]\n\n if (code === 114 /* `r` */) {\n before = ' '.repeat(size)\n } else if (code === 99 /* `c` */) {\n if (size % 2) {\n before = ' '.repeat(size / 2 + 0.5)\n after = ' '.repeat(size / 2 - 0.5)\n } else {\n before = ' '.repeat(size / 2)\n after = before\n }\n } else {\n after = ' '.repeat(size)\n }\n }\n\n if (settings.delimiterStart !== false && !columnIndex) {\n line.push('|')\n }\n\n if (\n settings.padding !== false &&\n // Don\u2019t add the opening space if we\u2019re not aligning and the cell is\n // empty: there will be a closing space.\n !(settings.alignDelimiters === false && cell === '') &&\n (settings.delimiterStart !== false || columnIndex)\n ) {\n line.push(' ')\n }\n\n if (settings.alignDelimiters !== false) {\n line.push(before)\n }\n\n line.push(cell)\n\n if (settings.alignDelimiters !== false) {\n line.push(after)\n }\n\n if (settings.padding !== false) {\n line.push(' ')\n }\n\n if (\n settings.delimiterEnd !== false ||\n columnIndex !== mostCellsPerRow - 1\n ) {\n line.push('|')\n }\n }\n\n lines.push(\n settings.delimiterEnd === false\n ? line.join('').replace(/ +$/, '')\n : line.join('')\n )\n }\n\n return lines.join('\\n')\n}\n\n/**\n * @param {string | null | undefined} [value]\n * Value to serialize.\n * @returns {string}\n * Result.\n */\nfunction serialize(value) {\n return value === null || value === undefined ? '' : String(value)\n}\n\n/**\n * @param {string | null | undefined} value\n * Value.\n * @returns {number}\n * Alignment.\n */\nfunction toAlignment(value) {\n const code = typeof value === 'string' ? value.codePointAt(0) : 0\n\n return code === 67 /* `C` */ || code === 99 /* `c` */\n ? 99 /* `c` */\n : code === 76 /* `L` */ || code === 108 /* `l` */\n ? 108 /* `l` */\n : code === 82 /* `R` */ || code === 114 /* `r` */\n ? 114 /* `r` */\n : 0\n}\n", "/**\n * @import {Blockquote, Parents} from 'mdast'\n * @import {Info, Map, State} from 'mdast-util-to-markdown'\n */\n\n/**\n * @param {Blockquote} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function blockquote(node, _, state, info) {\n const exit = state.enter('blockquote')\n const tracker = state.createTracker(info)\n tracker.move('> ')\n tracker.shift(2)\n const value = state.indentLines(\n state.containerFlow(node, tracker.current()),\n map\n )\n exit()\n return value\n}\n\n/** @type {Map} */\nfunction map(line, _, blank) {\n return '>' + (blank ? '' : ' ') + line\n}\n", "/**\n * @import {ConstructName, Unsafe} from 'mdast-util-to-markdown'\n */\n\n/**\n * @param {Array} stack\n * @param {Unsafe} pattern\n * @returns {boolean}\n */\nexport function patternInScope(stack, pattern) {\n return (\n listInScope(stack, pattern.inConstruct, true) &&\n !listInScope(stack, pattern.notInConstruct, false)\n )\n}\n\n/**\n * @param {Array} stack\n * @param {Unsafe['inConstruct']} list\n * @param {boolean} none\n * @returns {boolean}\n */\nfunction listInScope(stack, list, none) {\n if (typeof list === 'string') {\n list = [list]\n }\n\n if (!list || list.length === 0) {\n return none\n }\n\n let index = -1\n\n while (++index < list.length) {\n if (stack.includes(list[index])) {\n return true\n }\n }\n\n return false\n}\n", "/**\n * @import {Break, Parents} from 'mdast'\n * @import {Info, State} from 'mdast-util-to-markdown'\n */\n\nimport {patternInScope} from '../util/pattern-in-scope.js'\n\n/**\n * @param {Break} _\n * @param {Parents | undefined} _1\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function hardBreak(_, _1, state, info) {\n let index = -1\n\n while (++index < state.unsafe.length) {\n // If we can\u2019t put eols in this construct (setext headings, tables), use a\n // space instead.\n if (\n state.unsafe[index].character === '\\n' &&\n patternInScope(state.stack, state.unsafe[index])\n ) {\n return /[ \\t]/.test(info.before) ? '' : ' '\n }\n }\n\n return '\\\\\\n'\n}\n", "/**\n * Get the count of the longest repeating streak of `substring` in `value`.\n *\n * @param {string} value\n * Content to search in.\n * @param {string} substring\n * Substring to look for, typically one character.\n * @returns {number}\n * Count of most frequent adjacent `substring`s in `value`.\n */\nexport function longestStreak(value, substring) {\n const source = String(value)\n let index = source.indexOf(substring)\n let expected = index\n let count = 0\n let max = 0\n\n if (typeof substring !== 'string') {\n throw new TypeError('Expected substring')\n }\n\n while (index !== -1) {\n if (index === expected) {\n if (++count > max) {\n max = count\n }\n } else {\n count = 1\n }\n\n expected = index + substring.length\n index = source.indexOf(substring, expected)\n }\n\n return max\n}\n", "/**\n * @import {State} from 'mdast-util-to-markdown'\n * @import {Code} from 'mdast'\n */\n\n/**\n * @param {Code} node\n * @param {State} state\n * @returns {boolean}\n */\nexport function formatCodeAsIndented(node, state) {\n return Boolean(\n state.options.fences === false &&\n node.value &&\n // If there\u2019s no info\u2026\n !node.lang &&\n // And there\u2019s a non-whitespace character\u2026\n /[^ \\r\\n]/.test(node.value) &&\n // And the value doesn\u2019t start or end in a blank\u2026\n !/^[\\t ]*(?:[\\r\\n]|$)|(?:^|[\\r\\n])[\\t ]*$/.test(node.value)\n )\n}\n", "/**\n * @import {Options, State} from 'mdast-util-to-markdown'\n */\n\n/**\n * @param {State} state\n * @returns {Exclude}\n */\nexport function checkFence(state) {\n const marker = state.options.fence || '`'\n\n if (marker !== '`' && marker !== '~') {\n throw new Error(\n 'Cannot serialize code with `' +\n marker +\n '` for `options.fence`, expected `` ` `` or `~`'\n )\n }\n\n return marker\n}\n", "/**\n * @import {Info, Map, State} from 'mdast-util-to-markdown'\n * @import {Code, Parents} from 'mdast'\n */\n\nimport {longestStreak} from 'longest-streak'\nimport {formatCodeAsIndented} from '../util/format-code-as-indented.js'\nimport {checkFence} from '../util/check-fence.js'\n\n/**\n * @param {Code} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function code(node, _, state, info) {\n const marker = checkFence(state)\n const raw = node.value || ''\n const suffix = marker === '`' ? 'GraveAccent' : 'Tilde'\n\n if (formatCodeAsIndented(node, state)) {\n const exit = state.enter('codeIndented')\n const value = state.indentLines(raw, map)\n exit()\n return value\n }\n\n const tracker = state.createTracker(info)\n const sequence = marker.repeat(Math.max(longestStreak(raw, marker) + 1, 3))\n const exit = state.enter('codeFenced')\n let value = tracker.move(sequence)\n\n if (node.lang) {\n const subexit = state.enter(`codeFencedLang${suffix}`)\n value += tracker.move(\n state.safe(node.lang, {\n before: value,\n after: ' ',\n encode: ['`'],\n ...tracker.current()\n })\n )\n subexit()\n }\n\n if (node.lang && node.meta) {\n const subexit = state.enter(`codeFencedMeta${suffix}`)\n value += tracker.move(' ')\n value += tracker.move(\n state.safe(node.meta, {\n before: value,\n after: '\\n',\n encode: ['`'],\n ...tracker.current()\n })\n )\n subexit()\n }\n\n value += tracker.move('\\n')\n\n if (raw) {\n value += tracker.move(raw + '\\n')\n }\n\n value += tracker.move(sequence)\n exit()\n return value\n}\n\n/** @type {Map} */\nfunction map(line, _, blank) {\n return (blank ? '' : ' ') + line\n}\n", "/**\n * @import {Options, State} from 'mdast-util-to-markdown'\n */\n\n/**\n * @param {State} state\n * @returns {Exclude}\n */\nexport function checkQuote(state) {\n const marker = state.options.quote || '\"'\n\n if (marker !== '\"' && marker !== \"'\") {\n throw new Error(\n 'Cannot serialize title with `' +\n marker +\n '` for `options.quote`, expected `\"`, or `\\'`'\n )\n }\n\n return marker\n}\n", "/**\n * @import {Info, State} from 'mdast-util-to-markdown'\n * @import {Definition, Parents} from 'mdast'\n */\n\nimport {checkQuote} from '../util/check-quote.js'\n\n/**\n * @param {Definition} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function definition(node, _, state, info) {\n const quote = checkQuote(state)\n const suffix = quote === '\"' ? 'Quote' : 'Apostrophe'\n const exit = state.enter('definition')\n let subexit = state.enter('label')\n const tracker = state.createTracker(info)\n let value = tracker.move('[')\n value += tracker.move(\n state.safe(state.associationId(node), {\n before: value,\n after: ']',\n ...tracker.current()\n })\n )\n value += tracker.move(']: ')\n\n subexit()\n\n if (\n // If there\u2019s no url, or\u2026\n !node.url ||\n // If there are control characters or whitespace.\n /[\\0- \\u007F]/.test(node.url)\n ) {\n subexit = state.enter('destinationLiteral')\n value += tracker.move('<')\n value += tracker.move(\n state.safe(node.url, {before: value, after: '>', ...tracker.current()})\n )\n value += tracker.move('>')\n } else {\n // No whitespace, raw is prettier.\n subexit = state.enter('destinationRaw')\n value += tracker.move(\n state.safe(node.url, {\n before: value,\n after: node.title ? ' ' : '\\n',\n ...tracker.current()\n })\n )\n }\n\n subexit()\n\n if (node.title) {\n subexit = state.enter(`title${suffix}`)\n value += tracker.move(' ' + quote)\n value += tracker.move(\n state.safe(node.title, {\n before: value,\n after: quote,\n ...tracker.current()\n })\n )\n value += tracker.move(quote)\n subexit()\n }\n\n exit()\n\n return value\n}\n", "/**\n * @import {Options, State} from 'mdast-util-to-markdown'\n */\n\n/**\n * @param {State} state\n * @returns {Exclude}\n */\nexport function checkEmphasis(state) {\n const marker = state.options.emphasis || '*'\n\n if (marker !== '*' && marker !== '_') {\n throw new Error(\n 'Cannot serialize emphasis with `' +\n marker +\n '` for `options.emphasis`, expected `*`, or `_`'\n )\n }\n\n return marker\n}\n", "/**\n * Encode a code point as a character reference.\n *\n * @param {number} code\n * Code point to encode.\n * @returns {string}\n * Encoded character reference.\n */\nexport function encodeCharacterReference(code) {\n return '&#x' + code.toString(16).toUpperCase() + ';'\n}\n", "/**\n * @import {EncodeSides} from '../types.js'\n */\n\nimport {classifyCharacter} from 'micromark-util-classify-character'\n\n/**\n * Check whether to encode (as a character reference) the characters\n * surrounding an attention run.\n *\n * Which characters are around an attention run influence whether it works or\n * not.\n *\n * See for more info.\n * See this markdown in a particular renderer to see what works:\n *\n * ```markdown\n * | | A (letter inside) | B (punctuation inside) | C (whitespace inside) | D (nothing inside) |\n * | ----------------------- | ----------------- | ---------------------- | --------------------- | ------------------ |\n * | 1 (letter outside) | x*y*z | x*.*z | x* *z | x**z |\n * | 2 (punctuation outside) | .*y*. | .*.*. | .* *. | .**. |\n * | 3 (whitespace outside) | x *y* z | x *.* z | x * * z | x ** z |\n * | 4 (nothing outside) | *x* | *.* | * * | ** |\n * ```\n *\n * @param {number} outside\n * Code point on the outer side of the run.\n * @param {number} inside\n * Code point on the inner side of the run.\n * @param {'*' | '_'} marker\n * Marker of the run.\n * Underscores are handled more strictly (they form less often) than\n * asterisks.\n * @returns {EncodeSides}\n * Whether to encode characters.\n */\n// Important: punctuation must never be encoded.\n// Punctuation is solely used by markdown constructs.\n// And by encoding itself.\n// Encoding them will break constructs or double encode things.\nexport function encodeInfo(outside, inside, marker) {\n const outsideKind = classifyCharacter(outside)\n const insideKind = classifyCharacter(inside)\n\n // Letter outside:\n if (outsideKind === undefined) {\n return insideKind === undefined\n ? // Letter inside:\n // we have to encode *both* letters for `_` as it is looser.\n // it already forms for `*` (and GFMs `~`).\n marker === '_'\n ? {inside: true, outside: true}\n : {inside: false, outside: false}\n : insideKind === 1\n ? // Whitespace inside: encode both (letter, whitespace).\n {inside: true, outside: true}\n : // Punctuation inside: encode outer (letter)\n {inside: false, outside: true}\n }\n\n // Whitespace outside:\n if (outsideKind === 1) {\n return insideKind === undefined\n ? // Letter inside: already forms.\n {inside: false, outside: false}\n : insideKind === 1\n ? // Whitespace inside: encode both (whitespace).\n {inside: true, outside: true}\n : // Punctuation inside: already forms.\n {inside: false, outside: false}\n }\n\n // Punctuation outside:\n return insideKind === undefined\n ? // Letter inside: already forms.\n {inside: false, outside: false}\n : insideKind === 1\n ? // Whitespace inside: encode inner (whitespace).\n {inside: true, outside: false}\n : // Punctuation inside: already forms.\n {inside: false, outside: false}\n}\n", "/**\n * @import {Info, State} from 'mdast-util-to-markdown'\n * @import {Emphasis, Parents} from 'mdast'\n */\n\nimport {checkEmphasis} from '../util/check-emphasis.js'\nimport {encodeCharacterReference} from '../util/encode-character-reference.js'\nimport {encodeInfo} from '../util/encode-info.js'\n\nemphasis.peek = emphasisPeek\n\n/**\n * @param {Emphasis} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function emphasis(node, _, state, info) {\n const marker = checkEmphasis(state)\n const exit = state.enter('emphasis')\n const tracker = state.createTracker(info)\n const before = tracker.move(marker)\n\n let between = tracker.move(\n state.containerPhrasing(node, {\n after: marker,\n before,\n ...tracker.current()\n })\n )\n const betweenHead = between.charCodeAt(0)\n const open = encodeInfo(\n info.before.charCodeAt(info.before.length - 1),\n betweenHead,\n marker\n )\n\n if (open.inside) {\n between = encodeCharacterReference(betweenHead) + between.slice(1)\n }\n\n const betweenTail = between.charCodeAt(between.length - 1)\n const close = encodeInfo(info.after.charCodeAt(0), betweenTail, marker)\n\n if (close.inside) {\n between = between.slice(0, -1) + encodeCharacterReference(betweenTail)\n }\n\n const after = tracker.move(marker)\n\n exit()\n\n state.attentionEncodeSurroundingInfo = {\n after: close.outside,\n before: open.outside\n }\n return before + between + after\n}\n\n/**\n * @param {Emphasis} _\n * @param {Parents | undefined} _1\n * @param {State} state\n * @returns {string}\n */\nfunction emphasisPeek(_, _1, state) {\n return state.options.emphasis || '*'\n}\n", "/**\n * @import {State} from 'mdast-util-to-markdown'\n * @import {Heading} from 'mdast'\n */\n\nimport {EXIT, visit} from 'unist-util-visit'\nimport {toString} from 'mdast-util-to-string'\n\n/**\n * @param {Heading} node\n * @param {State} state\n * @returns {boolean}\n */\nexport function formatHeadingAsSetext(node, state) {\n let literalWithBreak = false\n\n // Look for literals with a line break.\n // Note that this also\n visit(node, function (node) {\n if (\n ('value' in node && /\\r?\\n|\\r/.test(node.value)) ||\n node.type === 'break'\n ) {\n literalWithBreak = true\n return EXIT\n }\n })\n\n return Boolean(\n (!node.depth || node.depth < 3) &&\n toString(node) &&\n (state.options.setext || literalWithBreak)\n )\n}\n", "/**\n * @import {Info, State} from 'mdast-util-to-markdown'\n * @import {Heading, Parents} from 'mdast'\n */\n\nimport {encodeCharacterReference} from '../util/encode-character-reference.js'\nimport {formatHeadingAsSetext} from '../util/format-heading-as-setext.js'\n\n/**\n * @param {Heading} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function heading(node, _, state, info) {\n const rank = Math.max(Math.min(6, node.depth || 1), 1)\n const tracker = state.createTracker(info)\n\n if (formatHeadingAsSetext(node, state)) {\n const exit = state.enter('headingSetext')\n const subexit = state.enter('phrasing')\n const value = state.containerPhrasing(node, {\n ...tracker.current(),\n before: '\\n',\n after: '\\n'\n })\n subexit()\n exit()\n\n return (\n value +\n '\\n' +\n (rank === 1 ? '=' : '-').repeat(\n // The whole size\u2026\n value.length -\n // Minus the position of the character after the last EOL (or\n // 0 if there is none)\u2026\n (Math.max(value.lastIndexOf('\\r'), value.lastIndexOf('\\n')) + 1)\n )\n )\n }\n\n const sequence = '#'.repeat(rank)\n const exit = state.enter('headingAtx')\n const subexit = state.enter('phrasing')\n\n // Note: for proper tracking, we should reset the output positions when there\n // is no content returned, because then the space is not output.\n // Practically, in that case, there is no content, so it doesn\u2019t matter that\n // we\u2019ve tracked one too many characters.\n tracker.move(sequence + ' ')\n\n let value = state.containerPhrasing(node, {\n before: '# ',\n after: '\\n',\n ...tracker.current()\n })\n\n if (/^[\\t ]/.test(value)) {\n // To do: what effect has the character reference on tracking?\n value = encodeCharacterReference(value.charCodeAt(0)) + value.slice(1)\n }\n\n value = value ? sequence + ' ' + value : sequence\n\n if (state.options.closeAtx) {\n value += ' ' + sequence\n }\n\n subexit()\n exit()\n\n return value\n}\n", "/**\n * @import {Html} from 'mdast'\n */\n\nhtml.peek = htmlPeek\n\n/**\n * @param {Html} node\n * @returns {string}\n */\nexport function html(node) {\n return node.value || ''\n}\n\n/**\n * @returns {string}\n */\nfunction htmlPeek() {\n return '<'\n}\n", "/**\n * @import {Info, State} from 'mdast-util-to-markdown'\n * @import {Image, Parents} from 'mdast'\n */\n\nimport {checkQuote} from '../util/check-quote.js'\n\nimage.peek = imagePeek\n\n/**\n * @param {Image} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function image(node, _, state, info) {\n const quote = checkQuote(state)\n const suffix = quote === '\"' ? 'Quote' : 'Apostrophe'\n const exit = state.enter('image')\n let subexit = state.enter('label')\n const tracker = state.createTracker(info)\n let value = tracker.move('![')\n value += tracker.move(\n state.safe(node.alt, {before: value, after: ']', ...tracker.current()})\n )\n value += tracker.move('](')\n\n subexit()\n\n if (\n // If there\u2019s no url but there is a title\u2026\n (!node.url && node.title) ||\n // If there are control characters or whitespace.\n /[\\0- \\u007F]/.test(node.url)\n ) {\n subexit = state.enter('destinationLiteral')\n value += tracker.move('<')\n value += tracker.move(\n state.safe(node.url, {before: value, after: '>', ...tracker.current()})\n )\n value += tracker.move('>')\n } else {\n // No whitespace, raw is prettier.\n subexit = state.enter('destinationRaw')\n value += tracker.move(\n state.safe(node.url, {\n before: value,\n after: node.title ? ' ' : ')',\n ...tracker.current()\n })\n )\n }\n\n subexit()\n\n if (node.title) {\n subexit = state.enter(`title${suffix}`)\n value += tracker.move(' ' + quote)\n value += tracker.move(\n state.safe(node.title, {\n before: value,\n after: quote,\n ...tracker.current()\n })\n )\n value += tracker.move(quote)\n subexit()\n }\n\n value += tracker.move(')')\n exit()\n\n return value\n}\n\n/**\n * @returns {string}\n */\nfunction imagePeek() {\n return '!'\n}\n", "/**\n * @import {Info, State} from 'mdast-util-to-markdown'\n * @import {ImageReference, Parents} from 'mdast'\n */\n\nimageReference.peek = imageReferencePeek\n\n/**\n * @param {ImageReference} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function imageReference(node, _, state, info) {\n const type = node.referenceType\n const exit = state.enter('imageReference')\n let subexit = state.enter('label')\n const tracker = state.createTracker(info)\n let value = tracker.move('![')\n const alt = state.safe(node.alt, {\n before: value,\n after: ']',\n ...tracker.current()\n })\n value += tracker.move(alt + '][')\n\n subexit()\n // Hide the fact that we\u2019re in phrasing, because escapes don\u2019t work.\n const stack = state.stack\n state.stack = []\n subexit = state.enter('reference')\n // Note: for proper tracking, we should reset the output positions when we end\n // up making a `shortcut` reference, because then there is no brace output.\n // Practically, in that case, there is no content, so it doesn\u2019t matter that\n // we\u2019ve tracked one too many characters.\n const reference = state.safe(state.associationId(node), {\n before: value,\n after: ']',\n ...tracker.current()\n })\n subexit()\n state.stack = stack\n exit()\n\n if (type === 'full' || !alt || alt !== reference) {\n value += tracker.move(reference + ']')\n } else if (type === 'shortcut') {\n // Remove the unwanted `[`.\n value = value.slice(0, -1)\n } else {\n value += tracker.move(']')\n }\n\n return value\n}\n\n/**\n * @returns {string}\n */\nfunction imageReferencePeek() {\n return '!'\n}\n", "/**\n * @import {State} from 'mdast-util-to-markdown'\n * @import {InlineCode, Parents} from 'mdast'\n */\n\ninlineCode.peek = inlineCodePeek\n\n/**\n * @param {InlineCode} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @returns {string}\n */\nexport function inlineCode(node, _, state) {\n let value = node.value || ''\n let sequence = '`'\n let index = -1\n\n // If there is a single grave accent on its own in the code, use a fence of\n // two.\n // If there are two in a row, use one.\n while (new RegExp('(^|[^`])' + sequence + '([^`]|$)').test(value)) {\n sequence += '`'\n }\n\n // If this is not just spaces or eols (tabs don\u2019t count), and either the\n // first or last character are a space, eol, or tick, then pad with spaces.\n if (\n /[^ \\r\\n]/.test(value) &&\n ((/^[ \\r\\n]/.test(value) && /[ \\r\\n]$/.test(value)) || /^`|`$/.test(value))\n ) {\n value = ' ' + value + ' '\n }\n\n // We have a potential problem: certain characters after eols could result in\n // blocks being seen.\n // For example, if someone injected the string `'\\n# b'`, then that would\n // result in an ATX heading.\n // We can\u2019t escape characters in `inlineCode`, but because eols are\n // transformed to spaces when going from markdown to HTML anyway, we can swap\n // them out.\n while (++index < state.unsafe.length) {\n const pattern = state.unsafe[index]\n const expression = state.compilePattern(pattern)\n /** @type {RegExpExecArray | null} */\n let match\n\n // Only look for `atBreak`s.\n // Btw: note that `atBreak` patterns will always start the regex at LF or\n // CR.\n if (!pattern.atBreak) continue\n\n while ((match = expression.exec(value))) {\n let position = match.index\n\n // Support CRLF (patterns only look for one of the characters).\n if (\n value.charCodeAt(position) === 10 /* `\\n` */ &&\n value.charCodeAt(position - 1) === 13 /* `\\r` */\n ) {\n position--\n }\n\n value = value.slice(0, position) + ' ' + value.slice(match.index + 1)\n }\n }\n\n return sequence + value + sequence\n}\n\n/**\n * @returns {string}\n */\nfunction inlineCodePeek() {\n return '`'\n}\n", "/**\n * @import {State} from 'mdast-util-to-markdown'\n * @import {Link} from 'mdast'\n */\n\nimport {toString} from 'mdast-util-to-string'\n\n/**\n * @param {Link} node\n * @param {State} state\n * @returns {boolean}\n */\nexport function formatLinkAsAutolink(node, state) {\n const raw = toString(node)\n\n return Boolean(\n !state.options.resourceLink &&\n // If there\u2019s a url\u2026\n node.url &&\n // And there\u2019s a no title\u2026\n !node.title &&\n // And the content of `node` is a single text node\u2026\n node.children &&\n node.children.length === 1 &&\n node.children[0].type === 'text' &&\n // And if the url is the same as the content\u2026\n (raw === node.url || 'mailto:' + raw === node.url) &&\n // And that starts w/ a protocol\u2026\n /^[a-z][a-z+.-]+:/i.test(node.url) &&\n // And that doesn\u2019t contain ASCII control codes (character escapes and\n // references don\u2019t work), space, or angle brackets\u2026\n !/[\\0- <>\\u007F]/.test(node.url)\n )\n}\n", "/**\n * @import {Info, State} from 'mdast-util-to-markdown'\n * @import {Link, Parents} from 'mdast'\n * @import {Exit} from '../types.js'\n */\n\nimport {checkQuote} from '../util/check-quote.js'\nimport {formatLinkAsAutolink} from '../util/format-link-as-autolink.js'\n\nlink.peek = linkPeek\n\n/**\n * @param {Link} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function link(node, _, state, info) {\n const quote = checkQuote(state)\n const suffix = quote === '\"' ? 'Quote' : 'Apostrophe'\n const tracker = state.createTracker(info)\n /** @type {Exit} */\n let exit\n /** @type {Exit} */\n let subexit\n\n if (formatLinkAsAutolink(node, state)) {\n // Hide the fact that we\u2019re in phrasing, because escapes don\u2019t work.\n const stack = state.stack\n state.stack = []\n exit = state.enter('autolink')\n let value = tracker.move('<')\n value += tracker.move(\n state.containerPhrasing(node, {\n before: value,\n after: '>',\n ...tracker.current()\n })\n )\n value += tracker.move('>')\n exit()\n state.stack = stack\n return value\n }\n\n exit = state.enter('link')\n subexit = state.enter('label')\n let value = tracker.move('[')\n value += tracker.move(\n state.containerPhrasing(node, {\n before: value,\n after: '](',\n ...tracker.current()\n })\n )\n value += tracker.move('](')\n subexit()\n\n if (\n // If there\u2019s no url but there is a title\u2026\n (!node.url && node.title) ||\n // If there are control characters or whitespace.\n /[\\0- \\u007F]/.test(node.url)\n ) {\n subexit = state.enter('destinationLiteral')\n value += tracker.move('<')\n value += tracker.move(\n state.safe(node.url, {before: value, after: '>', ...tracker.current()})\n )\n value += tracker.move('>')\n } else {\n // No whitespace, raw is prettier.\n subexit = state.enter('destinationRaw')\n value += tracker.move(\n state.safe(node.url, {\n before: value,\n after: node.title ? ' ' : ')',\n ...tracker.current()\n })\n )\n }\n\n subexit()\n\n if (node.title) {\n subexit = state.enter(`title${suffix}`)\n value += tracker.move(' ' + quote)\n value += tracker.move(\n state.safe(node.title, {\n before: value,\n after: quote,\n ...tracker.current()\n })\n )\n value += tracker.move(quote)\n subexit()\n }\n\n value += tracker.move(')')\n\n exit()\n return value\n}\n\n/**\n * @param {Link} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @returns {string}\n */\nfunction linkPeek(node, _, state) {\n return formatLinkAsAutolink(node, state) ? '<' : '['\n}\n", "/**\n * @import {Info, State} from 'mdast-util-to-markdown'\n * @import {LinkReference, Parents} from 'mdast'\n */\n\nlinkReference.peek = linkReferencePeek\n\n/**\n * @param {LinkReference} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function linkReference(node, _, state, info) {\n const type = node.referenceType\n const exit = state.enter('linkReference')\n let subexit = state.enter('label')\n const tracker = state.createTracker(info)\n let value = tracker.move('[')\n const text = state.containerPhrasing(node, {\n before: value,\n after: ']',\n ...tracker.current()\n })\n value += tracker.move(text + '][')\n\n subexit()\n // Hide the fact that we\u2019re in phrasing, because escapes don\u2019t work.\n const stack = state.stack\n state.stack = []\n subexit = state.enter('reference')\n // Note: for proper tracking, we should reset the output positions when we end\n // up making a `shortcut` reference, because then there is no brace output.\n // Practically, in that case, there is no content, so it doesn\u2019t matter that\n // we\u2019ve tracked one too many characters.\n const reference = state.safe(state.associationId(node), {\n before: value,\n after: ']',\n ...tracker.current()\n })\n subexit()\n state.stack = stack\n exit()\n\n if (type === 'full' || !text || text !== reference) {\n value += tracker.move(reference + ']')\n } else if (type === 'shortcut') {\n // Remove the unwanted `[`.\n value = value.slice(0, -1)\n } else {\n value += tracker.move(']')\n }\n\n return value\n}\n\n/**\n * @returns {string}\n */\nfunction linkReferencePeek() {\n return '['\n}\n", "/**\n * @import {Options, State} from 'mdast-util-to-markdown'\n */\n\n/**\n * @param {State} state\n * @returns {Exclude}\n */\nexport function checkBullet(state) {\n const marker = state.options.bullet || '*'\n\n if (marker !== '*' && marker !== '+' && marker !== '-') {\n throw new Error(\n 'Cannot serialize items with `' +\n marker +\n '` for `options.bullet`, expected `*`, `+`, or `-`'\n )\n }\n\n return marker\n}\n", "/**\n * @import {Options, State} from 'mdast-util-to-markdown'\n */\n\nimport {checkBullet} from './check-bullet.js'\n\n/**\n * @param {State} state\n * @returns {Exclude}\n */\nexport function checkBulletOther(state) {\n const bullet = checkBullet(state)\n const bulletOther = state.options.bulletOther\n\n if (!bulletOther) {\n return bullet === '*' ? '-' : '*'\n }\n\n if (bulletOther !== '*' && bulletOther !== '+' && bulletOther !== '-') {\n throw new Error(\n 'Cannot serialize items with `' +\n bulletOther +\n '` for `options.bulletOther`, expected `*`, `+`, or `-`'\n )\n }\n\n if (bulletOther === bullet) {\n throw new Error(\n 'Expected `bullet` (`' +\n bullet +\n '`) and `bulletOther` (`' +\n bulletOther +\n '`) to be different'\n )\n }\n\n return bulletOther\n}\n", "/**\n * @import {Options, State} from 'mdast-util-to-markdown'\n */\n\n/**\n * @param {State} state\n * @returns {Exclude}\n */\nexport function checkBulletOrdered(state) {\n const marker = state.options.bulletOrdered || '.'\n\n if (marker !== '.' && marker !== ')') {\n throw new Error(\n 'Cannot serialize items with `' +\n marker +\n '` for `options.bulletOrdered`, expected `.` or `)`'\n )\n }\n\n return marker\n}\n", "/**\n * @import {Options, State} from 'mdast-util-to-markdown'\n */\n\n/**\n * @param {State} state\n * @returns {Exclude}\n */\nexport function checkRule(state) {\n const marker = state.options.rule || '*'\n\n if (marker !== '*' && marker !== '-' && marker !== '_') {\n throw new Error(\n 'Cannot serialize rules with `' +\n marker +\n '` for `options.rule`, expected `*`, `-`, or `_`'\n )\n }\n\n return marker\n}\n", "/**\n * @import {Info, State} from 'mdast-util-to-markdown'\n * @import {List, Parents} from 'mdast'\n */\n\nimport {checkBullet} from '../util/check-bullet.js'\nimport {checkBulletOther} from '../util/check-bullet-other.js'\nimport {checkBulletOrdered} from '../util/check-bullet-ordered.js'\nimport {checkRule} from '../util/check-rule.js'\n\n/**\n * @param {List} node\n * @param {Parents | undefined} parent\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function list(node, parent, state, info) {\n const exit = state.enter('list')\n const bulletCurrent = state.bulletCurrent\n /** @type {string} */\n let bullet = node.ordered ? checkBulletOrdered(state) : checkBullet(state)\n /** @type {string} */\n const bulletOther = node.ordered\n ? bullet === '.'\n ? ')'\n : '.'\n : checkBulletOther(state)\n let useDifferentMarker =\n parent && state.bulletLastUsed ? bullet === state.bulletLastUsed : false\n\n if (!node.ordered) {\n const firstListItem = node.children ? node.children[0] : undefined\n\n // If there\u2019s an empty first list item directly in two list items,\n // we have to use a different bullet:\n //\n // ```markdown\n // * - *\n // ```\n //\n // \u2026because otherwise it would become one big thematic break.\n if (\n // Bullet could be used as a thematic break marker:\n (bullet === '*' || bullet === '-') &&\n // Empty first list item:\n firstListItem &&\n (!firstListItem.children || !firstListItem.children[0]) &&\n // Directly in two other list items:\n state.stack[state.stack.length - 1] === 'list' &&\n state.stack[state.stack.length - 2] === 'listItem' &&\n state.stack[state.stack.length - 3] === 'list' &&\n state.stack[state.stack.length - 4] === 'listItem' &&\n // That are each the first child.\n state.indexStack[state.indexStack.length - 1] === 0 &&\n state.indexStack[state.indexStack.length - 2] === 0 &&\n state.indexStack[state.indexStack.length - 3] === 0\n ) {\n useDifferentMarker = true\n }\n\n // If there\u2019s a thematic break at the start of the first list item,\n // we have to use a different bullet:\n //\n // ```markdown\n // * ---\n // ```\n //\n // \u2026because otherwise it would become one big thematic break.\n if (checkRule(state) === bullet && firstListItem) {\n let index = -1\n\n while (++index < node.children.length) {\n const item = node.children[index]\n\n if (\n item &&\n item.type === 'listItem' &&\n item.children &&\n item.children[0] &&\n item.children[0].type === 'thematicBreak'\n ) {\n useDifferentMarker = true\n break\n }\n }\n }\n }\n\n if (useDifferentMarker) {\n bullet = bulletOther\n }\n\n state.bulletCurrent = bullet\n const value = state.containerFlow(node, info)\n state.bulletLastUsed = bullet\n state.bulletCurrent = bulletCurrent\n exit()\n return value\n}\n", "/**\n * @import {Options, State} from 'mdast-util-to-markdown'\n */\n\n/**\n * @param {State} state\n * @returns {Exclude}\n */\nexport function checkListItemIndent(state) {\n const style = state.options.listItemIndent || 'one'\n\n if (style !== 'tab' && style !== 'one' && style !== 'mixed') {\n throw new Error(\n 'Cannot serialize items with `' +\n style +\n '` for `options.listItemIndent`, expected `tab`, `one`, or `mixed`'\n )\n }\n\n return style\n}\n", "/**\n * @import {Info, Map, State} from 'mdast-util-to-markdown'\n * @import {ListItem, Parents} from 'mdast'\n */\n\nimport {checkBullet} from '../util/check-bullet.js'\nimport {checkListItemIndent} from '../util/check-list-item-indent.js'\n\n/**\n * @param {ListItem} node\n * @param {Parents | undefined} parent\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function listItem(node, parent, state, info) {\n const listItemIndent = checkListItemIndent(state)\n let bullet = state.bulletCurrent || checkBullet(state)\n\n // Add the marker value for ordered lists.\n if (parent && parent.type === 'list' && parent.ordered) {\n bullet =\n (typeof parent.start === 'number' && parent.start > -1\n ? parent.start\n : 1) +\n (state.options.incrementListMarker === false\n ? 0\n : parent.children.indexOf(node)) +\n bullet\n }\n\n let size = bullet.length + 1\n\n if (\n listItemIndent === 'tab' ||\n (listItemIndent === 'mixed' &&\n ((parent && parent.type === 'list' && parent.spread) || node.spread))\n ) {\n size = Math.ceil(size / 4) * 4\n }\n\n const tracker = state.createTracker(info)\n tracker.move(bullet + ' '.repeat(size - bullet.length))\n tracker.shift(size)\n const exit = state.enter('listItem')\n const value = state.indentLines(\n state.containerFlow(node, tracker.current()),\n map\n )\n exit()\n\n return value\n\n /** @type {Map} */\n function map(line, index, blank) {\n if (index) {\n return (blank ? '' : ' '.repeat(size)) + line\n }\n\n return (blank ? bullet : bullet + ' '.repeat(size - bullet.length)) + line\n }\n}\n", "/**\n * @import {Info, State} from 'mdast-util-to-markdown'\n * @import {Paragraph, Parents} from 'mdast'\n */\n\n/**\n * @param {Paragraph} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function paragraph(node, _, state, info) {\n const exit = state.enter('paragraph')\n const subexit = state.enter('phrasing')\n const value = state.containerPhrasing(node, info)\n subexit()\n exit()\n return value\n}\n", "/**\n * @typedef {import('mdast').Html} Html\n * @typedef {import('mdast').PhrasingContent} PhrasingContent\n */\n\nimport {convert} from 'unist-util-is'\n\n/**\n * Check if the given value is *phrasing content*.\n *\n * > \uD83D\uDC49 **Note**: Excludes `html`, which can be both phrasing or flow.\n *\n * @param node\n * Thing to check, typically `Node`.\n * @returns\n * Whether `value` is phrasing content.\n */\n\nexport const phrasing =\n /** @type {(node?: unknown) => node is Exclude} */\n (\n convert([\n 'break',\n 'delete',\n 'emphasis',\n // To do: next major: removed since footnotes were added to GFM.\n 'footnote',\n 'footnoteReference',\n 'image',\n 'imageReference',\n 'inlineCode',\n // Enabled by `mdast-util-math`:\n 'inlineMath',\n 'link',\n 'linkReference',\n // Enabled by `mdast-util-mdx`:\n 'mdxJsxTextElement',\n // Enabled by `mdast-util-mdx`:\n 'mdxTextExpression',\n 'strong',\n 'text',\n // Enabled by `mdast-util-directive`:\n 'textDirective'\n ])\n )\n", "/**\n * @import {Info, State} from 'mdast-util-to-markdown'\n * @import {Parents, Root} from 'mdast'\n */\n\nimport {phrasing} from 'mdast-util-phrasing'\n\n/**\n * @param {Root} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function root(node, _, state, info) {\n // Note: `html` nodes are ambiguous.\n const hasPhrasing = node.children.some(function (d) {\n return phrasing(d)\n })\n\n const container = hasPhrasing ? state.containerPhrasing : state.containerFlow\n return container.call(state, node, info)\n}\n", "/**\n * @import {Options, State} from 'mdast-util-to-markdown'\n */\n\n/**\n * @param {State} state\n * @returns {Exclude}\n */\nexport function checkStrong(state) {\n const marker = state.options.strong || '*'\n\n if (marker !== '*' && marker !== '_') {\n throw new Error(\n 'Cannot serialize strong with `' +\n marker +\n '` for `options.strong`, expected `*`, or `_`'\n )\n }\n\n return marker\n}\n", "/**\n * @import {Info, State} from 'mdast-util-to-markdown'\n * @import {Parents, Strong} from 'mdast'\n */\n\nimport {checkStrong} from '../util/check-strong.js'\nimport {encodeCharacterReference} from '../util/encode-character-reference.js'\nimport {encodeInfo} from '../util/encode-info.js'\n\nstrong.peek = strongPeek\n\n/**\n * @param {Strong} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function strong(node, _, state, info) {\n const marker = checkStrong(state)\n const exit = state.enter('strong')\n const tracker = state.createTracker(info)\n const before = tracker.move(marker + marker)\n\n let between = tracker.move(\n state.containerPhrasing(node, {\n after: marker,\n before,\n ...tracker.current()\n })\n )\n const betweenHead = between.charCodeAt(0)\n const open = encodeInfo(\n info.before.charCodeAt(info.before.length - 1),\n betweenHead,\n marker\n )\n\n if (open.inside) {\n between = encodeCharacterReference(betweenHead) + between.slice(1)\n }\n\n const betweenTail = between.charCodeAt(between.length - 1)\n const close = encodeInfo(info.after.charCodeAt(0), betweenTail, marker)\n\n if (close.inside) {\n between = between.slice(0, -1) + encodeCharacterReference(betweenTail)\n }\n\n const after = tracker.move(marker + marker)\n\n exit()\n\n state.attentionEncodeSurroundingInfo = {\n after: close.outside,\n before: open.outside\n }\n return before + between + after\n}\n\n/**\n * @param {Strong} _\n * @param {Parents | undefined} _1\n * @param {State} state\n * @returns {string}\n */\nfunction strongPeek(_, _1, state) {\n return state.options.strong || '*'\n}\n", "/**\n * @import {Info, State} from 'mdast-util-to-markdown'\n * @import {Parents, Text} from 'mdast'\n */\n\n/**\n * @param {Text} node\n * @param {Parents | undefined} _\n * @param {State} state\n * @param {Info} info\n * @returns {string}\n */\nexport function text(node, _, state, info) {\n return state.safe(node.value, info)\n}\n", "/**\n * @import {Options, State} from 'mdast-util-to-markdown'\n */\n\n/**\n * @param {State} state\n * @returns {Exclude}\n */\nexport function checkRuleRepetition(state) {\n const repetition = state.options.ruleRepetition || 3\n\n if (repetition < 3) {\n throw new Error(\n 'Cannot serialize rules with repetition `' +\n repetition +\n '` for `options.ruleRepetition`, expected `3` or more'\n )\n }\n\n return repetition\n}\n", "/**\n * @import {State} from 'mdast-util-to-markdown'\n * @import {Parents, ThematicBreak} from 'mdast'\n */\n\nimport {checkRuleRepetition} from '../util/check-rule-repetition.js'\nimport {checkRule} from '../util/check-rule.js'\n\n/**\n * @param {ThematicBreak} _\n * @param {Parents | undefined} _1\n * @param {State} state\n * @returns {string}\n */\nexport function thematicBreak(_, _1, state) {\n const value = (\n checkRule(state) + (state.options.ruleSpaces ? ' ' : '')\n ).repeat(checkRuleRepetition(state))\n\n return state.options.ruleSpaces ? value.slice(0, -1) : value\n}\n", "import {blockquote} from './blockquote.js'\nimport {hardBreak} from './break.js'\nimport {code} from './code.js'\nimport {definition} from './definition.js'\nimport {emphasis} from './emphasis.js'\nimport {heading} from './heading.js'\nimport {html} from './html.js'\nimport {image} from './image.js'\nimport {imageReference} from './image-reference.js'\nimport {inlineCode} from './inline-code.js'\nimport {link} from './link.js'\nimport {linkReference} from './link-reference.js'\nimport {list} from './list.js'\nimport {listItem} from './list-item.js'\nimport {paragraph} from './paragraph.js'\nimport {root} from './root.js'\nimport {strong} from './strong.js'\nimport {text} from './text.js'\nimport {thematicBreak} from './thematic-break.js'\n\n/**\n * Default (CommonMark) handlers.\n */\nexport const handle = {\n blockquote,\n break: hardBreak,\n code,\n definition,\n emphasis,\n hardBreak,\n heading,\n html,\n image,\n imageReference,\n inlineCode,\n link,\n linkReference,\n list,\n listItem,\n paragraph,\n root,\n strong,\n text,\n thematicBreak\n}\n", "/**\n * @typedef {import('mdast').InlineCode} InlineCode\n * @typedef {import('mdast').Table} Table\n * @typedef {import('mdast').TableCell} TableCell\n * @typedef {import('mdast').TableRow} TableRow\n *\n * @typedef {import('markdown-table').Options} MarkdownTableOptions\n *\n * @typedef {import('mdast-util-from-markdown').CompileContext} CompileContext\n * @typedef {import('mdast-util-from-markdown').Extension} FromMarkdownExtension\n * @typedef {import('mdast-util-from-markdown').Handle} FromMarkdownHandle\n *\n * @typedef {import('mdast-util-to-markdown').Options} ToMarkdownExtension\n * @typedef {import('mdast-util-to-markdown').Handle} ToMarkdownHandle\n * @typedef {import('mdast-util-to-markdown').State} State\n * @typedef {import('mdast-util-to-markdown').Info} Info\n */\n\n/**\n * @typedef Options\n * Configuration.\n * @property {boolean | null | undefined} [tableCellPadding=true]\n * Whether to add a space of padding between delimiters and cells (default:\n * `true`).\n * @property {boolean | null | undefined} [tablePipeAlign=true]\n * Whether to align the delimiters (default: `true`).\n * @property {MarkdownTableOptions['stringLength'] | null | undefined} [stringLength]\n * Function to detect the length of table cell content, used when aligning\n * the delimiters between cells (optional).\n */\n\nimport {ok as assert} from 'devlop'\nimport {markdownTable} from 'markdown-table'\nimport {defaultHandlers} from 'mdast-util-to-markdown'\n\n/**\n * Create an extension for `mdast-util-from-markdown` to enable GFM tables in\n * markdown.\n *\n * @returns {FromMarkdownExtension}\n * Extension for `mdast-util-from-markdown` to enable GFM tables.\n */\nexport function gfmTableFromMarkdown() {\n return {\n enter: {\n table: enterTable,\n tableData: enterCell,\n tableHeader: enterCell,\n tableRow: enterRow\n },\n exit: {\n codeText: exitCodeText,\n table: exitTable,\n tableData: exit,\n tableHeader: exit,\n tableRow: exit\n }\n }\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction enterTable(token) {\n const align = token._align\n assert(align, 'expected `_align` on table')\n this.enter(\n {\n type: 'table',\n align: align.map(function (d) {\n return d === 'none' ? null : d\n }),\n children: []\n },\n token\n )\n this.data.inTable = true\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitTable(token) {\n this.exit(token)\n this.data.inTable = undefined\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction enterRow(token) {\n this.enter({type: 'tableRow', children: []}, token)\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exit(token) {\n this.exit(token)\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction enterCell(token) {\n this.enter({type: 'tableCell', children: []}, token)\n}\n\n// Overwrite the default code text data handler to unescape escaped pipes when\n// they are in tables.\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitCodeText(token) {\n let value = this.resume()\n\n if (this.data.inTable) {\n value = value.replace(/\\\\([\\\\|])/g, replace)\n }\n\n const node = this.stack[this.stack.length - 1]\n assert(node.type === 'inlineCode')\n node.value = value\n this.exit(token)\n}\n\n/**\n * @param {string} $0\n * @param {string} $1\n * @returns {string}\n */\nfunction replace($0, $1) {\n // Pipes work, backslashes don\u2019t (but can\u2019t escape pipes).\n return $1 === '|' ? $1 : $0\n}\n\n/**\n * Create an extension for `mdast-util-to-markdown` to enable GFM tables in\n * markdown.\n *\n * @param {Options | null | undefined} [options]\n * Configuration.\n * @returns {ToMarkdownExtension}\n * Extension for `mdast-util-to-markdown` to enable GFM tables.\n */\nexport function gfmTableToMarkdown(options) {\n const settings = options || {}\n const padding = settings.tableCellPadding\n const alignDelimiters = settings.tablePipeAlign\n const stringLength = settings.stringLength\n const around = padding ? ' ' : '|'\n\n return {\n unsafe: [\n {character: '\\r', inConstruct: 'tableCell'},\n {character: '\\n', inConstruct: 'tableCell'},\n // A pipe, when followed by a tab or space (padding), or a dash or colon\n // (unpadded delimiter row), could result in a table.\n {atBreak: true, character: '|', after: '[\\t :-]'},\n // A pipe in a cell must be encoded.\n {character: '|', inConstruct: 'tableCell'},\n // A colon must be followed by a dash, in which case it could start a\n // delimiter row.\n {atBreak: true, character: ':', after: '-'},\n // A delimiter row can also start with a dash, when followed by more\n // dashes, a colon, or a pipe.\n // This is a stricter version than the built in check for lists, thematic\n // breaks, and setex heading underlines though:\n // \n {atBreak: true, character: '-', after: '[:|-]'}\n ],\n handlers: {\n inlineCode: inlineCodeWithTable,\n table: handleTable,\n tableCell: handleTableCell,\n tableRow: handleTableRow\n }\n }\n\n /**\n * @type {ToMarkdownHandle}\n * @param {Table} node\n */\n function handleTable(node, _, state, info) {\n return serializeData(handleTableAsData(node, state, info), node.align)\n }\n\n /**\n * This function isn\u2019t really used normally, because we handle rows at the\n * table level.\n * But, if someone passes in a table row, this ensures we make somewhat sense.\n *\n * @type {ToMarkdownHandle}\n * @param {TableRow} node\n */\n function handleTableRow(node, _, state, info) {\n const row = handleTableRowAsData(node, state, info)\n const value = serializeData([row])\n // `markdown-table` will always add an align row\n return value.slice(0, value.indexOf('\\n'))\n }\n\n /**\n * @type {ToMarkdownHandle}\n * @param {TableCell} node\n */\n function handleTableCell(node, _, state, info) {\n const exit = state.enter('tableCell')\n const subexit = state.enter('phrasing')\n const value = state.containerPhrasing(node, {\n ...info,\n before: around,\n after: around\n })\n subexit()\n exit()\n return value\n }\n\n /**\n * @param {Array>} matrix\n * @param {Array | null | undefined} [align]\n */\n function serializeData(matrix, align) {\n return markdownTable(matrix, {\n align,\n // @ts-expect-error: `markdown-table` types should support `null`.\n alignDelimiters,\n // @ts-expect-error: `markdown-table` types should support `null`.\n padding,\n // @ts-expect-error: `markdown-table` types should support `null`.\n stringLength\n })\n }\n\n /**\n * @param {Table} node\n * @param {State} state\n * @param {Info} info\n */\n function handleTableAsData(node, state, info) {\n const children = node.children\n let index = -1\n /** @type {Array>} */\n const result = []\n const subexit = state.enter('table')\n\n while (++index < children.length) {\n result[index] = handleTableRowAsData(children[index], state, info)\n }\n\n subexit()\n\n return result\n }\n\n /**\n * @param {TableRow} node\n * @param {State} state\n * @param {Info} info\n */\n function handleTableRowAsData(node, state, info) {\n const children = node.children\n let index = -1\n /** @type {Array} */\n const result = []\n const subexit = state.enter('tableRow')\n\n while (++index < children.length) {\n // Note: the positional info as used here is incorrect.\n // Making it correct would be impossible due to aligning cells?\n // And it would need copy/pasting `markdown-table` into this project.\n result[index] = handleTableCell(children[index], node, state, info)\n }\n\n subexit()\n\n return result\n }\n\n /**\n * @type {ToMarkdownHandle}\n * @param {InlineCode} node\n */\n function inlineCodeWithTable(node, parent, state) {\n let value = defaultHandlers.inlineCode(node, parent, state)\n\n if (state.stack.includes('tableCell')) {\n value = value.replace(/\\|/g, '\\\\$&')\n }\n\n return value\n }\n}\n", "/**\n * @typedef {import('mdast').ListItem} ListItem\n * @typedef {import('mdast').Paragraph} Paragraph\n * @typedef {import('mdast-util-from-markdown').CompileContext} CompileContext\n * @typedef {import('mdast-util-from-markdown').Extension} FromMarkdownExtension\n * @typedef {import('mdast-util-from-markdown').Handle} FromMarkdownHandle\n * @typedef {import('mdast-util-to-markdown').Options} ToMarkdownExtension\n * @typedef {import('mdast-util-to-markdown').Handle} ToMarkdownHandle\n */\n\nimport {ok as assert} from 'devlop'\nimport {defaultHandlers} from 'mdast-util-to-markdown'\n\n/**\n * Create an extension for `mdast-util-from-markdown` to enable GFM task\n * list items in markdown.\n *\n * @returns {FromMarkdownExtension}\n * Extension for `mdast-util-from-markdown` to enable GFM task list items.\n */\nexport function gfmTaskListItemFromMarkdown() {\n return {\n exit: {\n taskListCheckValueChecked: exitCheck,\n taskListCheckValueUnchecked: exitCheck,\n paragraph: exitParagraphWithTaskListItem\n }\n }\n}\n\n/**\n * Create an extension for `mdast-util-to-markdown` to enable GFM task list\n * items in markdown.\n *\n * @returns {ToMarkdownExtension}\n * Extension for `mdast-util-to-markdown` to enable GFM task list items.\n */\nexport function gfmTaskListItemToMarkdown() {\n return {\n unsafe: [{atBreak: true, character: '-', after: '[:|-]'}],\n handlers: {listItem: listItemWithTaskListItem}\n }\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitCheck(token) {\n // We\u2019re always in a paragraph, in a list item.\n const node = this.stack[this.stack.length - 2]\n assert(node.type === 'listItem')\n node.checked = token.type === 'taskListCheckValueChecked'\n}\n\n/**\n * @this {CompileContext}\n * @type {FromMarkdownHandle}\n */\nfunction exitParagraphWithTaskListItem(token) {\n const parent = this.stack[this.stack.length - 2]\n\n if (\n parent &&\n parent.type === 'listItem' &&\n typeof parent.checked === 'boolean'\n ) {\n const node = this.stack[this.stack.length - 1]\n assert(node.type === 'paragraph')\n const head = node.children[0]\n\n if (head && head.type === 'text') {\n const siblings = parent.children\n let index = -1\n /** @type {Paragraph | undefined} */\n let firstParaghraph\n\n while (++index < siblings.length) {\n const sibling = siblings[index]\n if (sibling.type === 'paragraph') {\n firstParaghraph = sibling\n break\n }\n }\n\n if (firstParaghraph === node) {\n // Must start with a space or a tab.\n head.value = head.value.slice(1)\n\n if (head.value.length === 0) {\n node.children.shift()\n } else if (\n node.position &&\n head.position &&\n typeof head.position.start.offset === 'number'\n ) {\n head.position.start.column++\n head.position.start.offset++\n node.position.start = Object.assign({}, head.position.start)\n }\n }\n }\n }\n\n this.exit(token)\n}\n\n/**\n * @type {ToMarkdownHandle}\n * @param {ListItem} node\n */\nfunction listItemWithTaskListItem(node, parent, state, info) {\n const head = node.children[0]\n const checkable =\n typeof node.checked === 'boolean' && head && head.type === 'paragraph'\n const checkbox = '[' + (node.checked ? 'x' : ' ') + '] '\n const tracker = state.createTracker(info)\n\n if (checkable) {\n tracker.move(checkbox)\n }\n\n let value = defaultHandlers.listItem(node, parent, state, {\n ...info,\n ...tracker.current()\n })\n\n if (checkable) {\n value = value.replace(/^(?:[*+-]|\\d+\\.)([\\r\\n]| {1,3})/, check)\n }\n\n return value\n\n /**\n * @param {string} $0\n * @returns {string}\n */\n function check($0) {\n return $0 + checkbox\n }\n}\n", "/**\n * @import {Extension as FromMarkdownExtension} from 'mdast-util-from-markdown'\n * @import {Options} from 'mdast-util-gfm'\n * @import {Options as ToMarkdownExtension} from 'mdast-util-to-markdown'\n */\n\nimport {\n gfmAutolinkLiteralFromMarkdown,\n gfmAutolinkLiteralToMarkdown\n} from 'mdast-util-gfm-autolink-literal'\nimport {\n gfmFootnoteFromMarkdown,\n gfmFootnoteToMarkdown\n} from 'mdast-util-gfm-footnote'\nimport {\n gfmStrikethroughFromMarkdown,\n gfmStrikethroughToMarkdown\n} from 'mdast-util-gfm-strikethrough'\nimport {gfmTableFromMarkdown, gfmTableToMarkdown} from 'mdast-util-gfm-table'\nimport {\n gfmTaskListItemFromMarkdown,\n gfmTaskListItemToMarkdown\n} from 'mdast-util-gfm-task-list-item'\n\n/**\n * Create an extension for `mdast-util-from-markdown` to enable GFM (autolink\n * literals, footnotes, strikethrough, tables, tasklists).\n *\n * @returns {Array}\n * Extension for `mdast-util-from-markdown` to enable GFM (autolink literals,\n * footnotes, strikethrough, tables, tasklists).\n */\nexport function gfmFromMarkdown() {\n return [\n gfmAutolinkLiteralFromMarkdown(),\n gfmFootnoteFromMarkdown(),\n gfmStrikethroughFromMarkdown(),\n gfmTableFromMarkdown(),\n gfmTaskListItemFromMarkdown()\n ]\n}\n\n/**\n * Create an extension for `mdast-util-to-markdown` to enable GFM (autolink\n * literals, footnotes, strikethrough, tables, tasklists).\n *\n * @param {Options | null | undefined} [options]\n * Configuration (optional).\n * @returns {ToMarkdownExtension}\n * Extension for `mdast-util-to-markdown` to enable GFM (autolink literals,\n * footnotes, strikethrough, tables, tasklists).\n */\nexport function gfmToMarkdown(options) {\n return {\n extensions: [\n gfmAutolinkLiteralToMarkdown(),\n gfmFootnoteToMarkdown(options),\n gfmStrikethroughToMarkdown(),\n gfmTableToMarkdown(options),\n gfmTaskListItemToMarkdown()\n ]\n }\n}\n", "/**\n * @import {Code, ConstructRecord, Event, Extension, Previous, State, TokenizeContext, Tokenizer} from 'micromark-util-types'\n */\n\nimport { asciiAlpha, asciiAlphanumeric, asciiControl, markdownLineEndingOrSpace, unicodePunctuation, unicodeWhitespace } from 'micromark-util-character';\nconst wwwPrefix = {\n tokenize: tokenizeWwwPrefix,\n partial: true\n};\nconst domain = {\n tokenize: tokenizeDomain,\n partial: true\n};\nconst path = {\n tokenize: tokenizePath,\n partial: true\n};\nconst trail = {\n tokenize: tokenizeTrail,\n partial: true\n};\nconst emailDomainDotTrail = {\n tokenize: tokenizeEmailDomainDotTrail,\n partial: true\n};\nconst wwwAutolink = {\n name: 'wwwAutolink',\n tokenize: tokenizeWwwAutolink,\n previous: previousWww\n};\nconst protocolAutolink = {\n name: 'protocolAutolink',\n tokenize: tokenizeProtocolAutolink,\n previous: previousProtocol\n};\nconst emailAutolink = {\n name: 'emailAutolink',\n tokenize: tokenizeEmailAutolink,\n previous: previousEmail\n};\n\n/** @type {ConstructRecord} */\nconst text = {};\n\n/**\n * Create an extension for `micromark` to support GitHub autolink literal\n * syntax.\n *\n * @returns {Extension}\n * Extension for `micromark` that can be passed in `extensions` to enable GFM\n * autolink literal syntax.\n */\nexport function gfmAutolinkLiteral() {\n return {\n text\n };\n}\n\n/** @type {Code} */\nlet code = 48;\n\n// Add alphanumerics.\nwhile (code < 123) {\n text[code] = emailAutolink;\n code++;\n if (code === 58) code = 65;else if (code === 91) code = 97;\n}\ntext[43] = emailAutolink;\ntext[45] = emailAutolink;\ntext[46] = emailAutolink;\ntext[95] = emailAutolink;\ntext[72] = [emailAutolink, protocolAutolink];\ntext[104] = [emailAutolink, protocolAutolink];\ntext[87] = [emailAutolink, wwwAutolink];\ntext[119] = [emailAutolink, wwwAutolink];\n\n// To do: perform email autolink literals on events, afterwards.\n// That\u2019s where `markdown-rs` and `cmark-gfm` perform it.\n// It should look for `@`, then for atext backwards, and then for a label\n// forwards.\n// To do: `mailto:`, `xmpp:` protocol as prefix.\n\n/**\n * Email autolink literal.\n *\n * ```markdown\n * > | a contact@example.org b\n * ^^^^^^^^^^^^^^^^^^^\n * ```\n *\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeEmailAutolink(effects, ok, nok) {\n const self = this;\n /** @type {boolean | undefined} */\n let dot;\n /** @type {boolean} */\n let data;\n return start;\n\n /**\n * Start of email autolink literal.\n *\n * ```markdown\n * > | a contact@example.org b\n * ^\n * ```\n *\n * @type {State}\n */\n function start(code) {\n if (!gfmAtext(code) || !previousEmail.call(self, self.previous) || previousUnbalanced(self.events)) {\n return nok(code);\n }\n effects.enter('literalAutolink');\n effects.enter('literalAutolinkEmail');\n return atext(code);\n }\n\n /**\n * In email atext.\n *\n * ```markdown\n * > | a contact@example.org b\n * ^\n * ```\n *\n * @type {State}\n */\n function atext(code) {\n if (gfmAtext(code)) {\n effects.consume(code);\n return atext;\n }\n if (code === 64) {\n effects.consume(code);\n return emailDomain;\n }\n return nok(code);\n }\n\n /**\n * In email domain.\n *\n * The reference code is a bit overly complex as it handles the `@`, of which\n * there may be just one.\n * Source: \n *\n * ```markdown\n * > | a contact@example.org b\n * ^\n * ```\n *\n * @type {State}\n */\n function emailDomain(code) {\n // Dot followed by alphanumerical (not `-` or `_`).\n if (code === 46) {\n return effects.check(emailDomainDotTrail, emailDomainAfter, emailDomainDot)(code);\n }\n\n // Alphanumerical, `-`, and `_`.\n if (code === 45 || code === 95 || asciiAlphanumeric(code)) {\n data = true;\n effects.consume(code);\n return emailDomain;\n }\n\n // To do: `/` if xmpp.\n\n // Note: normally we\u2019d truncate trailing punctuation from the link.\n // However, email autolink literals cannot contain any of those markers,\n // except for `.`, but that can only occur if it isn\u2019t trailing.\n // So we can ignore truncating!\n return emailDomainAfter(code);\n }\n\n /**\n * In email domain, on dot that is not a trail.\n *\n * ```markdown\n * > | a contact@example.org b\n * ^\n * ```\n *\n * @type {State}\n */\n function emailDomainDot(code) {\n effects.consume(code);\n dot = true;\n return emailDomain;\n }\n\n /**\n * After email domain.\n *\n * ```markdown\n * > | a contact@example.org b\n * ^\n * ```\n *\n * @type {State}\n */\n function emailDomainAfter(code) {\n // Domain must not be empty, must include a dot, and must end in alphabetical.\n // Source: .\n if (data && dot && asciiAlpha(self.previous)) {\n effects.exit('literalAutolinkEmail');\n effects.exit('literalAutolink');\n return ok(code);\n }\n return nok(code);\n }\n}\n\n/**\n * `www` autolink literal.\n *\n * ```markdown\n * > | a www.example.org b\n * ^^^^^^^^^^^^^^^\n * ```\n *\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeWwwAutolink(effects, ok, nok) {\n const self = this;\n return wwwStart;\n\n /**\n * Start of www autolink literal.\n *\n * ```markdown\n * > | www.example.com/a?b#c\n * ^\n * ```\n *\n * @type {State}\n */\n function wwwStart(code) {\n if (code !== 87 && code !== 119 || !previousWww.call(self, self.previous) || previousUnbalanced(self.events)) {\n return nok(code);\n }\n effects.enter('literalAutolink');\n effects.enter('literalAutolinkWww');\n // Note: we *check*, so we can discard the `www.` we parsed.\n // If it worked, we consider it as a part of the domain.\n return effects.check(wwwPrefix, effects.attempt(domain, effects.attempt(path, wwwAfter), nok), nok)(code);\n }\n\n /**\n * After a www autolink literal.\n *\n * ```markdown\n * > | www.example.com/a?b#c\n * ^\n * ```\n *\n * @type {State}\n */\n function wwwAfter(code) {\n effects.exit('literalAutolinkWww');\n effects.exit('literalAutolink');\n return ok(code);\n }\n}\n\n/**\n * Protocol autolink literal.\n *\n * ```markdown\n * > | a https://example.org b\n * ^^^^^^^^^^^^^^^^^^^\n * ```\n *\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeProtocolAutolink(effects, ok, nok) {\n const self = this;\n let buffer = '';\n let seen = false;\n return protocolStart;\n\n /**\n * Start of protocol autolink literal.\n *\n * ```markdown\n * > | https://example.com/a?b#c\n * ^\n * ```\n *\n * @type {State}\n */\n function protocolStart(code) {\n if ((code === 72 || code === 104) && previousProtocol.call(self, self.previous) && !previousUnbalanced(self.events)) {\n effects.enter('literalAutolink');\n effects.enter('literalAutolinkHttp');\n buffer += String.fromCodePoint(code);\n effects.consume(code);\n return protocolPrefixInside;\n }\n return nok(code);\n }\n\n /**\n * In protocol.\n *\n * ```markdown\n * > | https://example.com/a?b#c\n * ^^^^^\n * ```\n *\n * @type {State}\n */\n function protocolPrefixInside(code) {\n // `5` is size of `https`\n if (asciiAlpha(code) && buffer.length < 5) {\n // @ts-expect-error: definitely number.\n buffer += String.fromCodePoint(code);\n effects.consume(code);\n return protocolPrefixInside;\n }\n if (code === 58) {\n const protocol = buffer.toLowerCase();\n if (protocol === 'http' || protocol === 'https') {\n effects.consume(code);\n return protocolSlashesInside;\n }\n }\n return nok(code);\n }\n\n /**\n * In slashes.\n *\n * ```markdown\n * > | https://example.com/a?b#c\n * ^^\n * ```\n *\n * @type {State}\n */\n function protocolSlashesInside(code) {\n if (code === 47) {\n effects.consume(code);\n if (seen) {\n return afterProtocol;\n }\n seen = true;\n return protocolSlashesInside;\n }\n return nok(code);\n }\n\n /**\n * After protocol, before domain.\n *\n * ```markdown\n * > | https://example.com/a?b#c\n * ^\n * ```\n *\n * @type {State}\n */\n function afterProtocol(code) {\n // To do: this is different from `markdown-rs`:\n // https://github.com/wooorm/markdown-rs/blob/b3a921c761309ae00a51fe348d8a43adbc54b518/src/construct/gfm_autolink_literal.rs#L172-L182\n return code === null || asciiControl(code) || markdownLineEndingOrSpace(code) || unicodeWhitespace(code) || unicodePunctuation(code) ? nok(code) : effects.attempt(domain, effects.attempt(path, protocolAfter), nok)(code);\n }\n\n /**\n * After a protocol autolink literal.\n *\n * ```markdown\n * > | https://example.com/a?b#c\n * ^\n * ```\n *\n * @type {State}\n */\n function protocolAfter(code) {\n effects.exit('literalAutolinkHttp');\n effects.exit('literalAutolink');\n return ok(code);\n }\n}\n\n/**\n * `www` prefix.\n *\n * ```markdown\n * > | a www.example.org b\n * ^^^^\n * ```\n *\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeWwwPrefix(effects, ok, nok) {\n let size = 0;\n return wwwPrefixInside;\n\n /**\n * In www prefix.\n *\n * ```markdown\n * > | www.example.com\n * ^^^^\n * ```\n *\n * @type {State}\n */\n function wwwPrefixInside(code) {\n if ((code === 87 || code === 119) && size < 3) {\n size++;\n effects.consume(code);\n return wwwPrefixInside;\n }\n if (code === 46 && size === 3) {\n effects.consume(code);\n return wwwPrefixAfter;\n }\n return nok(code);\n }\n\n /**\n * After www prefix.\n *\n * ```markdown\n * > | www.example.com\n * ^\n * ```\n *\n * @type {State}\n */\n function wwwPrefixAfter(code) {\n // If there is *anything*, we can link.\n return code === null ? nok(code) : ok(code);\n }\n}\n\n/**\n * Domain.\n *\n * ```markdown\n * > | a https://example.org b\n * ^^^^^^^^^^^\n * ```\n *\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeDomain(effects, ok, nok) {\n /** @type {boolean | undefined} */\n let underscoreInLastSegment;\n /** @type {boolean | undefined} */\n let underscoreInLastLastSegment;\n /** @type {boolean | undefined} */\n let seen;\n return domainInside;\n\n /**\n * In domain.\n *\n * ```markdown\n * > | https://example.com/a\n * ^^^^^^^^^^^\n * ```\n *\n * @type {State}\n */\n function domainInside(code) {\n // Check whether this marker, which is a trailing punctuation\n // marker, optionally followed by more trailing markers, and then\n // followed by an end.\n if (code === 46 || code === 95) {\n return effects.check(trail, domainAfter, domainAtPunctuation)(code);\n }\n\n // GH documents that only alphanumerics (other than `-`, `.`, and `_`) can\n // occur, which sounds like ASCII only, but they also support `www.\u9EDE\u770B.com`,\n // so that\u2019s Unicode.\n // Instead of some new production for Unicode alphanumerics, markdown\n // already has that for Unicode punctuation and whitespace, so use those.\n // Source: .\n if (code === null || markdownLineEndingOrSpace(code) || unicodeWhitespace(code) || code !== 45 && unicodePunctuation(code)) {\n return domainAfter(code);\n }\n seen = true;\n effects.consume(code);\n return domainInside;\n }\n\n /**\n * In domain, at potential trailing punctuation, that was not trailing.\n *\n * ```markdown\n * > | https://example.com\n * ^\n * ```\n *\n * @type {State}\n */\n function domainAtPunctuation(code) {\n // There is an underscore in the last segment of the domain\n if (code === 95) {\n underscoreInLastSegment = true;\n }\n // Otherwise, it\u2019s a `.`: save the last segment underscore in the\n // penultimate segment slot.\n else {\n underscoreInLastLastSegment = underscoreInLastSegment;\n underscoreInLastSegment = undefined;\n }\n effects.consume(code);\n return domainInside;\n }\n\n /**\n * After domain.\n *\n * ```markdown\n * > | https://example.com/a\n * ^\n * ```\n *\n * @type {State} */\n function domainAfter(code) {\n // Note: that\u2019s GH says a dot is needed, but it\u2019s not true:\n // \n if (underscoreInLastLastSegment || underscoreInLastSegment || !seen) {\n return nok(code);\n }\n return ok(code);\n }\n}\n\n/**\n * Path.\n *\n * ```markdown\n * > | a https://example.org/stuff b\n * ^^^^^^\n * ```\n *\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizePath(effects, ok) {\n let sizeOpen = 0;\n let sizeClose = 0;\n return pathInside;\n\n /**\n * In path.\n *\n * ```markdown\n * > | https://example.com/a\n * ^^\n * ```\n *\n * @type {State}\n */\n function pathInside(code) {\n if (code === 40) {\n sizeOpen++;\n effects.consume(code);\n return pathInside;\n }\n\n // To do: `markdown-rs` also needs this.\n // If this is a paren, and there are less closings than openings,\n // we don\u2019t check for a trail.\n if (code === 41 && sizeClose < sizeOpen) {\n return pathAtPunctuation(code);\n }\n\n // Check whether this trailing punctuation marker is optionally\n // followed by more trailing markers, and then followed\n // by an end.\n if (code === 33 || code === 34 || code === 38 || code === 39 || code === 41 || code === 42 || code === 44 || code === 46 || code === 58 || code === 59 || code === 60 || code === 63 || code === 93 || code === 95 || code === 126) {\n return effects.check(trail, ok, pathAtPunctuation)(code);\n }\n if (code === null || markdownLineEndingOrSpace(code) || unicodeWhitespace(code)) {\n return ok(code);\n }\n effects.consume(code);\n return pathInside;\n }\n\n /**\n * In path, at potential trailing punctuation, that was not trailing.\n *\n * ```markdown\n * > | https://example.com/a\"b\n * ^\n * ```\n *\n * @type {State}\n */\n function pathAtPunctuation(code) {\n // Count closing parens.\n if (code === 41) {\n sizeClose++;\n }\n effects.consume(code);\n return pathInside;\n }\n}\n\n/**\n * Trail.\n *\n * This calls `ok` if this *is* the trail, followed by an end, which means\n * the entire trail is not part of the link.\n * It calls `nok` if this *is* part of the link.\n *\n * ```markdown\n * > | https://example.com\").\n * ^^^\n * ```\n *\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeTrail(effects, ok, nok) {\n return trail;\n\n /**\n * In trail of domain or path.\n *\n * ```markdown\n * > | https://example.com\").\n * ^\n * ```\n *\n * @type {State}\n */\n function trail(code) {\n // Regular trailing punctuation.\n if (code === 33 || code === 34 || code === 39 || code === 41 || code === 42 || code === 44 || code === 46 || code === 58 || code === 59 || code === 63 || code === 95 || code === 126) {\n effects.consume(code);\n return trail;\n }\n\n // `&` followed by one or more alphabeticals and then a `;`, is\n // as a whole considered as trailing punctuation.\n // In all other cases, it is considered as continuation of the URL.\n if (code === 38) {\n effects.consume(code);\n return trailCharacterReferenceStart;\n }\n\n // Needed because we allow literals after `[`, as we fix:\n // .\n // Check that it is not followed by `(` or `[`.\n if (code === 93) {\n effects.consume(code);\n return trailBracketAfter;\n }\n if (\n // `<` is an end.\n code === 60 ||\n // So is whitespace.\n code === null || markdownLineEndingOrSpace(code) || unicodeWhitespace(code)) {\n return ok(code);\n }\n return nok(code);\n }\n\n /**\n * In trail, after `]`.\n *\n * > \uD83D\uDC49 **Note**: this deviates from `cmark-gfm` to fix a bug.\n * > See end of for more.\n *\n * ```markdown\n * > | https://example.com](\n * ^\n * ```\n *\n * @type {State}\n */\n function trailBracketAfter(code) {\n // Whitespace or something that could start a resource or reference is the end.\n // Switch back to trail otherwise.\n if (code === null || code === 40 || code === 91 || markdownLineEndingOrSpace(code) || unicodeWhitespace(code)) {\n return ok(code);\n }\n return trail(code);\n }\n\n /**\n * In character-reference like trail, after `&`.\n *\n * ```markdown\n * > | https://example.com&).\n * ^\n * ```\n *\n * @type {State}\n */\n function trailCharacterReferenceStart(code) {\n // When non-alpha, it\u2019s not a trail.\n return asciiAlpha(code) ? trailCharacterReferenceInside(code) : nok(code);\n }\n\n /**\n * In character-reference like trail.\n *\n * ```markdown\n * > | https://example.com&).\n * ^\n * ```\n *\n * @type {State}\n */\n function trailCharacterReferenceInside(code) {\n // Switch back to trail if this is well-formed.\n if (code === 59) {\n effects.consume(code);\n return trail;\n }\n if (asciiAlpha(code)) {\n effects.consume(code);\n return trailCharacterReferenceInside;\n }\n\n // It\u2019s not a trail.\n return nok(code);\n }\n}\n\n/**\n * Dot in email domain trail.\n *\n * This calls `ok` if this *is* the trail, followed by an end, which means\n * the trail is not part of the link.\n * It calls `nok` if this *is* part of the link.\n *\n * ```markdown\n * > | contact@example.org.\n * ^\n * ```\n *\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeEmailDomainDotTrail(effects, ok, nok) {\n return start;\n\n /**\n * Dot.\n *\n * ```markdown\n * > | contact@example.org.\n * ^ ^\n * ```\n *\n * @type {State}\n */\n function start(code) {\n // Must be dot.\n effects.consume(code);\n return after;\n }\n\n /**\n * After dot.\n *\n * ```markdown\n * > | contact@example.org.\n * ^ ^\n * ```\n *\n * @type {State}\n */\n function after(code) {\n // Not a trail if alphanumeric.\n return asciiAlphanumeric(code) ? nok(code) : ok(code);\n }\n}\n\n/**\n * See:\n * .\n *\n * @type {Previous}\n */\nfunction previousWww(code) {\n return code === null || code === 40 || code === 42 || code === 95 || code === 91 || code === 93 || code === 126 || markdownLineEndingOrSpace(code);\n}\n\n/**\n * See:\n * .\n *\n * @type {Previous}\n */\nfunction previousProtocol(code) {\n return !asciiAlpha(code);\n}\n\n/**\n * @this {TokenizeContext}\n * @type {Previous}\n */\nfunction previousEmail(code) {\n // Do not allow a slash \u201Cinside\u201D atext.\n // The reference code is a bit weird, but that\u2019s what it results in.\n // Source: .\n // Other than slash, every preceding character is allowed.\n return !(code === 47 || gfmAtext(code));\n}\n\n/**\n * @param {Code} code\n * @returns {boolean}\n */\nfunction gfmAtext(code) {\n return code === 43 || code === 45 || code === 46 || code === 95 || asciiAlphanumeric(code);\n}\n\n/**\n * @param {Array} events\n * @returns {boolean}\n */\nfunction previousUnbalanced(events) {\n let index = events.length;\n let result = false;\n while (index--) {\n const token = events[index][1];\n if ((token.type === 'labelLink' || token.type === 'labelImage') && !token._balanced) {\n result = true;\n break;\n }\n\n // If we\u2019ve seen this token, and it was marked as not having any unbalanced\n // bracket before it, we can exit.\n if (token._gfmAutolinkLiteralWalkedInto) {\n result = false;\n break;\n }\n }\n if (events.length > 0 && !result) {\n // Mark the last token as \u201Cwalked into\u201D w/o finding\n // anything.\n events[events.length - 1][1]._gfmAutolinkLiteralWalkedInto = true;\n }\n return result;\n}", "/**\n * @import {Event, Exiter, Extension, Resolver, State, Token, TokenizeContext, Tokenizer} from 'micromark-util-types'\n */\n\nimport { blankLine } from 'micromark-core-commonmark';\nimport { factorySpace } from 'micromark-factory-space';\nimport { markdownLineEndingOrSpace } from 'micromark-util-character';\nimport { normalizeIdentifier } from 'micromark-util-normalize-identifier';\nconst indent = {\n tokenize: tokenizeIndent,\n partial: true\n};\n\n// To do: micromark should support a `_hiddenGfmFootnoteSupport`, which only\n// affects label start (image).\n// That will let us drop `tokenizePotentialGfmFootnote*`.\n// It currently has a `_hiddenFootnoteSupport`, which affects that and more.\n// That can be removed when `micromark-extension-footnote` is archived.\n\n/**\n * Create an extension for `micromark` to enable GFM footnote syntax.\n *\n * @returns {Extension}\n * Extension for `micromark` that can be passed in `extensions` to\n * enable GFM footnote syntax.\n */\nexport function gfmFootnote() {\n /** @type {Extension} */\n return {\n document: {\n [91]: {\n name: 'gfmFootnoteDefinition',\n tokenize: tokenizeDefinitionStart,\n continuation: {\n tokenize: tokenizeDefinitionContinuation\n },\n exit: gfmFootnoteDefinitionEnd\n }\n },\n text: {\n [91]: {\n name: 'gfmFootnoteCall',\n tokenize: tokenizeGfmFootnoteCall\n },\n [93]: {\n name: 'gfmPotentialFootnoteCall',\n add: 'after',\n tokenize: tokenizePotentialGfmFootnoteCall,\n resolveTo: resolveToPotentialGfmFootnoteCall\n }\n }\n };\n}\n\n// To do: remove after micromark update.\n/**\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizePotentialGfmFootnoteCall(effects, ok, nok) {\n const self = this;\n let index = self.events.length;\n const defined = self.parser.gfmFootnotes || (self.parser.gfmFootnotes = []);\n /** @type {Token} */\n let labelStart;\n\n // Find an opening.\n while (index--) {\n const token = self.events[index][1];\n if (token.type === \"labelImage\") {\n labelStart = token;\n break;\n }\n\n // Exit if we\u2019ve walked far enough.\n if (token.type === 'gfmFootnoteCall' || token.type === \"labelLink\" || token.type === \"label\" || token.type === \"image\" || token.type === \"link\") {\n break;\n }\n }\n return start;\n\n /**\n * @type {State}\n */\n function start(code) {\n if (!labelStart || !labelStart._balanced) {\n return nok(code);\n }\n const id = normalizeIdentifier(self.sliceSerialize({\n start: labelStart.end,\n end: self.now()\n }));\n if (id.codePointAt(0) !== 94 || !defined.includes(id.slice(1))) {\n return nok(code);\n }\n effects.enter('gfmFootnoteCallLabelMarker');\n effects.consume(code);\n effects.exit('gfmFootnoteCallLabelMarker');\n return ok(code);\n }\n}\n\n// To do: remove after micromark update.\n/** @type {Resolver} */\nfunction resolveToPotentialGfmFootnoteCall(events, context) {\n let index = events.length;\n /** @type {Token | undefined} */\n let labelStart;\n\n // Find an opening.\n while (index--) {\n if (events[index][1].type === \"labelImage\" && events[index][0] === 'enter') {\n labelStart = events[index][1];\n break;\n }\n }\n // Change the `labelImageMarker` to a `data`.\n events[index + 1][1].type = \"data\";\n events[index + 3][1].type = 'gfmFootnoteCallLabelMarker';\n\n // The whole (without `!`):\n /** @type {Token} */\n const call = {\n type: 'gfmFootnoteCall',\n start: Object.assign({}, events[index + 3][1].start),\n end: Object.assign({}, events[events.length - 1][1].end)\n };\n // The `^` marker\n /** @type {Token} */\n const marker = {\n type: 'gfmFootnoteCallMarker',\n start: Object.assign({}, events[index + 3][1].end),\n end: Object.assign({}, events[index + 3][1].end)\n };\n // Increment the end 1 character.\n marker.end.column++;\n marker.end.offset++;\n marker.end._bufferIndex++;\n /** @type {Token} */\n const string = {\n type: 'gfmFootnoteCallString',\n start: Object.assign({}, marker.end),\n end: Object.assign({}, events[events.length - 1][1].start)\n };\n /** @type {Token} */\n const chunk = {\n type: \"chunkString\",\n contentType: 'string',\n start: Object.assign({}, string.start),\n end: Object.assign({}, string.end)\n };\n\n /** @type {Array} */\n const replacement = [\n // Take the `labelImageMarker` (now `data`, the `!`)\n events[index + 1], events[index + 2], ['enter', call, context],\n // The `[`\n events[index + 3], events[index + 4],\n // The `^`.\n ['enter', marker, context], ['exit', marker, context],\n // Everything in between.\n ['enter', string, context], ['enter', chunk, context], ['exit', chunk, context], ['exit', string, context],\n // The ending (`]`, properly parsed and labelled).\n events[events.length - 2], events[events.length - 1], ['exit', call, context]];\n events.splice(index, events.length - index + 1, ...replacement);\n return events;\n}\n\n/**\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeGfmFootnoteCall(effects, ok, nok) {\n const self = this;\n const defined = self.parser.gfmFootnotes || (self.parser.gfmFootnotes = []);\n let size = 0;\n /** @type {boolean} */\n let data;\n\n // Note: the implementation of `markdown-rs` is different, because it houses\n // core *and* extensions in one project.\n // Therefore, it can include footnote logic inside `label-end`.\n // We can\u2019t do that, but luckily, we can parse footnotes in a simpler way than\n // needed for labels.\n return start;\n\n /**\n * Start of footnote label.\n *\n * ```markdown\n * > | a [^b] c\n * ^\n * ```\n *\n * @type {State}\n */\n function start(code) {\n effects.enter('gfmFootnoteCall');\n effects.enter('gfmFootnoteCallLabelMarker');\n effects.consume(code);\n effects.exit('gfmFootnoteCallLabelMarker');\n return callStart;\n }\n\n /**\n * After `[`, at `^`.\n *\n * ```markdown\n * > | a [^b] c\n * ^\n * ```\n *\n * @type {State}\n */\n function callStart(code) {\n if (code !== 94) return nok(code);\n effects.enter('gfmFootnoteCallMarker');\n effects.consume(code);\n effects.exit('gfmFootnoteCallMarker');\n effects.enter('gfmFootnoteCallString');\n effects.enter('chunkString').contentType = 'string';\n return callData;\n }\n\n /**\n * In label.\n *\n * ```markdown\n * > | a [^b] c\n * ^\n * ```\n *\n * @type {State}\n */\n function callData(code) {\n if (\n // Too long.\n size > 999 ||\n // Closing brace with nothing.\n code === 93 && !data ||\n // Space or tab is not supported by GFM for some reason.\n // `\\n` and `[` not being supported makes sense.\n code === null || code === 91 || markdownLineEndingOrSpace(code)) {\n return nok(code);\n }\n if (code === 93) {\n effects.exit('chunkString');\n const token = effects.exit('gfmFootnoteCallString');\n if (!defined.includes(normalizeIdentifier(self.sliceSerialize(token)))) {\n return nok(code);\n }\n effects.enter('gfmFootnoteCallLabelMarker');\n effects.consume(code);\n effects.exit('gfmFootnoteCallLabelMarker');\n effects.exit('gfmFootnoteCall');\n return ok;\n }\n if (!markdownLineEndingOrSpace(code)) {\n data = true;\n }\n size++;\n effects.consume(code);\n return code === 92 ? callEscape : callData;\n }\n\n /**\n * On character after escape.\n *\n * ```markdown\n * > | a [^b\\c] d\n * ^\n * ```\n *\n * @type {State}\n */\n function callEscape(code) {\n if (code === 91 || code === 92 || code === 93) {\n effects.consume(code);\n size++;\n return callData;\n }\n return callData(code);\n }\n}\n\n/**\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeDefinitionStart(effects, ok, nok) {\n const self = this;\n const defined = self.parser.gfmFootnotes || (self.parser.gfmFootnotes = []);\n /** @type {string} */\n let identifier;\n let size = 0;\n /** @type {boolean | undefined} */\n let data;\n return start;\n\n /**\n * Start of GFM footnote definition.\n *\n * ```markdown\n * > | [^a]: b\n * ^\n * ```\n *\n * @type {State}\n */\n function start(code) {\n effects.enter('gfmFootnoteDefinition')._container = true;\n effects.enter('gfmFootnoteDefinitionLabel');\n effects.enter('gfmFootnoteDefinitionLabelMarker');\n effects.consume(code);\n effects.exit('gfmFootnoteDefinitionLabelMarker');\n return labelAtMarker;\n }\n\n /**\n * In label, at caret.\n *\n * ```markdown\n * > | [^a]: b\n * ^\n * ```\n *\n * @type {State}\n */\n function labelAtMarker(code) {\n if (code === 94) {\n effects.enter('gfmFootnoteDefinitionMarker');\n effects.consume(code);\n effects.exit('gfmFootnoteDefinitionMarker');\n effects.enter('gfmFootnoteDefinitionLabelString');\n effects.enter('chunkString').contentType = 'string';\n return labelInside;\n }\n return nok(code);\n }\n\n /**\n * In label.\n *\n * > \uD83D\uDC49 **Note**: `cmark-gfm` prevents whitespace from occurring in footnote\n * > definition labels.\n *\n * ```markdown\n * > | [^a]: b\n * ^\n * ```\n *\n * @type {State}\n */\n function labelInside(code) {\n if (\n // Too long.\n size > 999 ||\n // Closing brace with nothing.\n code === 93 && !data ||\n // Space or tab is not supported by GFM for some reason.\n // `\\n` and `[` not being supported makes sense.\n code === null || code === 91 || markdownLineEndingOrSpace(code)) {\n return nok(code);\n }\n if (code === 93) {\n effects.exit('chunkString');\n const token = effects.exit('gfmFootnoteDefinitionLabelString');\n identifier = normalizeIdentifier(self.sliceSerialize(token));\n effects.enter('gfmFootnoteDefinitionLabelMarker');\n effects.consume(code);\n effects.exit('gfmFootnoteDefinitionLabelMarker');\n effects.exit('gfmFootnoteDefinitionLabel');\n return labelAfter;\n }\n if (!markdownLineEndingOrSpace(code)) {\n data = true;\n }\n size++;\n effects.consume(code);\n return code === 92 ? labelEscape : labelInside;\n }\n\n /**\n * After `\\`, at a special character.\n *\n * > \uD83D\uDC49 **Note**: `cmark-gfm` currently does not support escaped brackets:\n * > \n *\n * ```markdown\n * > | [^a\\*b]: c\n * ^\n * ```\n *\n * @type {State}\n */\n function labelEscape(code) {\n if (code === 91 || code === 92 || code === 93) {\n effects.consume(code);\n size++;\n return labelInside;\n }\n return labelInside(code);\n }\n\n /**\n * After definition label.\n *\n * ```markdown\n * > | [^a]: b\n * ^\n * ```\n *\n * @type {State}\n */\n function labelAfter(code) {\n if (code === 58) {\n effects.enter('definitionMarker');\n effects.consume(code);\n effects.exit('definitionMarker');\n if (!defined.includes(identifier)) {\n defined.push(identifier);\n }\n\n // Any whitespace after the marker is eaten, forming indented code\n // is not possible.\n // No space is also fine, just like a block quote marker.\n return factorySpace(effects, whitespaceAfter, 'gfmFootnoteDefinitionWhitespace');\n }\n return nok(code);\n }\n\n /**\n * After definition prefix.\n *\n * ```markdown\n * > | [^a]: b\n * ^\n * ```\n *\n * @type {State}\n */\n function whitespaceAfter(code) {\n // `markdown-rs` has a wrapping token for the prefix that is closed here.\n return ok(code);\n }\n}\n\n/**\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeDefinitionContinuation(effects, ok, nok) {\n /// Start of footnote definition continuation.\n ///\n /// ```markdown\n /// | [^a]: b\n /// > | c\n /// ^\n /// ```\n //\n // Either a blank line, which is okay, or an indented thing.\n return effects.check(blankLine, ok, effects.attempt(indent, ok, nok));\n}\n\n/** @type {Exiter} */\nfunction gfmFootnoteDefinitionEnd(effects) {\n effects.exit('gfmFootnoteDefinition');\n}\n\n/**\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeIndent(effects, ok, nok) {\n const self = this;\n return factorySpace(effects, afterPrefix, 'gfmFootnoteDefinitionIndent', 4 + 1);\n\n /**\n * @type {State}\n */\n function afterPrefix(code) {\n const tail = self.events[self.events.length - 1];\n return tail && tail[1].type === 'gfmFootnoteDefinitionIndent' && tail[2].sliceSerialize(tail[1], true).length === 4 ? ok(code) : nok(code);\n }\n}", "/**\n * @import {Options} from 'micromark-extension-gfm-strikethrough'\n * @import {Event, Extension, Resolver, State, Token, TokenizeContext, Tokenizer} from 'micromark-util-types'\n */\n\nimport { splice } from 'micromark-util-chunked';\nimport { classifyCharacter } from 'micromark-util-classify-character';\nimport { resolveAll } from 'micromark-util-resolve-all';\n/**\n * Create an extension for `micromark` to enable GFM strikethrough syntax.\n *\n * @param {Options | null | undefined} [options={}]\n * Configuration.\n * @returns {Extension}\n * Extension for `micromark` that can be passed in `extensions`, to\n * enable GFM strikethrough syntax.\n */\nexport function gfmStrikethrough(options) {\n const options_ = options || {};\n let single = options_.singleTilde;\n const tokenizer = {\n name: 'strikethrough',\n tokenize: tokenizeStrikethrough,\n resolveAll: resolveAllStrikethrough\n };\n if (single === null || single === undefined) {\n single = true;\n }\n return {\n text: {\n [126]: tokenizer\n },\n insideSpan: {\n null: [tokenizer]\n },\n attentionMarkers: {\n null: [126]\n }\n };\n\n /**\n * Take events and resolve strikethrough.\n *\n * @type {Resolver}\n */\n function resolveAllStrikethrough(events, context) {\n let index = -1;\n\n // Walk through all events.\n while (++index < events.length) {\n // Find a token that can close.\n if (events[index][0] === 'enter' && events[index][1].type === 'strikethroughSequenceTemporary' && events[index][1]._close) {\n let open = index;\n\n // Now walk back to find an opener.\n while (open--) {\n // Find a token that can open the closer.\n if (events[open][0] === 'exit' && events[open][1].type === 'strikethroughSequenceTemporary' && events[open][1]._open &&\n // If the sizes are the same:\n events[index][1].end.offset - events[index][1].start.offset === events[open][1].end.offset - events[open][1].start.offset) {\n events[index][1].type = 'strikethroughSequence';\n events[open][1].type = 'strikethroughSequence';\n\n /** @type {Token} */\n const strikethrough = {\n type: 'strikethrough',\n start: Object.assign({}, events[open][1].start),\n end: Object.assign({}, events[index][1].end)\n };\n\n /** @type {Token} */\n const text = {\n type: 'strikethroughText',\n start: Object.assign({}, events[open][1].end),\n end: Object.assign({}, events[index][1].start)\n };\n\n // Opening.\n /** @type {Array} */\n const nextEvents = [['enter', strikethrough, context], ['enter', events[open][1], context], ['exit', events[open][1], context], ['enter', text, context]];\n const insideSpan = context.parser.constructs.insideSpan.null;\n if (insideSpan) {\n // Between.\n splice(nextEvents, nextEvents.length, 0, resolveAll(insideSpan, events.slice(open + 1, index), context));\n }\n\n // Closing.\n splice(nextEvents, nextEvents.length, 0, [['exit', text, context], ['enter', events[index][1], context], ['exit', events[index][1], context], ['exit', strikethrough, context]]);\n splice(events, open - 1, index - open + 3, nextEvents);\n index = open + nextEvents.length - 2;\n break;\n }\n }\n }\n }\n index = -1;\n while (++index < events.length) {\n if (events[index][1].type === 'strikethroughSequenceTemporary') {\n events[index][1].type = \"data\";\n }\n }\n return events;\n }\n\n /**\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\n function tokenizeStrikethrough(effects, ok, nok) {\n const previous = this.previous;\n const events = this.events;\n let size = 0;\n return start;\n\n /** @type {State} */\n function start(code) {\n if (previous === 126 && events[events.length - 1][1].type !== \"characterEscape\") {\n return nok(code);\n }\n effects.enter('strikethroughSequenceTemporary');\n return more(code);\n }\n\n /** @type {State} */\n function more(code) {\n const before = classifyCharacter(previous);\n if (code === 126) {\n // If this is the third marker, exit.\n if (size > 1) return nok(code);\n effects.consume(code);\n size++;\n return more;\n }\n if (size < 2 && !single) return nok(code);\n const token = effects.exit('strikethroughSequenceTemporary');\n const after = classifyCharacter(code);\n token._open = !after || after === 2 && Boolean(before);\n token._close = !before || before === 2 && Boolean(after);\n return ok(code);\n }\n }\n}", "/**\n * @import {Event} from 'micromark-util-types'\n */\n\n// Port of `edit_map.rs` from `markdown-rs`.\n// This should move to `markdown-js` later.\n\n// Deal with several changes in events, batching them together.\n//\n// Preferably, changes should be kept to a minimum.\n// Sometimes, it\u2019s needed to change the list of events, because parsing can be\n// messy, and it helps to expose a cleaner interface of events to the compiler\n// and other users.\n// It can also help to merge many adjacent similar events.\n// And, in other cases, it\u2019s needed to parse subcontent: pass some events\n// through another tokenizer and inject the result.\n\n/**\n * @typedef {[number, number, Array]} Change\n * @typedef {[number, number, number]} Jump\n */\n\n/**\n * Tracks a bunch of edits.\n */\nexport class EditMap {\n /**\n * Create a new edit map.\n */\n constructor() {\n /**\n * Record of changes.\n *\n * @type {Array}\n */\n this.map = [];\n }\n\n /**\n * Create an edit: a remove and/or add at a certain place.\n *\n * @param {number} index\n * @param {number} remove\n * @param {Array} add\n * @returns {undefined}\n */\n add(index, remove, add) {\n addImplementation(this, index, remove, add);\n }\n\n // To do: add this when moving to `micromark`.\n // /**\n // * Create an edit: but insert `add` before existing additions.\n // *\n // * @param {number} index\n // * @param {number} remove\n // * @param {Array} add\n // * @returns {undefined}\n // */\n // addBefore(index, remove, add) {\n // addImplementation(this, index, remove, add, true)\n // }\n\n /**\n * Done, change the events.\n *\n * @param {Array} events\n * @returns {undefined}\n */\n consume(events) {\n this.map.sort(function (a, b) {\n return a[0] - b[0];\n });\n\n /* c8 ignore next 3 -- `resolve` is never called without tables, so without edits. */\n if (this.map.length === 0) {\n return;\n }\n\n // To do: if links are added in events, like they are in `markdown-rs`,\n // this is needed.\n // // Calculate jumps: where items in the current list move to.\n // /** @type {Array} */\n // const jumps = []\n // let index = 0\n // let addAcc = 0\n // let removeAcc = 0\n // while (index < this.map.length) {\n // const [at, remove, add] = this.map[index]\n // removeAcc += remove\n // addAcc += add.length\n // jumps.push([at, removeAcc, addAcc])\n // index += 1\n // }\n //\n // . shiftLinks(events, jumps)\n\n let index = this.map.length;\n /** @type {Array>} */\n const vecs = [];\n while (index > 0) {\n index -= 1;\n vecs.push(events.slice(this.map[index][0] + this.map[index][1]), this.map[index][2]);\n\n // Truncate rest.\n events.length = this.map[index][0];\n }\n vecs.push(events.slice());\n events.length = 0;\n let slice = vecs.pop();\n while (slice) {\n for (const element of slice) {\n events.push(element);\n }\n slice = vecs.pop();\n }\n\n // Truncate everything.\n this.map.length = 0;\n }\n}\n\n/**\n * Create an edit.\n *\n * @param {EditMap} editMap\n * @param {number} at\n * @param {number} remove\n * @param {Array} add\n * @returns {undefined}\n */\nfunction addImplementation(editMap, at, remove, add) {\n let index = 0;\n\n /* c8 ignore next 3 -- `resolve` is never called without tables, so without edits. */\n if (remove === 0 && add.length === 0) {\n return;\n }\n while (index < editMap.map.length) {\n if (editMap.map[index][0] === at) {\n editMap.map[index][1] += remove;\n\n // To do: before not used by tables, use when moving to micromark.\n // if (before) {\n // add.push(...editMap.map[index][2])\n // editMap.map[index][2] = add\n // } else {\n editMap.map[index][2].push(...add);\n // }\n\n return;\n }\n index += 1;\n }\n editMap.map.push([at, remove, add]);\n}\n\n// /**\n// * Shift `previous` and `next` links according to `jumps`.\n// *\n// * This fixes links in case there are events removed or added between them.\n// *\n// * @param {Array} events\n// * @param {Array} jumps\n// */\n// function shiftLinks(events, jumps) {\n// let jumpIndex = 0\n// let index = 0\n// let add = 0\n// let rm = 0\n\n// while (index < events.length) {\n// const rmCurr = rm\n\n// while (jumpIndex < jumps.length && jumps[jumpIndex][0] <= index) {\n// add = jumps[jumpIndex][2]\n// rm = jumps[jumpIndex][1]\n// jumpIndex += 1\n// }\n\n// // Ignore items that will be removed.\n// if (rm > rmCurr) {\n// index += rm - rmCurr\n// } else {\n// // ?\n// // if let Some(link) = &events[index].link {\n// // if let Some(next) = link.next {\n// // events[next].link.as_mut().unwrap().previous = Some(index + add - rm);\n// // while jumpIndex < jumps.len() && jumps[jumpIndex].0 <= next {\n// // add = jumps[jumpIndex].2;\n// // rm = jumps[jumpIndex].1;\n// // jumpIndex += 1;\n// // }\n// // events[index].link.as_mut().unwrap().next = Some(next + add - rm);\n// // index = next;\n// // continue;\n// // }\n// // }\n// index += 1\n// }\n// }\n// }", "/**\n * @import {Event} from 'micromark-util-types'\n */\n\n/**\n * @typedef {'center' | 'left' | 'none' | 'right'} Align\n */\n\n/**\n * Figure out the alignment of a GFM table.\n *\n * @param {Readonly>} events\n * List of events.\n * @param {number} index\n * Table enter event.\n * @returns {Array}\n * List of aligns.\n */\nexport function gfmTableAlign(events, index) {\n let inDelimiterRow = false;\n /** @type {Array} */\n const align = [];\n while (index < events.length) {\n const event = events[index];\n if (inDelimiterRow) {\n if (event[0] === 'enter') {\n // Start of alignment value: set a new column.\n // To do: `markdown-rs` uses `tableDelimiterCellValue`.\n if (event[1].type === 'tableContent') {\n align.push(events[index + 1][1].type === 'tableDelimiterMarker' ? 'left' : 'none');\n }\n }\n // Exits:\n // End of alignment value: change the column.\n // To do: `markdown-rs` uses `tableDelimiterCellValue`.\n else if (event[1].type === 'tableContent') {\n if (events[index - 1][1].type === 'tableDelimiterMarker') {\n const alignIndex = align.length - 1;\n align[alignIndex] = align[alignIndex] === 'left' ? 'center' : 'right';\n }\n }\n // Done!\n else if (event[1].type === 'tableDelimiterRow') {\n break;\n }\n } else if (event[0] === 'enter' && event[1].type === 'tableDelimiterRow') {\n inDelimiterRow = true;\n }\n index += 1;\n }\n return align;\n}", "/**\n * @import {Event, Extension, Point, Resolver, State, Token, TokenizeContext, Tokenizer} from 'micromark-util-types'\n */\n\n/**\n * @typedef {[number, number, number, number]} Range\n * Cell info.\n *\n * @typedef {0 | 1 | 2 | 3} RowKind\n * Where we are: `1` for head row, `2` for delimiter row, `3` for body row.\n */\n\nimport { factorySpace } from 'micromark-factory-space';\nimport { markdownLineEnding, markdownLineEndingOrSpace, markdownSpace } from 'micromark-util-character';\nimport { EditMap } from './edit-map.js';\nimport { gfmTableAlign } from './infer.js';\n\n/**\n * Create an HTML extension for `micromark` to support GitHub tables syntax.\n *\n * @returns {Extension}\n * Extension for `micromark` that can be passed in `extensions` to enable GFM\n * table syntax.\n */\nexport function gfmTable() {\n return {\n flow: {\n null: {\n name: 'table',\n tokenize: tokenizeTable,\n resolveAll: resolveTable\n }\n }\n };\n}\n\n/**\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeTable(effects, ok, nok) {\n const self = this;\n let size = 0;\n let sizeB = 0;\n /** @type {boolean | undefined} */\n let seen;\n return start;\n\n /**\n * Start of a GFM table.\n *\n * If there is a valid table row or table head before, then we try to parse\n * another row.\n * Otherwise, we try to parse a head.\n *\n * ```markdown\n * > | | a |\n * ^\n * | | - |\n * > | | b |\n * ^\n * ```\n * @type {State}\n */\n function start(code) {\n let index = self.events.length - 1;\n while (index > -1) {\n const type = self.events[index][1].type;\n if (type === \"lineEnding\" ||\n // Note: markdown-rs uses `whitespace` instead of `linePrefix`\n type === \"linePrefix\") index--;else break;\n }\n const tail = index > -1 ? self.events[index][1].type : null;\n const next = tail === 'tableHead' || tail === 'tableRow' ? bodyRowStart : headRowBefore;\n\n // Don\u2019t allow lazy body rows.\n if (next === bodyRowStart && self.parser.lazy[self.now().line]) {\n return nok(code);\n }\n return next(code);\n }\n\n /**\n * Before table head row.\n *\n * ```markdown\n * > | | a |\n * ^\n * | | - |\n * | | b |\n * ```\n *\n * @type {State}\n */\n function headRowBefore(code) {\n effects.enter('tableHead');\n effects.enter('tableRow');\n return headRowStart(code);\n }\n\n /**\n * Before table head row, after whitespace.\n *\n * ```markdown\n * > | | a |\n * ^\n * | | - |\n * | | b |\n * ```\n *\n * @type {State}\n */\n function headRowStart(code) {\n if (code === 124) {\n return headRowBreak(code);\n }\n\n // To do: micromark-js should let us parse our own whitespace in extensions,\n // like `markdown-rs`:\n //\n // ```js\n // // 4+ spaces.\n // if (markdownSpace(code)) {\n // return nok(code)\n // }\n // ```\n\n seen = true;\n // Count the first character, that isn\u2019t a pipe, double.\n sizeB += 1;\n return headRowBreak(code);\n }\n\n /**\n * At break in table head row.\n *\n * ```markdown\n * > | | a |\n * ^\n * ^\n * ^\n * | | - |\n * | | b |\n * ```\n *\n * @type {State}\n */\n function headRowBreak(code) {\n if (code === null) {\n // Note: in `markdown-rs`, we need to reset, in `micromark-js` we don\u2018t.\n return nok(code);\n }\n if (markdownLineEnding(code)) {\n // If anything other than one pipe (ignoring whitespace) was used, it\u2019s fine.\n if (sizeB > 1) {\n sizeB = 0;\n // To do: check if this works.\n // Feel free to interrupt:\n self.interrupt = true;\n effects.exit('tableRow');\n effects.enter(\"lineEnding\");\n effects.consume(code);\n effects.exit(\"lineEnding\");\n return headDelimiterStart;\n }\n\n // Note: in `markdown-rs`, we need to reset, in `micromark-js` we don\u2018t.\n return nok(code);\n }\n if (markdownSpace(code)) {\n // To do: check if this is fine.\n // effects.attempt(State::Next(StateName::GfmTableHeadRowBreak), State::Nok)\n // State::Retry(space_or_tab(tokenizer))\n return factorySpace(effects, headRowBreak, \"whitespace\")(code);\n }\n sizeB += 1;\n if (seen) {\n seen = false;\n // Header cell count.\n size += 1;\n }\n if (code === 124) {\n effects.enter('tableCellDivider');\n effects.consume(code);\n effects.exit('tableCellDivider');\n // Whether a delimiter was seen.\n seen = true;\n return headRowBreak;\n }\n\n // Anything else is cell data.\n effects.enter(\"data\");\n return headRowData(code);\n }\n\n /**\n * In table head row data.\n *\n * ```markdown\n * > | | a |\n * ^\n * | | - |\n * | | b |\n * ```\n *\n * @type {State}\n */\n function headRowData(code) {\n if (code === null || code === 124 || markdownLineEndingOrSpace(code)) {\n effects.exit(\"data\");\n return headRowBreak(code);\n }\n effects.consume(code);\n return code === 92 ? headRowEscape : headRowData;\n }\n\n /**\n * In table head row escape.\n *\n * ```markdown\n * > | | a\\-b |\n * ^\n * | | ---- |\n * | | c |\n * ```\n *\n * @type {State}\n */\n function headRowEscape(code) {\n if (code === 92 || code === 124) {\n effects.consume(code);\n return headRowData;\n }\n return headRowData(code);\n }\n\n /**\n * Before delimiter row.\n *\n * ```markdown\n * | | a |\n * > | | - |\n * ^\n * | | b |\n * ```\n *\n * @type {State}\n */\n function headDelimiterStart(code) {\n // Reset `interrupt`.\n self.interrupt = false;\n\n // Note: in `markdown-rs`, we need to handle piercing here too.\n if (self.parser.lazy[self.now().line]) {\n return nok(code);\n }\n effects.enter('tableDelimiterRow');\n // Track if we\u2019ve seen a `:` or `|`.\n seen = false;\n if (markdownSpace(code)) {\n return factorySpace(effects, headDelimiterBefore, \"linePrefix\", self.parser.constructs.disable.null.includes('codeIndented') ? undefined : 4)(code);\n }\n return headDelimiterBefore(code);\n }\n\n /**\n * Before delimiter row, after optional whitespace.\n *\n * Reused when a `|` is found later, to parse another cell.\n *\n * ```markdown\n * | | a |\n * > | | - |\n * ^\n * | | b |\n * ```\n *\n * @type {State}\n */\n function headDelimiterBefore(code) {\n if (code === 45 || code === 58) {\n return headDelimiterValueBefore(code);\n }\n if (code === 124) {\n seen = true;\n // If we start with a pipe, we open a cell marker.\n effects.enter('tableCellDivider');\n effects.consume(code);\n effects.exit('tableCellDivider');\n return headDelimiterCellBefore;\n }\n\n // More whitespace / empty row not allowed at start.\n return headDelimiterNok(code);\n }\n\n /**\n * After `|`, before delimiter cell.\n *\n * ```markdown\n * | | a |\n * > | | - |\n * ^\n * ```\n *\n * @type {State}\n */\n function headDelimiterCellBefore(code) {\n if (markdownSpace(code)) {\n return factorySpace(effects, headDelimiterValueBefore, \"whitespace\")(code);\n }\n return headDelimiterValueBefore(code);\n }\n\n /**\n * Before delimiter cell value.\n *\n * ```markdown\n * | | a |\n * > | | - |\n * ^\n * ```\n *\n * @type {State}\n */\n function headDelimiterValueBefore(code) {\n // Align: left.\n if (code === 58) {\n sizeB += 1;\n seen = true;\n effects.enter('tableDelimiterMarker');\n effects.consume(code);\n effects.exit('tableDelimiterMarker');\n return headDelimiterLeftAlignmentAfter;\n }\n\n // Align: none.\n if (code === 45) {\n sizeB += 1;\n // To do: seems weird that this *isn\u2019t* left aligned, but that state is used?\n return headDelimiterLeftAlignmentAfter(code);\n }\n if (code === null || markdownLineEnding(code)) {\n return headDelimiterCellAfter(code);\n }\n return headDelimiterNok(code);\n }\n\n /**\n * After delimiter cell left alignment marker.\n *\n * ```markdown\n * | | a |\n * > | | :- |\n * ^\n * ```\n *\n * @type {State}\n */\n function headDelimiterLeftAlignmentAfter(code) {\n if (code === 45) {\n effects.enter('tableDelimiterFiller');\n return headDelimiterFiller(code);\n }\n\n // Anything else is not ok after the left-align colon.\n return headDelimiterNok(code);\n }\n\n /**\n * In delimiter cell filler.\n *\n * ```markdown\n * | | a |\n * > | | - |\n * ^\n * ```\n *\n * @type {State}\n */\n function headDelimiterFiller(code) {\n if (code === 45) {\n effects.consume(code);\n return headDelimiterFiller;\n }\n\n // Align is `center` if it was `left`, `right` otherwise.\n if (code === 58) {\n seen = true;\n effects.exit('tableDelimiterFiller');\n effects.enter('tableDelimiterMarker');\n effects.consume(code);\n effects.exit('tableDelimiterMarker');\n return headDelimiterRightAlignmentAfter;\n }\n effects.exit('tableDelimiterFiller');\n return headDelimiterRightAlignmentAfter(code);\n }\n\n /**\n * After delimiter cell right alignment marker.\n *\n * ```markdown\n * | | a |\n * > | | -: |\n * ^\n * ```\n *\n * @type {State}\n */\n function headDelimiterRightAlignmentAfter(code) {\n if (markdownSpace(code)) {\n return factorySpace(effects, headDelimiterCellAfter, \"whitespace\")(code);\n }\n return headDelimiterCellAfter(code);\n }\n\n /**\n * After delimiter cell.\n *\n * ```markdown\n * | | a |\n * > | | -: |\n * ^\n * ```\n *\n * @type {State}\n */\n function headDelimiterCellAfter(code) {\n if (code === 124) {\n return headDelimiterBefore(code);\n }\n if (code === null || markdownLineEnding(code)) {\n // Exit when:\n // * there was no `:` or `|` at all (it\u2019s a thematic break or setext\n // underline instead)\n // * the header cell count is not the delimiter cell count\n if (!seen || size !== sizeB) {\n return headDelimiterNok(code);\n }\n\n // Note: in markdown-rs`, a reset is needed here.\n effects.exit('tableDelimiterRow');\n effects.exit('tableHead');\n // To do: in `markdown-rs`, resolvers need to be registered manually.\n // effects.register_resolver(ResolveName::GfmTable)\n return ok(code);\n }\n return headDelimiterNok(code);\n }\n\n /**\n * In delimiter row, at a disallowed byte.\n *\n * ```markdown\n * | | a |\n * > | | x |\n * ^\n * ```\n *\n * @type {State}\n */\n function headDelimiterNok(code) {\n // Note: in `markdown-rs`, we need to reset, in `micromark-js` we don\u2018t.\n return nok(code);\n }\n\n /**\n * Before table body row.\n *\n * ```markdown\n * | | a |\n * | | - |\n * > | | b |\n * ^\n * ```\n *\n * @type {State}\n */\n function bodyRowStart(code) {\n // Note: in `markdown-rs` we need to manually take care of a prefix,\n // but in `micromark-js` that is done for us, so if we\u2019re here, we\u2019re\n // never at whitespace.\n effects.enter('tableRow');\n return bodyRowBreak(code);\n }\n\n /**\n * At break in table body row.\n *\n * ```markdown\n * | | a |\n * | | - |\n * > | | b |\n * ^\n * ^\n * ^\n * ```\n *\n * @type {State}\n */\n function bodyRowBreak(code) {\n if (code === 124) {\n effects.enter('tableCellDivider');\n effects.consume(code);\n effects.exit('tableCellDivider');\n return bodyRowBreak;\n }\n if (code === null || markdownLineEnding(code)) {\n effects.exit('tableRow');\n return ok(code);\n }\n if (markdownSpace(code)) {\n return factorySpace(effects, bodyRowBreak, \"whitespace\")(code);\n }\n\n // Anything else is cell content.\n effects.enter(\"data\");\n return bodyRowData(code);\n }\n\n /**\n * In table body row data.\n *\n * ```markdown\n * | | a |\n * | | - |\n * > | | b |\n * ^\n * ```\n *\n * @type {State}\n */\n function bodyRowData(code) {\n if (code === null || code === 124 || markdownLineEndingOrSpace(code)) {\n effects.exit(\"data\");\n return bodyRowBreak(code);\n }\n effects.consume(code);\n return code === 92 ? bodyRowEscape : bodyRowData;\n }\n\n /**\n * In table body row escape.\n *\n * ```markdown\n * | | a |\n * | | ---- |\n * > | | b\\-c |\n * ^\n * ```\n *\n * @type {State}\n */\n function bodyRowEscape(code) {\n if (code === 92 || code === 124) {\n effects.consume(code);\n return bodyRowData;\n }\n return bodyRowData(code);\n }\n}\n\n/** @type {Resolver} */\n\nfunction resolveTable(events, context) {\n let index = -1;\n let inFirstCellAwaitingPipe = true;\n /** @type {RowKind} */\n let rowKind = 0;\n /** @type {Range} */\n let lastCell = [0, 0, 0, 0];\n /** @type {Range} */\n let cell = [0, 0, 0, 0];\n let afterHeadAwaitingFirstBodyRow = false;\n let lastTableEnd = 0;\n /** @type {Token | undefined} */\n let currentTable;\n /** @type {Token | undefined} */\n let currentBody;\n /** @type {Token | undefined} */\n let currentCell;\n const map = new EditMap();\n while (++index < events.length) {\n const event = events[index];\n const token = event[1];\n if (event[0] === 'enter') {\n // Start of head.\n if (token.type === 'tableHead') {\n afterHeadAwaitingFirstBodyRow = false;\n\n // Inject previous (body end and) table end.\n if (lastTableEnd !== 0) {\n flushTableEnd(map, context, lastTableEnd, currentTable, currentBody);\n currentBody = undefined;\n lastTableEnd = 0;\n }\n\n // Inject table start.\n currentTable = {\n type: 'table',\n start: Object.assign({}, token.start),\n // Note: correct end is set later.\n end: Object.assign({}, token.end)\n };\n map.add(index, 0, [['enter', currentTable, context]]);\n } else if (token.type === 'tableRow' || token.type === 'tableDelimiterRow') {\n inFirstCellAwaitingPipe = true;\n currentCell = undefined;\n lastCell = [0, 0, 0, 0];\n cell = [0, index + 1, 0, 0];\n\n // Inject table body start.\n if (afterHeadAwaitingFirstBodyRow) {\n afterHeadAwaitingFirstBodyRow = false;\n currentBody = {\n type: 'tableBody',\n start: Object.assign({}, token.start),\n // Note: correct end is set later.\n end: Object.assign({}, token.end)\n };\n map.add(index, 0, [['enter', currentBody, context]]);\n }\n rowKind = token.type === 'tableDelimiterRow' ? 2 : currentBody ? 3 : 1;\n }\n // Cell data.\n else if (rowKind && (token.type === \"data\" || token.type === 'tableDelimiterMarker' || token.type === 'tableDelimiterFiller')) {\n inFirstCellAwaitingPipe = false;\n\n // First value in cell.\n if (cell[2] === 0) {\n if (lastCell[1] !== 0) {\n cell[0] = cell[1];\n currentCell = flushCell(map, context, lastCell, rowKind, undefined, currentCell);\n lastCell = [0, 0, 0, 0];\n }\n cell[2] = index;\n }\n } else if (token.type === 'tableCellDivider') {\n if (inFirstCellAwaitingPipe) {\n inFirstCellAwaitingPipe = false;\n } else {\n if (lastCell[1] !== 0) {\n cell[0] = cell[1];\n currentCell = flushCell(map, context, lastCell, rowKind, undefined, currentCell);\n }\n lastCell = cell;\n cell = [lastCell[1], index, 0, 0];\n }\n }\n }\n // Exit events.\n else if (token.type === 'tableHead') {\n afterHeadAwaitingFirstBodyRow = true;\n lastTableEnd = index;\n } else if (token.type === 'tableRow' || token.type === 'tableDelimiterRow') {\n lastTableEnd = index;\n if (lastCell[1] !== 0) {\n cell[0] = cell[1];\n currentCell = flushCell(map, context, lastCell, rowKind, index, currentCell);\n } else if (cell[1] !== 0) {\n currentCell = flushCell(map, context, cell, rowKind, index, currentCell);\n }\n rowKind = 0;\n } else if (rowKind && (token.type === \"data\" || token.type === 'tableDelimiterMarker' || token.type === 'tableDelimiterFiller')) {\n cell[3] = index;\n }\n }\n if (lastTableEnd !== 0) {\n flushTableEnd(map, context, lastTableEnd, currentTable, currentBody);\n }\n map.consume(context.events);\n\n // To do: move this into `html`, when events are exposed there.\n // That\u2019s what `markdown-rs` does.\n // That needs updates to `mdast-util-gfm-table`.\n index = -1;\n while (++index < context.events.length) {\n const event = context.events[index];\n if (event[0] === 'enter' && event[1].type === 'table') {\n event[1]._align = gfmTableAlign(context.events, index);\n }\n }\n return events;\n}\n\n/**\n * Generate a cell.\n *\n * @param {EditMap} map\n * @param {Readonly} context\n * @param {Readonly} range\n * @param {RowKind} rowKind\n * @param {number | undefined} rowEnd\n * @param {Token | undefined} previousCell\n * @returns {Token | undefined}\n */\n// eslint-disable-next-line max-params\nfunction flushCell(map, context, range, rowKind, rowEnd, previousCell) {\n // `markdown-rs` uses:\n // rowKind === 2 ? 'tableDelimiterCell' : 'tableCell'\n const groupName = rowKind === 1 ? 'tableHeader' : rowKind === 2 ? 'tableDelimiter' : 'tableData';\n // `markdown-rs` uses:\n // rowKind === 2 ? 'tableDelimiterCellValue' : 'tableCellText'\n const valueName = 'tableContent';\n\n // Insert an exit for the previous cell, if there is one.\n //\n // ```markdown\n // > | | aa | bb | cc |\n // ^-- exit\n // ^^^^-- this cell\n // ```\n if (range[0] !== 0) {\n previousCell.end = Object.assign({}, getPoint(context.events, range[0]));\n map.add(range[0], 0, [['exit', previousCell, context]]);\n }\n\n // Insert enter of this cell.\n //\n // ```markdown\n // > | | aa | bb | cc |\n // ^-- enter\n // ^^^^-- this cell\n // ```\n const now = getPoint(context.events, range[1]);\n previousCell = {\n type: groupName,\n start: Object.assign({}, now),\n // Note: correct end is set later.\n end: Object.assign({}, now)\n };\n map.add(range[1], 0, [['enter', previousCell, context]]);\n\n // Insert text start at first data start and end at last data end, and\n // remove events between.\n //\n // ```markdown\n // > | | aa | bb | cc |\n // ^-- enter\n // ^-- exit\n // ^^^^-- this cell\n // ```\n if (range[2] !== 0) {\n const relatedStart = getPoint(context.events, range[2]);\n const relatedEnd = getPoint(context.events, range[3]);\n /** @type {Token} */\n const valueToken = {\n type: valueName,\n start: Object.assign({}, relatedStart),\n end: Object.assign({}, relatedEnd)\n };\n map.add(range[2], 0, [['enter', valueToken, context]]);\n if (rowKind !== 2) {\n // Fix positional info on remaining events\n const start = context.events[range[2]];\n const end = context.events[range[3]];\n start[1].end = Object.assign({}, end[1].end);\n start[1].type = \"chunkText\";\n start[1].contentType = \"text\";\n\n // Remove if needed.\n if (range[3] > range[2] + 1) {\n const a = range[2] + 1;\n const b = range[3] - range[2] - 1;\n map.add(a, b, []);\n }\n }\n map.add(range[3] + 1, 0, [['exit', valueToken, context]]);\n }\n\n // Insert an exit for the last cell, if at the row end.\n //\n // ```markdown\n // > | | aa | bb | cc |\n // ^-- exit\n // ^^^^^^-- this cell (the last one contains two \u201Cbetween\u201D parts)\n // ```\n if (rowEnd !== undefined) {\n previousCell.end = Object.assign({}, getPoint(context.events, rowEnd));\n map.add(rowEnd, 0, [['exit', previousCell, context]]);\n previousCell = undefined;\n }\n return previousCell;\n}\n\n/**\n * Generate table end (and table body end).\n *\n * @param {Readonly} map\n * @param {Readonly} context\n * @param {number} index\n * @param {Token} table\n * @param {Token | undefined} tableBody\n */\n// eslint-disable-next-line max-params\nfunction flushTableEnd(map, context, index, table, tableBody) {\n /** @type {Array} */\n const exits = [];\n const related = getPoint(context.events, index);\n if (tableBody) {\n tableBody.end = Object.assign({}, related);\n exits.push(['exit', tableBody, context]);\n }\n table.end = Object.assign({}, related);\n exits.push(['exit', table, context]);\n map.add(index + 1, 0, exits);\n}\n\n/**\n * @param {Readonly>} events\n * @param {number} index\n * @returns {Readonly}\n */\nfunction getPoint(events, index) {\n const event = events[index];\n const side = event[0] === 'enter' ? 'start' : 'end';\n return event[1][side];\n}", "/**\n * @import {Extension, State, TokenizeContext, Tokenizer} from 'micromark-util-types'\n */\n\nimport { factorySpace } from 'micromark-factory-space';\nimport { markdownLineEnding, markdownLineEndingOrSpace, markdownSpace } from 'micromark-util-character';\nconst tasklistCheck = {\n name: 'tasklistCheck',\n tokenize: tokenizeTasklistCheck\n};\n\n/**\n * Create an HTML extension for `micromark` to support GFM task list items\n * syntax.\n *\n * @returns {Extension}\n * Extension for `micromark` that can be passed in `htmlExtensions` to\n * support GFM task list items when serializing to HTML.\n */\nexport function gfmTaskListItem() {\n return {\n text: {\n [91]: tasklistCheck\n }\n };\n}\n\n/**\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction tokenizeTasklistCheck(effects, ok, nok) {\n const self = this;\n return open;\n\n /**\n * At start of task list item check.\n *\n * ```markdown\n * > | * [x] y.\n * ^\n * ```\n *\n * @type {State}\n */\n function open(code) {\n if (\n // Exit if there\u2019s stuff before.\n self.previous !== null ||\n // Exit if not in the first content that is the first child of a list\n // item.\n !self._gfmTasklistFirstContentOfListItem) {\n return nok(code);\n }\n effects.enter('taskListCheck');\n effects.enter('taskListCheckMarker');\n effects.consume(code);\n effects.exit('taskListCheckMarker');\n return inside;\n }\n\n /**\n * In task list item check.\n *\n * ```markdown\n * > | * [x] y.\n * ^\n * ```\n *\n * @type {State}\n */\n function inside(code) {\n // Currently we match how GH works in files.\n // To match how GH works in comments, use `markdownSpace` (`[\\t ]`) instead\n // of `markdownLineEndingOrSpace` (`[\\t\\n\\r ]`).\n if (markdownLineEndingOrSpace(code)) {\n effects.enter('taskListCheckValueUnchecked');\n effects.consume(code);\n effects.exit('taskListCheckValueUnchecked');\n return close;\n }\n if (code === 88 || code === 120) {\n effects.enter('taskListCheckValueChecked');\n effects.consume(code);\n effects.exit('taskListCheckValueChecked');\n return close;\n }\n return nok(code);\n }\n\n /**\n * At close of task list item check.\n *\n * ```markdown\n * > | * [x] y.\n * ^\n * ```\n *\n * @type {State}\n */\n function close(code) {\n if (code === 93) {\n effects.enter('taskListCheckMarker');\n effects.consume(code);\n effects.exit('taskListCheckMarker');\n effects.exit('taskListCheck');\n return after;\n }\n return nok(code);\n }\n\n /**\n * @type {State}\n */\n function after(code) {\n // EOL in paragraph means there must be something else after it.\n if (markdownLineEnding(code)) {\n return ok(code);\n }\n\n // Space or tab?\n // Check what comes after.\n if (markdownSpace(code)) {\n return effects.check({\n tokenize: spaceThenNonSpace\n }, ok, nok)(code);\n }\n\n // EOF, or non-whitespace, both wrong.\n return nok(code);\n }\n}\n\n/**\n * @this {TokenizeContext}\n * @type {Tokenizer}\n */\nfunction spaceThenNonSpace(effects, ok, nok) {\n return factorySpace(effects, after, \"whitespace\");\n\n /**\n * After whitespace, after task list item check.\n *\n * ```markdown\n * > | * [x] y.\n * ^\n * ```\n *\n * @type {State}\n */\n function after(code) {\n // EOF means there was nothing, so bad.\n // EOL means there\u2019s content after it, so good.\n // Impossible to have more spaces.\n // Anything else is good.\n return code === null ? nok(code) : ok(code);\n }\n}", "/**\n * @typedef {import('micromark-extension-gfm-footnote').HtmlOptions} HtmlOptions\n * @typedef {import('micromark-extension-gfm-strikethrough').Options} Options\n * @typedef {import('micromark-util-types').Extension} Extension\n * @typedef {import('micromark-util-types').HtmlExtension} HtmlExtension\n */\n\nimport {\n combineExtensions,\n combineHtmlExtensions\n} from 'micromark-util-combine-extensions'\nimport {\n gfmAutolinkLiteral,\n gfmAutolinkLiteralHtml\n} from 'micromark-extension-gfm-autolink-literal'\nimport {gfmFootnote, gfmFootnoteHtml} from 'micromark-extension-gfm-footnote'\nimport {\n gfmStrikethrough,\n gfmStrikethroughHtml\n} from 'micromark-extension-gfm-strikethrough'\nimport {gfmTable, gfmTableHtml} from 'micromark-extension-gfm-table'\nimport {gfmTagfilterHtml} from 'micromark-extension-gfm-tagfilter'\nimport {\n gfmTaskListItem,\n gfmTaskListItemHtml\n} from 'micromark-extension-gfm-task-list-item'\n\n/**\n * Create an extension for `micromark` to enable GFM syntax.\n *\n * @param {Options | null | undefined} [options]\n * Configuration (optional).\n *\n * Passed to `micromark-extens-gfm-strikethrough`.\n * @returns {Extension}\n * Extension for `micromark` that can be passed in `extensions` to enable GFM\n * syntax.\n */\nexport function gfm(options) {\n return combineExtensions([\n gfmAutolinkLiteral(),\n gfmFootnote(),\n gfmStrikethrough(options),\n gfmTable(),\n gfmTaskListItem()\n ])\n}\n\n/**\n * Create an extension for `micromark` to support GFM when serializing to HTML.\n *\n * @param {HtmlOptions | null | undefined} [options]\n * Configuration (optional).\n *\n * Passed to `micromark-extens-gfm-footnote`.\n * @returns {HtmlExtension}\n * Extension for `micromark` that can be passed in `htmlExtensions` to\n * support GFM when serializing to HTML.\n */\nexport function gfmHtml(options) {\n return combineHtmlExtensions([\n gfmAutolinkLiteralHtml(),\n gfmFootnoteHtml(options),\n gfmStrikethroughHtml(),\n gfmTableHtml(),\n gfmTagfilterHtml(),\n gfmTaskListItemHtml()\n ])\n}\n", "/**\n * @import {Root} from 'mdast'\n * @import {Options} from 'remark-gfm'\n * @import {} from 'remark-parse'\n * @import {} from 'remark-stringify'\n * @import {Processor} from 'unified'\n */\n\nimport {gfmFromMarkdown, gfmToMarkdown} from 'mdast-util-gfm'\nimport {gfm} from 'micromark-extension-gfm'\n\n/** @type {Options} */\nconst emptyOptions = {}\n\n/**\n * Add support GFM (autolink literals, footnotes, strikethrough, tables,\n * tasklists).\n *\n * @param {Options | null | undefined} [options]\n * Configuration (optional).\n * @returns {undefined}\n * Nothing.\n */\nexport default function remarkGfm(options) {\n // @ts-expect-error: TS is wrong about `this`.\n // eslint-disable-next-line unicorn/no-this-assignment\n const self = /** @type {Processor} */ (this)\n const settings = options || emptyOptions\n const data = self.data()\n\n const micromarkExtensions =\n data.micromarkExtensions || (data.micromarkExtensions = [])\n const fromMarkdownExtensions =\n data.fromMarkdownExtensions || (data.fromMarkdownExtensions = [])\n const toMarkdownExtensions =\n data.toMarkdownExtensions || (data.toMarkdownExtensions = [])\n\n micromarkExtensions.push(gfm(settings))\n fromMarkdownExtensions.push(gfmFromMarkdown())\n toMarkdownExtensions.push(gfmToMarkdown(settings))\n}\n", "/**\n * @import {Element} from 'hast'\n * @import {Blockquote} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `blockquote` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {Blockquote} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function blockquote(state, node) {\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'blockquote',\n properties: {},\n children: state.wrap(state.all(node), true)\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n", "/**\n * @import {Element, Text} from 'hast'\n * @import {Break} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `break` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {Break} node\n * mdast node.\n * @returns {Array}\n * hast element content.\n */\nexport function hardBreak(state, node) {\n /** @type {Element} */\n const result = {type: 'element', tagName: 'br', properties: {}, children: []}\n state.patch(node, result)\n return [state.applyData(node, result), {type: 'text', value: '\\n'}]\n}\n", "/**\n * @import {Element, Properties} from 'hast'\n * @import {Code} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `code` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {Code} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function code(state, node) {\n const value = node.value ? node.value + '\\n' : ''\n /** @type {Properties} */\n const properties = {}\n // Someone can write `js python ruby`.\n const language = node.lang ? node.lang.split(/\\s+/) : []\n\n // GH/CM still drop the non-first languages.\n if (language.length > 0) {\n properties.className = ['language-' + language[0]]\n }\n\n // Create ``.\n /** @type {Element} */\n let result = {\n type: 'element',\n tagName: 'code',\n properties,\n children: [{type: 'text', value}]\n }\n\n if (node.meta) {\n result.data = {meta: node.meta}\n }\n\n state.patch(node, result)\n result = state.applyData(node, result)\n\n // Create `
`.\n  result = {type: 'element', tagName: 'pre', properties: {}, children: [result]}\n  state.patch(node, result)\n  return result\n}\n", "/**\n * @import {Element} from 'hast'\n * @import {Delete} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `delete` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {Delete} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function strikethrough(state, node) {\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: 'del',\n    properties: {},\n    children: state.all(node)\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Element} from 'hast'\n * @import {Emphasis} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `emphasis` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {Emphasis} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function emphasis(state, node) {\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: 'em',\n    properties: {},\n    children: state.all(node)\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Element} from 'hast'\n * @import {FootnoteReference} from 'mdast'\n * @import {State} from '../state.js'\n */\n\nimport {normalizeUri} from 'micromark-util-sanitize-uri'\n\n/**\n * Turn an mdast `footnoteReference` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {FootnoteReference} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function footnoteReference(state, node) {\n  const clobberPrefix =\n    typeof state.options.clobberPrefix === 'string'\n      ? state.options.clobberPrefix\n      : 'user-content-'\n  const id = String(node.identifier).toUpperCase()\n  const safeId = normalizeUri(id.toLowerCase())\n  const index = state.footnoteOrder.indexOf(id)\n  /** @type {number} */\n  let counter\n\n  let reuseCounter = state.footnoteCounts.get(id)\n\n  if (reuseCounter === undefined) {\n    reuseCounter = 0\n    state.footnoteOrder.push(id)\n    counter = state.footnoteOrder.length\n  } else {\n    counter = index + 1\n  }\n\n  reuseCounter += 1\n  state.footnoteCounts.set(id, reuseCounter)\n\n  /** @type {Element} */\n  const link = {\n    type: 'element',\n    tagName: 'a',\n    properties: {\n      href: '#' + clobberPrefix + 'fn-' + safeId,\n      id:\n        clobberPrefix +\n        'fnref-' +\n        safeId +\n        (reuseCounter > 1 ? '-' + reuseCounter : ''),\n      dataFootnoteRef: true,\n      ariaDescribedBy: ['footnote-label']\n    },\n    children: [{type: 'text', value: String(counter)}]\n  }\n  state.patch(node, link)\n\n  /** @type {Element} */\n  const sup = {\n    type: 'element',\n    tagName: 'sup',\n    properties: {},\n    children: [link]\n  }\n  state.patch(node, sup)\n  return state.applyData(node, sup)\n}\n", "/**\n * @import {Element} from 'hast'\n * @import {Heading} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `heading` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {Heading} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function heading(state, node) {\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: 'h' + node.depth,\n    properties: {},\n    children: state.all(node)\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Element} from 'hast'\n * @import {Html} from 'mdast'\n * @import {State} from '../state.js'\n * @import {Raw} from '../../index.js'\n */\n\n/**\n * Turn an mdast `html` node into hast (`raw` node in dangerous mode, otherwise\n * nothing).\n *\n * @param {State} state\n *   Info passed around.\n * @param {Html} node\n *   mdast node.\n * @returns {Element | Raw | undefined}\n *   hast node.\n */\nexport function html(state, node) {\n  if (state.options.allowDangerousHtml) {\n    /** @type {Raw} */\n    const result = {type: 'raw', value: node.value}\n    state.patch(node, result)\n    return state.applyData(node, result)\n  }\n\n  return undefined\n}\n", "/**\n * @import {ElementContent} from 'hast'\n * @import {Reference, Nodes} from 'mdast'\n * @import {State} from './state.js'\n */\n\n/**\n * Return the content of a reference without definition as plain text.\n *\n * @param {State} state\n *   Info passed around.\n * @param {Extract} node\n *   Reference node (image, link).\n * @returns {Array}\n *   hast content.\n */\nexport function revert(state, node) {\n  const subtype = node.referenceType\n  let suffix = ']'\n\n  if (subtype === 'collapsed') {\n    suffix += '[]'\n  } else if (subtype === 'full') {\n    suffix += '[' + (node.label || node.identifier) + ']'\n  }\n\n  if (node.type === 'imageReference') {\n    return [{type: 'text', value: '![' + node.alt + suffix}]\n  }\n\n  const contents = state.all(node)\n  const head = contents[0]\n\n  if (head && head.type === 'text') {\n    head.value = '[' + head.value\n  } else {\n    contents.unshift({type: 'text', value: '['})\n  }\n\n  const tail = contents[contents.length - 1]\n\n  if (tail && tail.type === 'text') {\n    tail.value += suffix\n  } else {\n    contents.push({type: 'text', value: suffix})\n  }\n\n  return contents\n}\n", "/**\n * @import {ElementContent, Element, Properties} from 'hast'\n * @import {ImageReference} from 'mdast'\n * @import {State} from '../state.js'\n */\n\nimport {normalizeUri} from 'micromark-util-sanitize-uri'\nimport {revert} from '../revert.js'\n\n/**\n * Turn an mdast `imageReference` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {ImageReference} node\n *   mdast node.\n * @returns {Array | ElementContent}\n *   hast node.\n */\nexport function imageReference(state, node) {\n  const id = String(node.identifier).toUpperCase()\n  const definition = state.definitionById.get(id)\n\n  if (!definition) {\n    return revert(state, node)\n  }\n\n  /** @type {Properties} */\n  const properties = {src: normalizeUri(definition.url || ''), alt: node.alt}\n\n  if (definition.title !== null && definition.title !== undefined) {\n    properties.title = definition.title\n  }\n\n  /** @type {Element} */\n  const result = {type: 'element', tagName: 'img', properties, children: []}\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Element, Properties} from 'hast'\n * @import {Image} from 'mdast'\n * @import {State} from '../state.js'\n */\n\nimport {normalizeUri} from 'micromark-util-sanitize-uri'\n\n/**\n * Turn an mdast `image` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {Image} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function image(state, node) {\n  /** @type {Properties} */\n  const properties = {src: normalizeUri(node.url)}\n\n  if (node.alt !== null && node.alt !== undefined) {\n    properties.alt = node.alt\n  }\n\n  if (node.title !== null && node.title !== undefined) {\n    properties.title = node.title\n  }\n\n  /** @type {Element} */\n  const result = {type: 'element', tagName: 'img', properties, children: []}\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Element, Text} from 'hast'\n * @import {InlineCode} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `inlineCode` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {InlineCode} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function inlineCode(state, node) {\n  /** @type {Text} */\n  const text = {type: 'text', value: node.value.replace(/\\r?\\n|\\r/g, ' ')}\n  state.patch(node, text)\n\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: 'code',\n    properties: {},\n    children: [text]\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {ElementContent, Element, Properties} from 'hast'\n * @import {LinkReference} from 'mdast'\n * @import {State} from '../state.js'\n */\n\nimport {normalizeUri} from 'micromark-util-sanitize-uri'\nimport {revert} from '../revert.js'\n\n/**\n * Turn an mdast `linkReference` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {LinkReference} node\n *   mdast node.\n * @returns {Array | ElementContent}\n *   hast node.\n */\nexport function linkReference(state, node) {\n  const id = String(node.identifier).toUpperCase()\n  const definition = state.definitionById.get(id)\n\n  if (!definition) {\n    return revert(state, node)\n  }\n\n  /** @type {Properties} */\n  const properties = {href: normalizeUri(definition.url || '')}\n\n  if (definition.title !== null && definition.title !== undefined) {\n    properties.title = definition.title\n  }\n\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: 'a',\n    properties,\n    children: state.all(node)\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Element, Properties} from 'hast'\n * @import {Link} from 'mdast'\n * @import {State} from '../state.js'\n */\n\nimport {normalizeUri} from 'micromark-util-sanitize-uri'\n\n/**\n * Turn an mdast `link` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {Link} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function link(state, node) {\n  /** @type {Properties} */\n  const properties = {href: normalizeUri(node.url)}\n\n  if (node.title !== null && node.title !== undefined) {\n    properties.title = node.title\n  }\n\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: 'a',\n    properties,\n    children: state.all(node)\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {ElementContent, Element, Properties} from 'hast'\n * @import {ListItem, Parents} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `listItem` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {ListItem} node\n *   mdast node.\n * @param {Parents | undefined} parent\n *   Parent of `node`.\n * @returns {Element}\n *   hast node.\n */\nexport function listItem(state, node, parent) {\n  const results = state.all(node)\n  const loose = parent ? listLoose(parent) : listItemLoose(node)\n  /** @type {Properties} */\n  const properties = {}\n  /** @type {Array} */\n  const children = []\n\n  if (typeof node.checked === 'boolean') {\n    const head = results[0]\n    /** @type {Element} */\n    let paragraph\n\n    if (head && head.type === 'element' && head.tagName === 'p') {\n      paragraph = head\n    } else {\n      paragraph = {type: 'element', tagName: 'p', properties: {}, children: []}\n      results.unshift(paragraph)\n    }\n\n    if (paragraph.children.length > 0) {\n      paragraph.children.unshift({type: 'text', value: ' '})\n    }\n\n    paragraph.children.unshift({\n      type: 'element',\n      tagName: 'input',\n      properties: {type: 'checkbox', checked: node.checked, disabled: true},\n      children: []\n    })\n\n    // According to github-markdown-css, this class hides bullet.\n    // See: .\n    properties.className = ['task-list-item']\n  }\n\n  let index = -1\n\n  while (++index < results.length) {\n    const child = results[index]\n\n    // Add eols before nodes, except if this is a loose, first paragraph.\n    if (\n      loose ||\n      index !== 0 ||\n      child.type !== 'element' ||\n      child.tagName !== 'p'\n    ) {\n      children.push({type: 'text', value: '\\n'})\n    }\n\n    if (child.type === 'element' && child.tagName === 'p' && !loose) {\n      children.push(...child.children)\n    } else {\n      children.push(child)\n    }\n  }\n\n  const tail = results[results.length - 1]\n\n  // Add a final eol.\n  if (tail && (loose || tail.type !== 'element' || tail.tagName !== 'p')) {\n    children.push({type: 'text', value: '\\n'})\n  }\n\n  /** @type {Element} */\n  const result = {type: 'element', tagName: 'li', properties, children}\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n\n/**\n * @param {Parents} node\n * @return {Boolean}\n */\nfunction listLoose(node) {\n  let loose = false\n  if (node.type === 'list') {\n    loose = node.spread || false\n    const children = node.children\n    let index = -1\n\n    while (!loose && ++index < children.length) {\n      loose = listItemLoose(children[index])\n    }\n  }\n\n  return loose\n}\n\n/**\n * @param {ListItem} node\n * @return {Boolean}\n */\nfunction listItemLoose(node) {\n  const spread = node.spread\n\n  return spread === null || spread === undefined\n    ? node.children.length > 1\n    : spread\n}\n", "/**\n * @import {Element, Properties} from 'hast'\n * @import {List} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `list` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {List} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function list(state, node) {\n  /** @type {Properties} */\n  const properties = {}\n  const results = state.all(node)\n  let index = -1\n\n  if (typeof node.start === 'number' && node.start !== 1) {\n    properties.start = node.start\n  }\n\n  // Like GitHub, add a class for custom styling.\n  while (++index < results.length) {\n    const child = results[index]\n\n    if (\n      child.type === 'element' &&\n      child.tagName === 'li' &&\n      child.properties &&\n      Array.isArray(child.properties.className) &&\n      child.properties.className.includes('task-list-item')\n    ) {\n      properties.className = ['contains-task-list']\n      break\n    }\n  }\n\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: node.ordered ? 'ol' : 'ul',\n    properties,\n    children: state.wrap(results, true)\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Element} from 'hast'\n * @import {Paragraph} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `paragraph` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {Paragraph} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function paragraph(state, node) {\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: 'p',\n    properties: {},\n    children: state.all(node)\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Parents as HastParents, Root as HastRoot} from 'hast'\n * @import {Root as MdastRoot} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `root` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {MdastRoot} node\n *   mdast node.\n * @returns {HastParents}\n *   hast node.\n */\nexport function root(state, node) {\n  /** @type {HastRoot} */\n  const result = {type: 'root', children: state.wrap(state.all(node))}\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Element} from 'hast'\n * @import {Strong} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `strong` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {Strong} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function strong(state, node) {\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: 'strong',\n    properties: {},\n    children: state.all(node)\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Table} from 'mdast'\n * @import {Element} from 'hast'\n * @import {State} from '../state.js'\n */\n\nimport {pointEnd, pointStart} from 'unist-util-position'\n\n/**\n * Turn an mdast `table` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {Table} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function table(state, node) {\n  const rows = state.all(node)\n  const firstRow = rows.shift()\n  /** @type {Array} */\n  const tableContent = []\n\n  if (firstRow) {\n    /** @type {Element} */\n    const head = {\n      type: 'element',\n      tagName: 'thead',\n      properties: {},\n      children: state.wrap([firstRow], true)\n    }\n    state.patch(node.children[0], head)\n    tableContent.push(head)\n  }\n\n  if (rows.length > 0) {\n    /** @type {Element} */\n    const body = {\n      type: 'element',\n      tagName: 'tbody',\n      properties: {},\n      children: state.wrap(rows, true)\n    }\n\n    const start = pointStart(node.children[1])\n    const end = pointEnd(node.children[node.children.length - 1])\n    if (start && end) body.position = {start, end}\n    tableContent.push(body)\n  }\n\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: 'table',\n    properties: {},\n    children: state.wrap(tableContent, true)\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Element, ElementContent, Properties} from 'hast'\n * @import {Parents, TableRow} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `tableRow` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {TableRow} node\n *   mdast node.\n * @param {Parents | undefined} parent\n *   Parent of `node`.\n * @returns {Element}\n *   hast node.\n */\nexport function tableRow(state, node, parent) {\n  const siblings = parent ? parent.children : undefined\n  // Generate a body row when without parent.\n  const rowIndex = siblings ? siblings.indexOf(node) : 1\n  const tagName = rowIndex === 0 ? 'th' : 'td'\n  // To do: option to use `style`?\n  const align = parent && parent.type === 'table' ? parent.align : undefined\n  const length = align ? align.length : node.children.length\n  let cellIndex = -1\n  /** @type {Array} */\n  const cells = []\n\n  while (++cellIndex < length) {\n    // Note: can also be undefined.\n    const cell = node.children[cellIndex]\n    /** @type {Properties} */\n    const properties = {}\n    const alignValue = align ? align[cellIndex] : undefined\n\n    if (alignValue) {\n      properties.align = alignValue\n    }\n\n    /** @type {Element} */\n    let result = {type: 'element', tagName, properties, children: []}\n\n    if (cell) {\n      result.children = state.all(cell)\n      state.patch(cell, result)\n      result = state.applyData(cell, result)\n    }\n\n    cells.push(result)\n  }\n\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: 'tr',\n    properties: {},\n    children: state.wrap(cells, true)\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Element} from 'hast'\n * @import {TableCell} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `tableCell` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {TableCell} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function tableCell(state, node) {\n  // Note: this function is normally not called: see `table-row` for how rows\n  // and their cells are compiled.\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: 'td', // Assume body cell.\n    properties: {},\n    children: state.all(node)\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "const tab = 9 /* `\\t` */\nconst space = 32 /* ` ` */\n\n/**\n * Remove initial and final spaces and tabs at the line breaks in `value`.\n * Does not trim initial and final spaces and tabs of the value itself.\n *\n * @param {string} value\n *   Value to trim.\n * @returns {string}\n *   Trimmed value.\n */\nexport function trimLines(value) {\n  const source = String(value)\n  const search = /\\r?\\n|\\r/g\n  let match = search.exec(source)\n  let last = 0\n  /** @type {Array} */\n  const lines = []\n\n  while (match) {\n    lines.push(\n      trimLine(source.slice(last, match.index), last > 0, true),\n      match[0]\n    )\n\n    last = match.index + match[0].length\n    match = search.exec(source)\n  }\n\n  lines.push(trimLine(source.slice(last), last > 0, false))\n\n  return lines.join('')\n}\n\n/**\n * @param {string} value\n *   Line to trim.\n * @param {boolean} start\n *   Whether to trim the start of the line.\n * @param {boolean} end\n *   Whether to trim the end of the line.\n * @returns {string}\n *   Trimmed line.\n */\nfunction trimLine(value, start, end) {\n  let startIndex = 0\n  let endIndex = value.length\n\n  if (start) {\n    let code = value.codePointAt(startIndex)\n\n    while (code === tab || code === space) {\n      startIndex++\n      code = value.codePointAt(startIndex)\n    }\n  }\n\n  if (end) {\n    let code = value.codePointAt(endIndex - 1)\n\n    while (code === tab || code === space) {\n      endIndex--\n      code = value.codePointAt(endIndex - 1)\n    }\n  }\n\n  return endIndex > startIndex ? value.slice(startIndex, endIndex) : ''\n}\n", "/**\n * @import {Element as HastElement, Text as HastText} from 'hast'\n * @import {Text as MdastText} from 'mdast'\n * @import {State} from '../state.js'\n */\n\nimport {trimLines} from 'trim-lines'\n\n/**\n * Turn an mdast `text` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {MdastText} node\n *   mdast node.\n * @returns {HastElement | HastText}\n *   hast node.\n */\nexport function text(state, node) {\n  /** @type {HastText} */\n  const result = {type: 'text', value: trimLines(String(node.value))}\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Element} from 'hast'\n * @import {ThematicBreak} from 'mdast'\n * @import {State} from '../state.js'\n */\n\n/**\n * Turn an mdast `thematicBreak` node into hast.\n *\n * @param {State} state\n *   Info passed around.\n * @param {ThematicBreak} node\n *   mdast node.\n * @returns {Element}\n *   hast node.\n */\nexport function thematicBreak(state, node) {\n  /** @type {Element} */\n  const result = {\n    type: 'element',\n    tagName: 'hr',\n    properties: {},\n    children: []\n  }\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n", "/**\n * @import {Handlers} from '../state.js'\n */\n\nimport {blockquote} from './blockquote.js'\nimport {hardBreak} from './break.js'\nimport {code} from './code.js'\nimport {strikethrough} from './delete.js'\nimport {emphasis} from './emphasis.js'\nimport {footnoteReference} from './footnote-reference.js'\nimport {heading} from './heading.js'\nimport {html} from './html.js'\nimport {imageReference} from './image-reference.js'\nimport {image} from './image.js'\nimport {inlineCode} from './inline-code.js'\nimport {linkReference} from './link-reference.js'\nimport {link} from './link.js'\nimport {listItem} from './list-item.js'\nimport {list} from './list.js'\nimport {paragraph} from './paragraph.js'\nimport {root} from './root.js'\nimport {strong} from './strong.js'\nimport {table} from './table.js'\nimport {tableRow} from './table-row.js'\nimport {tableCell} from './table-cell.js'\nimport {text} from './text.js'\nimport {thematicBreak} from './thematic-break.js'\n\n/**\n * Default handlers for nodes.\n *\n * @satisfies {Handlers}\n */\nexport const handlers = {\n  blockquote,\n  break: hardBreak,\n  code,\n  delete: strikethrough,\n  emphasis,\n  footnoteReference,\n  heading,\n  html,\n  imageReference,\n  image,\n  inlineCode,\n  linkReference,\n  link,\n  listItem,\n  list,\n  paragraph,\n  // @ts-expect-error: root is different, but hard to type.\n  root,\n  strong,\n  table,\n  tableCell,\n  tableRow,\n  text,\n  thematicBreak,\n  toml: ignore,\n  yaml: ignore,\n  definition: ignore,\n  footnoteDefinition: ignore\n}\n\n// Return nothing for nodes that are ignored.\nfunction ignore() {\n  return undefined\n}\n", "import {\n  VOID, PRIMITIVE,\n  ARRAY, OBJECT,\n  DATE, REGEXP, MAP, SET,\n  ERROR, BIGINT\n} from './types.js';\n\nconst env = typeof self === 'object' ? self : globalThis;\n\nconst deserializer = ($, _) => {\n  const as = (out, index) => {\n    $.set(index, out);\n    return out;\n  };\n\n  const unpair = index => {\n    if ($.has(index))\n      return $.get(index);\n\n    const [type, value] = _[index];\n    switch (type) {\n      case PRIMITIVE:\n      case VOID:\n        return as(value, index);\n      case ARRAY: {\n        const arr = as([], index);\n        for (const index of value)\n          arr.push(unpair(index));\n        return arr;\n      }\n      case OBJECT: {\n        const object = as({}, index);\n        for (const [key, index] of value)\n          object[unpair(key)] = unpair(index);\n        return object;\n      }\n      case DATE:\n        return as(new Date(value), index);\n      case REGEXP: {\n        const {source, flags} = value;\n        return as(new RegExp(source, flags), index);\n      }\n      case MAP: {\n        const map = as(new Map, index);\n        for (const [key, index] of value)\n          map.set(unpair(key), unpair(index));\n        return map;\n      }\n      case SET: {\n        const set = as(new Set, index);\n        for (const index of value)\n          set.add(unpair(index));\n        return set;\n      }\n      case ERROR: {\n        const {name, message} = value;\n        return as(new env[name](message), index);\n      }\n      case BIGINT:\n        return as(BigInt(value), index);\n      case 'BigInt':\n        return as(Object(BigInt(value)), index);\n      case 'ArrayBuffer':\n        return as(new Uint8Array(value).buffer, value);\n      case 'DataView': {\n        const { buffer } = new Uint8Array(value);\n        return as(new DataView(buffer), value);\n      }\n    }\n    return as(new env[type](value), index);\n  };\n\n  return unpair;\n};\n\n/**\n * @typedef {Array} Record a type representation\n */\n\n/**\n * Returns a deserialized value from a serialized array of Records.\n * @param {Record[]} serialized a previously serialized value.\n * @returns {any}\n */\nexport const deserialize = serialized => deserializer(new Map, serialized)(0);\n", "import {\n  VOID, PRIMITIVE,\n  ARRAY, OBJECT,\n  DATE, REGEXP, MAP, SET,\n  ERROR, BIGINT\n} from './types.js';\n\nconst EMPTY = '';\n\nconst {toString} = {};\nconst {keys} = Object;\n\nconst typeOf = value => {\n  const type = typeof value;\n  if (type !== 'object' || !value)\n    return [PRIMITIVE, type];\n\n  const asString = toString.call(value).slice(8, -1);\n  switch (asString) {\n    case 'Array':\n      return [ARRAY, EMPTY];\n    case 'Object':\n      return [OBJECT, EMPTY];\n    case 'Date':\n      return [DATE, EMPTY];\n    case 'RegExp':\n      return [REGEXP, EMPTY];\n    case 'Map':\n      return [MAP, EMPTY];\n    case 'Set':\n      return [SET, EMPTY];\n    case 'DataView':\n      return [ARRAY, asString];\n  }\n\n  if (asString.includes('Array'))\n    return [ARRAY, asString];\n\n  if (asString.includes('Error'))\n    return [ERROR, asString];\n\n  return [OBJECT, asString];\n};\n\nconst shouldSkip = ([TYPE, type]) => (\n  TYPE === PRIMITIVE &&\n  (type === 'function' || type === 'symbol')\n);\n\nconst serializer = (strict, json, $, _) => {\n\n  const as = (out, value) => {\n    const index = _.push(out) - 1;\n    $.set(value, index);\n    return index;\n  };\n\n  const pair = value => {\n    if ($.has(value))\n      return $.get(value);\n\n    let [TYPE, type] = typeOf(value);\n    switch (TYPE) {\n      case PRIMITIVE: {\n        let entry = value;\n        switch (type) {\n          case 'bigint':\n            TYPE = BIGINT;\n            entry = value.toString();\n            break;\n          case 'function':\n          case 'symbol':\n            if (strict)\n              throw new TypeError('unable to serialize ' + type);\n            entry = null;\n            break;\n          case 'undefined':\n            return as([VOID], value);\n        }\n        return as([TYPE, entry], value);\n      }\n      case ARRAY: {\n        if (type) {\n          let spread = value;\n          if (type === 'DataView') {\n            spread = new Uint8Array(value.buffer);\n          }\n          else if (type === 'ArrayBuffer') {\n            spread = new Uint8Array(value);\n          }\n          return as([type, [...spread]], value);\n        }\n\n        const arr = [];\n        const index = as([TYPE, arr], value);\n        for (const entry of value)\n          arr.push(pair(entry));\n        return index;\n      }\n      case OBJECT: {\n        if (type) {\n          switch (type) {\n            case 'BigInt':\n              return as([type, value.toString()], value);\n            case 'Boolean':\n            case 'Number':\n            case 'String':\n              return as([type, value.valueOf()], value);\n          }\n        }\n\n        if (json && ('toJSON' in value))\n          return pair(value.toJSON());\n\n        const entries = [];\n        const index = as([TYPE, entries], value);\n        for (const key of keys(value)) {\n          if (strict || !shouldSkip(typeOf(value[key])))\n            entries.push([pair(key), pair(value[key])]);\n        }\n        return index;\n      }\n      case DATE:\n        return as([TYPE, value.toISOString()], value);\n      case REGEXP: {\n        const {source, flags} = value;\n        return as([TYPE, {source, flags}], value);\n      }\n      case MAP: {\n        const entries = [];\n        const index = as([TYPE, entries], value);\n        for (const [key, entry] of value) {\n          if (strict || !(shouldSkip(typeOf(key)) || shouldSkip(typeOf(entry))))\n            entries.push([pair(key), pair(entry)]);\n        }\n        return index;\n      }\n      case SET: {\n        const entries = [];\n        const index = as([TYPE, entries], value);\n        for (const entry of value) {\n          if (strict || !shouldSkip(typeOf(entry)))\n            entries.push(pair(entry));\n        }\n        return index;\n      }\n    }\n\n    const {message} = value;\n    return as([TYPE, {name: type, message}], value);\n  };\n\n  return pair;\n};\n\n/**\n * @typedef {Array} Record a type representation\n */\n\n/**\n * Returns an array of serialized Records.\n * @param {any} value a serializable value.\n * @param {{json?: boolean, lossy?: boolean}?} options an object with a `lossy` or `json` property that,\n *  if `true`, will not throw errors on incompatible types, and behave more\n *  like JSON stringify would behave. Symbol and Function will be discarded.\n * @returns {Record[]}\n */\n export const serialize = (value, {json, lossy} = {}) => {\n  const _ = [];\n  return serializer(!(json || lossy), !!json, new Map, _)(value), _;\n};\n", "import {deserialize} from './deserialize.js';\nimport {serialize} from './serialize.js';\n\n/**\n * @typedef {Array} Record a type representation\n */\n\n/**\n * Returns an array of serialized Records.\n * @param {any} any a serializable value.\n * @param {{transfer?: any[], json?: boolean, lossy?: boolean}?} options an object with\n * a transfer option (ignored when polyfilled) and/or non standard fields that\n * fallback to the polyfill if present.\n * @returns {Record[]}\n */\nexport default typeof structuredClone === \"function\" ?\n  /* c8 ignore start */\n  (any, options) => (\n    options && ('json' in options || 'lossy' in options) ?\n      deserialize(serialize(any, options)) : structuredClone(any)\n  ) :\n  (any, options) => deserialize(serialize(any, options));\n  /* c8 ignore stop */\n\nexport {deserialize, serialize};\n", "/**\n * @import {ElementContent, Element} from 'hast'\n * @import {State} from './state.js'\n */\n\n/**\n * @callback FootnoteBackContentTemplate\n *   Generate content for the backreference dynamically.\n *\n *   For the following markdown:\n *\n *   ```markdown\n *   Alpha[^micromark], bravo[^micromark], and charlie[^remark].\n *\n *   [^remark]: things about remark\n *   [^micromark]: things about micromark\n *   ```\n *\n *   This function will be called with:\n *\n *   *  `0` and `0` for the backreference from `things about micromark` to\n *      `alpha`, as it is the first used definition, and the first call to it\n *   *  `0` and `1` for the backreference from `things about micromark` to\n *      `bravo`, as it is the first used definition, and the second call to it\n *   *  `1` and `0` for the backreference from `things about remark` to\n *      `charlie`, as it is the second used definition\n * @param {number} referenceIndex\n *   Index of the definition in the order that they are first referenced,\n *   0-indexed.\n * @param {number} rereferenceIndex\n *   Index of calls to the same definition, 0-indexed.\n * @returns {Array | ElementContent | string}\n *   Content for the backreference when linking back from definitions to their\n *   reference.\n *\n * @callback FootnoteBackLabelTemplate\n *   Generate a back label dynamically.\n *\n *   For the following markdown:\n *\n *   ```markdown\n *   Alpha[^micromark], bravo[^micromark], and charlie[^remark].\n *\n *   [^remark]: things about remark\n *   [^micromark]: things about micromark\n *   ```\n *\n *   This function will be called with:\n *\n *   *  `0` and `0` for the backreference from `things about micromark` to\n *      `alpha`, as it is the first used definition, and the first call to it\n *   *  `0` and `1` for the backreference from `things about micromark` to\n *      `bravo`, as it is the first used definition, and the second call to it\n *   *  `1` and `0` for the backreference from `things about remark` to\n *      `charlie`, as it is the second used definition\n * @param {number} referenceIndex\n *   Index of the definition in the order that they are first referenced,\n *   0-indexed.\n * @param {number} rereferenceIndex\n *   Index of calls to the same definition, 0-indexed.\n * @returns {string}\n *   Back label to use when linking back from definitions to their reference.\n */\n\nimport structuredClone from '@ungap/structured-clone'\nimport {normalizeUri} from 'micromark-util-sanitize-uri'\n\n/**\n * Generate the default content that GitHub uses on backreferences.\n *\n * @param {number} _\n *   Index of the definition in the order that they are first referenced,\n *   0-indexed.\n * @param {number} rereferenceIndex\n *   Index of calls to the same definition, 0-indexed.\n * @returns {Array}\n *   Content.\n */\nexport function defaultFootnoteBackContent(_, rereferenceIndex) {\n  /** @type {Array} */\n  const result = [{type: 'text', value: '\u21A9'}]\n\n  if (rereferenceIndex > 1) {\n    result.push({\n      type: 'element',\n      tagName: 'sup',\n      properties: {},\n      children: [{type: 'text', value: String(rereferenceIndex)}]\n    })\n  }\n\n  return result\n}\n\n/**\n * Generate the default label that GitHub uses on backreferences.\n *\n * @param {number} referenceIndex\n *   Index of the definition in the order that they are first referenced,\n *   0-indexed.\n * @param {number} rereferenceIndex\n *   Index of calls to the same definition, 0-indexed.\n * @returns {string}\n *   Label.\n */\nexport function defaultFootnoteBackLabel(referenceIndex, rereferenceIndex) {\n  return (\n    'Back to reference ' +\n    (referenceIndex + 1) +\n    (rereferenceIndex > 1 ? '-' + rereferenceIndex : '')\n  )\n}\n\n/**\n * Generate a hast footer for called footnote definitions.\n *\n * @param {State} state\n *   Info passed around.\n * @returns {Element | undefined}\n *   `section` element or `undefined`.\n */\n// eslint-disable-next-line complexity\nexport function footer(state) {\n  const clobberPrefix =\n    typeof state.options.clobberPrefix === 'string'\n      ? state.options.clobberPrefix\n      : 'user-content-'\n  const footnoteBackContent =\n    state.options.footnoteBackContent || defaultFootnoteBackContent\n  const footnoteBackLabel =\n    state.options.footnoteBackLabel || defaultFootnoteBackLabel\n  const footnoteLabel = state.options.footnoteLabel || 'Footnotes'\n  const footnoteLabelTagName = state.options.footnoteLabelTagName || 'h2'\n  const footnoteLabelProperties = state.options.footnoteLabelProperties || {\n    className: ['sr-only']\n  }\n  /** @type {Array} */\n  const listItems = []\n  let referenceIndex = -1\n\n  while (++referenceIndex < state.footnoteOrder.length) {\n    const definition = state.footnoteById.get(\n      state.footnoteOrder[referenceIndex]\n    )\n\n    if (!definition) {\n      continue\n    }\n\n    const content = state.all(definition)\n    const id = String(definition.identifier).toUpperCase()\n    const safeId = normalizeUri(id.toLowerCase())\n    let rereferenceIndex = 0\n    /** @type {Array} */\n    const backReferences = []\n    const counts = state.footnoteCounts.get(id)\n\n    // eslint-disable-next-line no-unmodified-loop-condition\n    while (counts !== undefined && ++rereferenceIndex <= counts) {\n      if (backReferences.length > 0) {\n        backReferences.push({type: 'text', value: ' '})\n      }\n\n      let children =\n        typeof footnoteBackContent === 'string'\n          ? footnoteBackContent\n          : footnoteBackContent(referenceIndex, rereferenceIndex)\n\n      if (typeof children === 'string') {\n        children = {type: 'text', value: children}\n      }\n\n      backReferences.push({\n        type: 'element',\n        tagName: 'a',\n        properties: {\n          href:\n            '#' +\n            clobberPrefix +\n            'fnref-' +\n            safeId +\n            (rereferenceIndex > 1 ? '-' + rereferenceIndex : ''),\n          dataFootnoteBackref: '',\n          ariaLabel:\n            typeof footnoteBackLabel === 'string'\n              ? footnoteBackLabel\n              : footnoteBackLabel(referenceIndex, rereferenceIndex),\n          className: ['data-footnote-backref']\n        },\n        children: Array.isArray(children) ? children : [children]\n      })\n    }\n\n    const tail = content[content.length - 1]\n\n    if (tail && tail.type === 'element' && tail.tagName === 'p') {\n      const tailTail = tail.children[tail.children.length - 1]\n      if (tailTail && tailTail.type === 'text') {\n        tailTail.value += ' '\n      } else {\n        tail.children.push({type: 'text', value: ' '})\n      }\n\n      tail.children.push(...backReferences)\n    } else {\n      content.push(...backReferences)\n    }\n\n    /** @type {Element} */\n    const listItem = {\n      type: 'element',\n      tagName: 'li',\n      properties: {id: clobberPrefix + 'fn-' + safeId},\n      children: state.wrap(content, true)\n    }\n\n    state.patch(definition, listItem)\n\n    listItems.push(listItem)\n  }\n\n  if (listItems.length === 0) {\n    return\n  }\n\n  return {\n    type: 'element',\n    tagName: 'section',\n    properties: {dataFootnotes: true, className: ['footnotes']},\n    children: [\n      {\n        type: 'element',\n        tagName: footnoteLabelTagName,\n        properties: {\n          ...structuredClone(footnoteLabelProperties),\n          id: 'footnote-label'\n        },\n        children: [{type: 'text', value: footnoteLabel}]\n      },\n      {type: 'text', value: '\\n'},\n      {\n        type: 'element',\n        tagName: 'ol',\n        properties: {},\n        children: state.wrap(listItems, true)\n      },\n      {type: 'text', value: '\\n'}\n    ]\n  }\n}\n", "/**\n * @import {\n *   ElementContent as HastElementContent,\n *   Element as HastElement,\n *   Nodes as HastNodes,\n *   Properties as HastProperties,\n *   RootContent as HastRootContent,\n *   Text as HastText\n * } from 'hast'\n * @import {\n *   Definition as MdastDefinition,\n *   FootnoteDefinition as MdastFootnoteDefinition,\n *   Nodes as MdastNodes,\n *   Parents as MdastParents\n * } from 'mdast'\n * @import {VFile} from 'vfile'\n * @import {\n *   FootnoteBackContentTemplate,\n *   FootnoteBackLabelTemplate\n * } from './footer.js'\n */\n\n/**\n * @callback Handler\n *   Handle a node.\n * @param {State} state\n *   Info passed around.\n * @param {any} node\n *   mdast node to handle.\n * @param {MdastParents | undefined} parent\n *   Parent of `node`.\n * @returns {Array | HastElementContent | undefined}\n *   hast node.\n *\n * @typedef {Partial>} Handlers\n *   Handle nodes.\n *\n * @typedef Options\n *   Configuration (optional).\n * @property {boolean | null | undefined} [allowDangerousHtml=false]\n *   Whether to persist raw HTML in markdown in the hast tree (default:\n *   `false`).\n * @property {string | null | undefined} [clobberPrefix='user-content-']\n *   Prefix to use before the `id` property on footnotes to prevent them from\n *   *clobbering* (default: `'user-content-'`).\n *\n *   Pass `''` for trusted markdown and when you are careful with\n *   polyfilling.\n *   You could pass a different prefix.\n *\n *   DOM clobbering is this:\n *\n *   ```html\n *   
\n *   \n *   ```\n *\n *   The above example shows that elements are made available by browsers, by\n *   their ID, on the `window` object.\n *   This is a security risk because you might be expecting some other variable\n *   at that place.\n *   It can also break polyfills.\n *   Using a prefix solves these problems.\n * @property {VFile | null | undefined} [file]\n *   Corresponding virtual file representing the input document (optional).\n * @property {FootnoteBackContentTemplate | string | null | undefined} [footnoteBackContent]\n *   Content of the backreference back to references (default: `defaultFootnoteBackContent`).\n *\n *   The default value is:\n *\n *   ```js\n *   function defaultFootnoteBackContent(_, rereferenceIndex) {\n *     const result = [{type: 'text', value: '\u21A9'}]\n *\n *     if (rereferenceIndex > 1) {\n *       result.push({\n *         type: 'element',\n *         tagName: 'sup',\n *         properties: {},\n *         children: [{type: 'text', value: String(rereferenceIndex)}]\n *       })\n *     }\n *\n *     return result\n *   }\n *   ```\n *\n *   This content is used in the `a` element of each backreference (the `\u21A9`\n *   links).\n * @property {FootnoteBackLabelTemplate | string | null | undefined} [footnoteBackLabel]\n *   Label to describe the backreference back to references (default:\n *   `defaultFootnoteBackLabel`).\n *\n *   The default value is:\n *\n *   ```js\n *   function defaultFootnoteBackLabel(referenceIndex, rereferenceIndex) {\n *    return (\n *      'Back to reference ' +\n *      (referenceIndex + 1) +\n *      (rereferenceIndex > 1 ? '-' + rereferenceIndex : '')\n *    )\n *   }\n *   ```\n *\n *   Change it when the markdown is not in English.\n *\n *   This label is used in the `ariaLabel` property on each backreference\n *   (the `\u21A9` links).\n *   It affects users of assistive technology.\n * @property {string | null | undefined} [footnoteLabel='Footnotes']\n *   Textual label to use for the footnotes section (default: `'Footnotes'`).\n *\n *   Change it when the markdown is not in English.\n *\n *   This label is typically hidden visually (assuming a `sr-only` CSS class\n *   is defined that does that) and so affects screen readers only.\n *   If you do have such a class, but want to show this section to everyone,\n *   pass different properties with the `footnoteLabelProperties` option.\n * @property {HastProperties | null | undefined} [footnoteLabelProperties={className: ['sr-only']}]\n *   Properties to use on the footnote label (default: `{className:\n *   ['sr-only']}`).\n *\n *   Change it to show the label and add other properties.\n *\n *   This label is typically hidden visually (assuming an `sr-only` CSS class\n *   is defined that does that) and so affects screen readers only.\n *   If you do have such a class, but want to show this section to everyone,\n *   pass an empty string.\n *   You can also add different properties.\n *\n *   > **Note**: `id: 'footnote-label'` is always added, because footnote\n *   > calls use it with `aria-describedby` to provide an accessible label.\n * @property {string | null | undefined} [footnoteLabelTagName='h2']\n *   HTML tag name to use for the footnote label element (default: `'h2'`).\n *\n *   Change it to match your document structure.\n *\n *   This label is typically hidden visually (assuming a `sr-only` CSS class\n *   is defined that does that) and so affects screen readers only.\n *   If you do have such a class, but want to show this section to everyone,\n *   pass different properties with the `footnoteLabelProperties` option.\n * @property {Handlers | null | undefined} [handlers]\n *   Extra handlers for nodes (optional).\n * @property {Array | null | undefined} [passThrough]\n *   List of custom mdast node types to pass through (keep) in hast (note that\n *   the node itself is passed, but eventual children are transformed)\n *   (optional).\n * @property {Handler | null | undefined} [unknownHandler]\n *   Handler for all unknown nodes (optional).\n *\n * @typedef State\n *   Info passed around.\n * @property {(node: MdastNodes) => Array} all\n *   Transform the children of an mdast parent to hast.\n * @property {(from: MdastNodes, to: Type) => HastElement | Type} applyData\n *   Honor the `data` of `from`, and generate an element instead of `node`.\n * @property {Map} definitionById\n *   Definitions by their identifier.\n * @property {Map} footnoteById\n *   Footnote definitions by their identifier.\n * @property {Map} footnoteCounts\n *   Counts for how often the same footnote was called.\n * @property {Array} footnoteOrder\n *   Identifiers of order when footnote calls first appear in tree order.\n * @property {Handlers} handlers\n *   Applied handlers.\n * @property {(node: MdastNodes, parent: MdastParents | undefined) => Array | HastElementContent | undefined} one\n *   Transform an mdast node to hast.\n * @property {Options} options\n *   Configuration.\n * @property {(from: MdastNodes, node: HastNodes) => undefined} patch\n *   Copy a node\u2019s positional info.\n * @property {(nodes: Array, loose?: boolean | undefined) => Array} wrap\n *   Wrap `nodes` with line endings between each node, adds initial/final line endings when `loose`.\n */\n\nimport structuredClone from '@ungap/structured-clone'\nimport {visit} from 'unist-util-visit'\nimport {position} from 'unist-util-position'\nimport {handlers as defaultHandlers} from './handlers/index.js'\n\nconst own = {}.hasOwnProperty\n\n/** @type {Options} */\nconst emptyOptions = {}\n\n/**\n * Create `state` from an mdast tree.\n *\n * @param {MdastNodes} tree\n *   mdast node to transform.\n * @param {Options | null | undefined} [options]\n *   Configuration (optional).\n * @returns {State}\n *   `state` function.\n */\nexport function createState(tree, options) {\n  const settings = options || emptyOptions\n  /** @type {Map} */\n  const definitionById = new Map()\n  /** @type {Map} */\n  const footnoteById = new Map()\n  /** @type {Map} */\n  const footnoteCounts = new Map()\n  /** @type {Handlers} */\n  // @ts-expect-error: the root handler returns a root.\n  // Hard to type.\n  const handlers = {...defaultHandlers, ...settings.handlers}\n\n  /** @type {State} */\n  const state = {\n    all,\n    applyData,\n    definitionById,\n    footnoteById,\n    footnoteCounts,\n    footnoteOrder: [],\n    handlers,\n    one,\n    options: settings,\n    patch,\n    wrap\n  }\n\n  visit(tree, function (node) {\n    if (node.type === 'definition' || node.type === 'footnoteDefinition') {\n      const map = node.type === 'definition' ? definitionById : footnoteById\n      const id = String(node.identifier).toUpperCase()\n\n      // Mimick CM behavior of link definitions.\n      // See: .\n      if (!map.has(id)) {\n        // @ts-expect-error: node type matches map.\n        map.set(id, node)\n      }\n    }\n  })\n\n  return state\n\n  /**\n   * Transform an mdast node into a hast node.\n   *\n   * @param {MdastNodes} node\n   *   mdast node.\n   * @param {MdastParents | undefined} [parent]\n   *   Parent of `node`.\n   * @returns {Array | HastElementContent | undefined}\n   *   Resulting hast node.\n   */\n  function one(node, parent) {\n    const type = node.type\n    const handle = state.handlers[type]\n\n    if (own.call(state.handlers, type) && handle) {\n      return handle(state, node, parent)\n    }\n\n    if (state.options.passThrough && state.options.passThrough.includes(type)) {\n      if ('children' in node) {\n        const {children, ...shallow} = node\n        const result = structuredClone(shallow)\n        // @ts-expect-error: TS doesn\u2019t understand\u2026\n        result.children = state.all(node)\n        // @ts-expect-error: TS doesn\u2019t understand\u2026\n        return result\n      }\n\n      // @ts-expect-error: it\u2019s custom.\n      return structuredClone(node)\n    }\n\n    const unknown = state.options.unknownHandler || defaultUnknownHandler\n\n    return unknown(state, node, parent)\n  }\n\n  /**\n   * Transform the children of an mdast node into hast nodes.\n   *\n   * @param {MdastNodes} parent\n   *   mdast node to compile\n   * @returns {Array}\n   *   Resulting hast nodes.\n   */\n  function all(parent) {\n    /** @type {Array} */\n    const values = []\n\n    if ('children' in parent) {\n      const nodes = parent.children\n      let index = -1\n      while (++index < nodes.length) {\n        const result = state.one(nodes[index], parent)\n\n        // To do: see if we van clean this? Can we merge texts?\n        if (result) {\n          if (index && nodes[index - 1].type === 'break') {\n            if (!Array.isArray(result) && result.type === 'text') {\n              result.value = trimMarkdownSpaceStart(result.value)\n            }\n\n            if (!Array.isArray(result) && result.type === 'element') {\n              const head = result.children[0]\n\n              if (head && head.type === 'text') {\n                head.value = trimMarkdownSpaceStart(head.value)\n              }\n            }\n          }\n\n          if (Array.isArray(result)) {\n            values.push(...result)\n          } else {\n            values.push(result)\n          }\n        }\n      }\n    }\n\n    return values\n  }\n}\n\n/**\n * Copy a node\u2019s positional info.\n *\n * @param {MdastNodes} from\n *   mdast node to copy from.\n * @param {HastNodes} to\n *   hast node to copy into.\n * @returns {undefined}\n *   Nothing.\n */\nfunction patch(from, to) {\n  if (from.position) to.position = position(from)\n}\n\n/**\n * Honor the `data` of `from` and maybe generate an element instead of `to`.\n *\n * @template {HastNodes} Type\n *   Node type.\n * @param {MdastNodes} from\n *   mdast node to use data from.\n * @param {Type} to\n *   hast node to change.\n * @returns {HastElement | Type}\n *   Nothing.\n */\nfunction applyData(from, to) {\n  /** @type {HastElement | Type} */\n  let result = to\n\n  // Handle `data.hName`, `data.hProperties, `data.hChildren`.\n  if (from && from.data) {\n    const hName = from.data.hName\n    const hChildren = from.data.hChildren\n    const hProperties = from.data.hProperties\n\n    if (typeof hName === 'string') {\n      // Transforming the node resulted in an element with a different name\n      // than wanted:\n      if (result.type === 'element') {\n        result.tagName = hName\n      }\n      // Transforming the node resulted in a non-element, which happens for\n      // raw, text, and root nodes (unless custom handlers are passed).\n      // The intent of `hName` is to create an element, but likely also to keep\n      // the content around (otherwise: pass `hChildren`).\n      else {\n        /** @type {Array} */\n        // @ts-expect-error: assume no doctypes in `root`.\n        const children = 'children' in result ? result.children : [result]\n        result = {type: 'element', tagName: hName, properties: {}, children}\n      }\n    }\n\n    if (result.type === 'element' && hProperties) {\n      Object.assign(result.properties, structuredClone(hProperties))\n    }\n\n    if (\n      'children' in result &&\n      result.children &&\n      hChildren !== null &&\n      hChildren !== undefined\n    ) {\n      result.children = hChildren\n    }\n  }\n\n  return result\n}\n\n/**\n * Transform an unknown node.\n *\n * @param {State} state\n *   Info passed around.\n * @param {MdastNodes} node\n *   Unknown mdast node.\n * @returns {HastElement | HastText}\n *   Resulting hast node.\n */\nfunction defaultUnknownHandler(state, node) {\n  const data = node.data || {}\n  /** @type {HastElement | HastText} */\n  const result =\n    'value' in node &&\n    !(own.call(data, 'hProperties') || own.call(data, 'hChildren'))\n      ? {type: 'text', value: node.value}\n      : {\n          type: 'element',\n          tagName: 'div',\n          properties: {},\n          children: state.all(node)\n        }\n\n  state.patch(node, result)\n  return state.applyData(node, result)\n}\n\n/**\n * Wrap `nodes` with line endings between each node.\n *\n * @template {HastRootContent} Type\n *   Node type.\n * @param {Array} nodes\n *   List of nodes to wrap.\n * @param {boolean | undefined} [loose=false]\n *   Whether to add line endings at start and end (default: `false`).\n * @returns {Array}\n *   Wrapped nodes.\n */\nexport function wrap(nodes, loose) {\n  /** @type {Array} */\n  const result = []\n  let index = -1\n\n  if (loose) {\n    result.push({type: 'text', value: '\\n'})\n  }\n\n  while (++index < nodes.length) {\n    if (index) result.push({type: 'text', value: '\\n'})\n    result.push(nodes[index])\n  }\n\n  if (loose && nodes.length > 0) {\n    result.push({type: 'text', value: '\\n'})\n  }\n\n  return result\n}\n\n/**\n * Trim spaces and tabs at the start of `value`.\n *\n * @param {string} value\n *   Value to trim.\n * @returns {string}\n *   Result.\n */\nfunction trimMarkdownSpaceStart(value) {\n  let index = 0\n  let code = value.charCodeAt(index)\n\n  while (code === 9 || code === 32) {\n    index++\n    code = value.charCodeAt(index)\n  }\n\n  return value.slice(index)\n}\n", "/**\n * @import {Nodes as HastNodes} from 'hast'\n * @import {Nodes as MdastNodes} from 'mdast'\n * @import {Options} from './state.js'\n */\n\nimport {ok as assert} from 'devlop'\nimport {footer} from './footer.js'\nimport {createState} from './state.js'\n\n/**\n * Transform mdast to hast.\n *\n * ##### Notes\n *\n * ###### HTML\n *\n * Raw HTML is available in mdast as `html` nodes and can be embedded in hast\n * as semistandard `raw` nodes.\n * Most utilities ignore `raw` nodes but two notable ones don\u2019t:\n *\n * *   `hast-util-to-html` also has an option `allowDangerousHtml` which will\n *     output the raw HTML.\n *     This is typically discouraged as noted by the option name but is useful\n *     if you completely trust authors\n * *   `hast-util-raw` can handle the raw embedded HTML strings by parsing them\n *     into standard hast nodes (`element`, `text`, etc).\n *     This is a heavy task as it needs a full HTML parser, but it is the only\n *     way to support untrusted content\n *\n * ###### Footnotes\n *\n * Many options supported here relate to footnotes.\n * Footnotes are not specified by CommonMark, which we follow by default.\n * They are supported by GitHub, so footnotes can be enabled in markdown with\n * `mdast-util-gfm`.\n *\n * The options `footnoteBackLabel` and `footnoteLabel` define natural language\n * that explains footnotes, which is hidden for sighted users but shown to\n * assistive technology.\n * When your page is not in English, you must define translated values.\n *\n * Back references use ARIA attributes, but the section label itself uses a\n * heading that is hidden with an `sr-only` class.\n * To show it to sighted users, define different attributes in\n * `footnoteLabelProperties`.\n *\n * ###### Clobbering\n *\n * Footnotes introduces a problem, as it links footnote calls to footnote\n * definitions on the page through `id` attributes generated from user content,\n * which results in DOM clobbering.\n *\n * DOM clobbering is this:\n *\n * ```html\n * 
\n * \n * ```\n *\n * Elements by their ID are made available by browsers on the `window` object,\n * which is a security risk.\n * Using a prefix solves this problem.\n *\n * More information on how to handle clobbering and the prefix is explained in\n * Example: headings (DOM clobbering) in `rehype-sanitize`.\n *\n * ###### Unknown nodes\n *\n * Unknown nodes are nodes with a type that isn\u2019t in `handlers` or `passThrough`.\n * The default behavior for unknown nodes is:\n *\n * *   when the node has a `value` (and doesn\u2019t have `data.hName`,\n *     `data.hProperties`, or `data.hChildren`, see later), create a hast `text`\n *     node\n * *   otherwise, create a `
` element (which could be changed with\n *     `data.hName`), with its children mapped from mdast to hast as well\n *\n * This behavior can be changed by passing an `unknownHandler`.\n *\n * @param {MdastNodes} tree\n *   mdast tree.\n * @param {Options | null | undefined} [options]\n *   Configuration (optional).\n * @returns {HastNodes}\n *   hast tree.\n */\nexport function toHast(tree, options) {\n  const state = createState(tree, options)\n  const node = state.one(tree, undefined)\n  const foot = footer(state)\n  /** @type {HastNodes} */\n  const result = Array.isArray(node)\n    ? {type: 'root', children: node}\n    : node || {type: 'root', children: []}\n\n  if (foot) {\n    // If there\u2019s a footer, there were definitions, meaning block\n    // content.\n    // So `result` is a parent node.\n    assert('children' in result)\n    result.children.push({type: 'text', value: '\\n'}, foot)\n  }\n\n  return result\n}\n", "/**\n * @import {Root as HastRoot} from 'hast'\n * @import {Root as MdastRoot} from 'mdast'\n * @import {Options as ToHastOptions} from 'mdast-util-to-hast'\n * @import {Processor} from 'unified'\n * @import {VFile} from 'vfile'\n */\n\n/**\n * @typedef {Omit} Options\n *\n * @callback TransformBridge\n *   Bridge-mode.\n *\n *   Runs the destination with the new hast tree.\n *   Discards result.\n * @param {MdastRoot} tree\n *   Tree.\n * @param {VFile} file\n *   File.\n * @returns {Promise}\n *   Nothing.\n *\n * @callback TransformMutate\n *  Mutate-mode.\n *\n *  Further transformers run on the hast tree.\n * @param {MdastRoot} tree\n *   Tree.\n * @param {VFile} file\n *   File.\n * @returns {HastRoot}\n *   Tree (hast).\n */\n\nimport {toHast} from 'mdast-util-to-hast'\n\n/**\n * Turn markdown into HTML.\n *\n * ##### Notes\n *\n * ###### Signature\n *\n * * if a processor is given,\n *   runs the (rehype) plugins used on it with a hast tree,\n *   then discards the result (*bridge mode*)\n * * otherwise,\n *   returns a hast tree,\n *   the plugins used after `remarkRehype` are rehype plugins (*mutate mode*)\n *\n * > \uD83D\uDC49 **Note**:\n * > It\u2019s highly unlikely that you want to pass a `processor`.\n *\n * ###### HTML\n *\n * Raw HTML is available in mdast as `html` nodes and can be embedded in hast\n * as semistandard `raw` nodes.\n * Most plugins ignore `raw` nodes but two notable ones don\u2019t:\n *\n * * `rehype-stringify` also has an option `allowDangerousHtml` which will\n *   output the raw HTML.\n *   This is typically discouraged as noted by the option name but is useful if\n *   you completely trust authors\n * * `rehype-raw` can handle the raw embedded HTML strings by parsing them\n *   into standard hast nodes (`element`, `text`, etc);\n *   this is a heavy task as it needs a full HTML parser,\n *   but it is the only way to support untrusted content\n *\n * ###### Footnotes\n *\n * Many options supported here relate to footnotes.\n * Footnotes are not specified by CommonMark,\n * which we follow by default.\n * They are supported by GitHub,\n * so footnotes can be enabled in markdown with `remark-gfm`.\n *\n * The options `footnoteBackLabel` and `footnoteLabel` define natural language\n * that explains footnotes,\n * which is hidden for sighted users but shown to assistive technology.\n * When your page is not in English,\n * you must define translated values.\n *\n * Back references use ARIA attributes,\n * but the section label itself uses a heading that is hidden with an\n * `sr-only` class.\n * To show it to sighted users,\n * define different attributes in `footnoteLabelProperties`.\n *\n * ###### Clobbering\n *\n * Footnotes introduces a problem,\n * as it links footnote calls to footnote definitions on the page through `id`\n * attributes generated from user content,\n * which results in DOM clobbering.\n *\n * DOM clobbering is this:\n *\n * ```html\n * 
\n * \n * ```\n *\n * Elements by their ID are made available by browsers on the `window` object,\n * which is a security risk.\n * Using a prefix solves this problem.\n *\n * More information on how to handle clobbering and the prefix is explained in\n * *Example: headings (DOM clobbering)* in `rehype-sanitize`.\n *\n * ###### Unknown nodes\n *\n * Unknown nodes are nodes with a type that isn\u2019t in `handlers` or `passThrough`.\n * The default behavior for unknown nodes is:\n *\n * * when the node has a `value`\n *   (and doesn\u2019t have `data.hName`, `data.hProperties`, or `data.hChildren`,\n *   see later),\n *   create a hast `text` node\n * * otherwise,\n *   create a `
` element (which could be changed with `data.hName`),\n *   with its children mapped from mdast to hast as well\n *\n * This behavior can be changed by passing an `unknownHandler`.\n *\n * @overload\n * @param {Processor} processor\n * @param {Readonly | null | undefined} [options]\n * @returns {TransformBridge}\n *\n * @overload\n * @param {Readonly | null | undefined} [options]\n * @returns {TransformMutate}\n *\n * @overload\n * @param {Readonly | Processor | null | undefined} [destination]\n * @param {Readonly | null | undefined} [options]\n * @returns {TransformBridge | TransformMutate}\n *\n * @param {Readonly | Processor | null | undefined} [destination]\n *   Processor or configuration (optional).\n * @param {Readonly | null | undefined} [options]\n *   When a processor was given,\n *   configuration (optional).\n * @returns {TransformBridge | TransformMutate}\n *   Transform.\n */\nexport default function remarkRehype(destination, options) {\n  if (destination && 'run' in destination) {\n    /**\n     * @type {TransformBridge}\n     */\n    return async function (tree, file) {\n      // Cast because root in -> root out.\n      const hastTree = /** @type {HastRoot} */ (\n        toHast(tree, {file, ...options})\n      )\n      await destination.run(hastTree, file)\n    }\n  }\n\n  /**\n   * @type {TransformMutate}\n   */\n  return function (tree, file) {\n    // Cast because root in -> root out.\n    // To do: in the future, disallow ` || options` fallback.\n    // With `unified-engine`, `destination` can be `undefined` but\n    // `options` will be the file set.\n    // We should not pass that as `options`.\n    return /** @type {HastRoot} */ (\n      toHast(tree, {file, ...(destination || options)})\n    )\n  }\n}\n", "/**\n * @import {Comment, Doctype, Element, Nodes, RootContent, Root, Text} from 'hast'\n * @import {DefaultTreeAdapterMap, Token} from 'parse5'\n * @import {Schema} from 'property-information'\n */\n\n/**\n * @typedef {DefaultTreeAdapterMap['document']} Parse5Document\n * @typedef {DefaultTreeAdapterMap['documentFragment']} Parse5Fragment\n * @typedef {DefaultTreeAdapterMap['element']} Parse5Element\n * @typedef {DefaultTreeAdapterMap['node']} Parse5Nodes\n * @typedef {DefaultTreeAdapterMap['documentType']} Parse5Doctype\n * @typedef {DefaultTreeAdapterMap['commentNode']} Parse5Comment\n * @typedef {DefaultTreeAdapterMap['textNode']} Parse5Text\n * @typedef {DefaultTreeAdapterMap['parentNode']} Parse5Parent\n * @typedef {Token.Attribute} Parse5Attribute\n *\n * @typedef Options\n *   Configuration.\n * @property {Space | null | undefined} [space='html']\n *   Which space the document is in (default: `'html'`).\n *\n *   When an `` element is found in the HTML space, this package already\n *   automatically switches to and from the SVG space when entering and exiting\n *   it.\n *\n * @typedef {Exclude} Parse5Content\n *\n * @typedef {'html' | 'svg'} Space\n */\n\nimport {stringify as commas} from 'comma-separated-tokens'\nimport {ok as assert} from 'devlop'\nimport {find, html, svg} from 'property-information'\nimport {stringify as spaces} from 'space-separated-tokens'\nimport {webNamespaces} from 'web-namespaces'\nimport {zwitch} from 'zwitch'\n\n/** @type {Options} */\nconst emptyOptions = {}\n\nconst own = {}.hasOwnProperty\n\nconst one = zwitch('type', {handlers: {root, element, text, comment, doctype}})\n\n/**\n * Transform a hast tree to a `parse5` AST.\n *\n * @param {Nodes} tree\n *   Tree to transform.\n * @param {Options | null | undefined} [options]\n *   Configuration (optional).\n * @returns {Parse5Nodes}\n *   `parse5` node.\n */\nexport function toParse5(tree, options) {\n  const settings = options || emptyOptions\n  const space = settings.space\n  return one(tree, space === 'svg' ? svg : html)\n}\n\n/**\n * @param {Root} node\n *   Node (hast) to transform.\n * @param {Schema} schema\n *   Current schema.\n * @returns {Parse5Document}\n *   Parse5 node.\n */\nfunction root(node, schema) {\n  /** @type {Parse5Document} */\n  const result = {\n    nodeName: '#document',\n    // @ts-expect-error: `parse5` uses enums, which are actually strings.\n    mode: (node.data || {}).quirksMode ? 'quirks' : 'no-quirks',\n    childNodes: []\n  }\n  result.childNodes = all(node.children, result, schema)\n  patch(node, result)\n  return result\n}\n\n/**\n * @param {Root} node\n *   Node (hast) to transform.\n * @param {Schema} schema\n *   Current schema.\n * @returns {Parse5Fragment}\n *   Parse5 node.\n */\nfunction fragment(node, schema) {\n  /** @type {Parse5Fragment} */\n  const result = {nodeName: '#document-fragment', childNodes: []}\n  result.childNodes = all(node.children, result, schema)\n  patch(node, result)\n  return result\n}\n\n/**\n * @param {Doctype} node\n *   Node (hast) to transform.\n * @returns {Parse5Doctype}\n *   Parse5 node.\n */\nfunction doctype(node) {\n  /** @type {Parse5Doctype} */\n  const result = {\n    nodeName: '#documentType',\n    name: 'html',\n    publicId: '',\n    systemId: '',\n    parentNode: null\n  }\n\n  patch(node, result)\n  return result\n}\n\n/**\n * @param {Text} node\n *   Node (hast) to transform.\n * @returns {Parse5Text}\n *   Parse5 node.\n */\nfunction text(node) {\n  /** @type {Parse5Text} */\n  const result = {\n    nodeName: '#text',\n    value: node.value,\n    parentNode: null\n  }\n  patch(node, result)\n  return result\n}\n\n/**\n * @param {Comment} node\n *   Node (hast) to transform.\n * @returns {Parse5Comment}\n *   Parse5 node.\n */\nfunction comment(node) {\n  /** @type {Parse5Comment} */\n  const result = {\n    nodeName: '#comment',\n    data: node.value,\n    parentNode: null\n  }\n\n  patch(node, result)\n\n  return result\n}\n\n/**\n * @param {Element} node\n *   Node (hast) to transform.\n * @param {Schema} schema\n *   Current schema.\n * @returns {Parse5Element}\n *   Parse5 node.\n */\nfunction element(node, schema) {\n  const parentSchema = schema\n  let currentSchema = parentSchema\n\n  if (\n    node.type === 'element' &&\n    node.tagName.toLowerCase() === 'svg' &&\n    parentSchema.space === 'html'\n  ) {\n    currentSchema = svg\n  }\n\n  /** @type {Array} */\n  const attrs = []\n  /** @type {string} */\n  let prop\n\n  if (node.properties) {\n    for (prop in node.properties) {\n      if (prop !== 'children' && own.call(node.properties, prop)) {\n        const result = createProperty(\n          currentSchema,\n          prop,\n          node.properties[prop]\n        )\n\n        if (result) {\n          attrs.push(result)\n        }\n      }\n    }\n  }\n\n  const space = currentSchema.space\n  // `html` and `svg` both have a space.\n  assert(space)\n\n  /** @type {Parse5Element} */\n  const result = {\n    nodeName: node.tagName,\n    tagName: node.tagName,\n    attrs,\n    // @ts-expect-error: `parse5` types are wrong.\n    namespaceURI: webNamespaces[space],\n    childNodes: [],\n    parentNode: null\n  }\n  result.childNodes = all(node.children, result, currentSchema)\n  patch(node, result)\n\n  if (node.tagName === 'template' && node.content) {\n    // @ts-expect-error: `parse5` types are wrong.\n    result.content = fragment(node.content, currentSchema)\n  }\n\n  return result\n}\n\n/**\n * Handle a property.\n *\n * @param {Schema} schema\n *   Current schema.\n * @param {string} prop\n *   Key.\n * @param {Array | boolean | number | string | null | undefined} value\n *   hast property value.\n * @returns {Parse5Attribute | undefined}\n *   Field for runtime, optional.\n */\nfunction createProperty(schema, prop, value) {\n  const info = find(schema, prop)\n\n  // Ignore nullish and `NaN` values.\n  if (\n    value === false ||\n    value === null ||\n    value === undefined ||\n    (typeof value === 'number' && Number.isNaN(value)) ||\n    (!value && info.boolean)\n  ) {\n    return\n  }\n\n  if (Array.isArray(value)) {\n    // Accept `array`.\n    // Most props are space-separated.\n    value = info.commaSeparated ? commas(value) : spaces(value)\n  }\n\n  /** @type {Parse5Attribute} */\n  const attribute = {\n    name: info.attribute,\n    value: value === true ? '' : String(value)\n  }\n\n  if (info.space && info.space !== 'html' && info.space !== 'svg') {\n    const index = attribute.name.indexOf(':')\n\n    if (index < 0) {\n      attribute.prefix = ''\n    } else {\n      attribute.name = attribute.name.slice(index + 1)\n      attribute.prefix = info.attribute.slice(0, index)\n    }\n\n    attribute.namespace = webNamespaces[info.space]\n  }\n\n  return attribute\n}\n\n/**\n * Transform all hast nodes.\n *\n * @param {Array} children\n *   List of children.\n * @param {Parse5Parent} parentNode\n *   `parse5` parent node.\n * @param {Schema} schema\n *   Current schema.\n * @returns {Array}\n *   Transformed children.\n */\nfunction all(children, parentNode, schema) {\n  let index = -1\n  /** @type {Array} */\n  const results = []\n\n  if (children) {\n    while (++index < children.length) {\n      /** @type {Parse5Content} */\n      const child = one(children[index], schema)\n\n      child.parentNode = parentNode\n\n      results.push(child)\n    }\n  }\n\n  return results\n}\n\n/**\n * Add position info from `from` to `to`.\n *\n * @param {Nodes} from\n *   hast node.\n * @param {Parse5Nodes} to\n *   `parse5` node.\n * @returns {undefined}\n *   Nothing.\n */\nfunction patch(from, to) {\n  const position = from.position\n\n  if (position && position.start && position.end) {\n    assert(typeof position.start.offset === 'number')\n    assert(typeof position.end.offset === 'number')\n\n    to.sourceCodeLocation = {\n      startLine: position.start.line,\n      startCol: position.start.column,\n      startOffset: position.start.offset,\n      endLine: position.end.line,\n      endCol: position.end.column,\n      endOffset: position.end.offset\n    }\n  }\n}\n", "/**\n * @import {Options} from 'hast-util-raw'\n * @import {Comment, Doctype, Element, Nodes, RootContent, Root, Text} from 'hast'\n * @import {Raw} from 'mdast-util-to-hast'\n * @import {DefaultTreeAdapterMap, ParserOptions} from 'parse5'\n * @import {Point} from 'unist'\n */\n\n/**\n * @typedef State\n *   Info passed around about the current state.\n * @property {(node: Nodes) => undefined} handle\n *   Add a hast node to the parser.\n * @property {Options} options\n *   User configuration.\n * @property {Parser} parser\n *   Current parser.\n * @property {boolean} stitches\n *   Whether there are stitches.\n */\n\n/**\n * @typedef Stitch\n *   Custom comment-like value we pass through parse5, which contains a\n *   replacement node that we\u2019ll swap back in afterwards.\n * @property {'comment'} type\n *   Node type.\n * @property {{stitch: Nodes}} value\n *   Replacement value.\n */\n\nimport structuredClone from '@ungap/structured-clone'\nimport {fromParse5} from 'hast-util-from-parse5'\nimport {toParse5} from 'hast-util-to-parse5'\nimport {htmlVoidElements} from 'html-void-elements'\nimport {Parser, Token, TokenizerMode, html} from 'parse5'\nimport {pointEnd, pointStart} from 'unist-util-position'\nimport {visit} from 'unist-util-visit'\nimport {webNamespaces} from 'web-namespaces'\nimport {zwitch} from 'zwitch'\n\nconst gfmTagfilterExpression =\n  /<(\\/?)(iframe|noembed|noframes|plaintext|script|style|textarea|title|xmp)(?=[\\t\\n\\f\\r />])/gi\n\n// Node types associated with MDX.\n// \nconst knownMdxNames = new Set([\n  'mdxFlowExpression',\n  'mdxJsxFlowElement',\n  'mdxJsxTextElement',\n  'mdxTextExpression',\n  'mdxjsEsm'\n])\n\n/** @type {ParserOptions} */\nconst parseOptions = {sourceCodeLocationInfo: true, scriptingEnabled: false}\n\n/**\n * Pass a hast tree through an HTML parser, which will fix nesting, and turn\n * raw nodes into actual nodes.\n *\n * @param {Nodes} tree\n *   Original hast tree to transform.\n * @param {Options | null | undefined} [options]\n *   Configuration (optional).\n * @returns {Nodes}\n *   Parsed again tree.\n */\nexport function raw(tree, options) {\n  const document = documentMode(tree)\n  /** @type {(node: Nodes, state: State) => undefined} */\n  const one = zwitch('type', {\n    handlers: {root, element, text, comment, doctype, raw: handleRaw},\n    unknown\n  })\n\n  /** @type {State} */\n  const state = {\n    parser: document\n      ? new Parser(parseOptions)\n      : Parser.getFragmentParser(undefined, parseOptions),\n    handle(node) {\n      one(node, state)\n    },\n    stitches: false,\n    options: options || {}\n  }\n\n  one(tree, state)\n  resetTokenizer(state, pointStart())\n\n  const p5 = document ? state.parser.document : state.parser.getFragment()\n  const result = fromParse5(p5, {\n    // To do: support `space`?\n    file: state.options.file\n  })\n\n  if (state.stitches) {\n    visit(result, 'comment', function (node, index, parent) {\n      const stitch = /** @type {Stitch} */ (/** @type {unknown} */ (node))\n      if (stitch.value.stitch && parent && index !== undefined) {\n        /** @type {Array} */\n        const siblings = parent.children\n        // @ts-expect-error: assume the stitch is allowed.\n        siblings[index] = stitch.value.stitch\n        return index\n      }\n    })\n  }\n\n  // Unpack if possible and when not given a `root`.\n  if (\n    result.type === 'root' &&\n    result.children.length === 1 &&\n    result.children[0].type === tree.type\n  ) {\n    return result.children[0]\n  }\n\n  return result\n}\n\n/**\n * Transform all nodes\n *\n * @param {Array} nodes\n *   hast content.\n * @param {State} state\n *   Info passed around about the current state.\n * @returns {undefined}\n *   Nothing.\n */\nfunction all(nodes, state) {\n  let index = -1\n\n  /* istanbul ignore else - invalid nodes, see rehypejs/rehype-raw#7. */\n  if (nodes) {\n    while (++index < nodes.length) {\n      state.handle(nodes[index])\n    }\n  }\n}\n\n/**\n * Transform a root.\n *\n * @param {Root} node\n *   hast root node.\n * @param {State} state\n *   Info passed around about the current state.\n * @returns {undefined}\n *   Nothing.\n */\nfunction root(node, state) {\n  all(node.children, state)\n}\n\n/**\n * Transform an element.\n *\n * @param {Element} node\n *   hast element node.\n * @param {State} state\n *   Info passed around about the current state.\n * @returns {undefined}\n *   Nothing.\n */\nfunction element(node, state) {\n  startTag(node, state)\n\n  all(node.children, state)\n\n  endTag(node, state)\n}\n\n/**\n * Transform a text.\n *\n * @param {Text} node\n *   hast text node.\n * @param {State} state\n *   Info passed around about the current state.\n * @returns {undefined}\n *   Nothing.\n */\nfunction text(node, state) {\n  // Allow `DATA` through `PLAINTEXT`,\n  // but when hanging in a tag for example,\n  // switch back to `DATA`.\n  // Note: `State` is not exposed by `parse5`, so these numbers are fragile.\n  // See: \n  if (state.parser.tokenizer.state > 4) {\n    state.parser.tokenizer.state = 0\n  }\n\n  /** @type {Token.CharacterToken} */\n  const token = {\n    type: Token.TokenType.CHARACTER,\n    chars: node.value,\n    location: createParse5Location(node)\n  }\n\n  resetTokenizer(state, pointStart(node))\n  // @ts-expect-error: private.\n  state.parser.currentToken = token\n  // @ts-expect-error: private.\n  state.parser._processToken(state.parser.currentToken)\n}\n\n/**\n * Transform a doctype.\n *\n * @param {Doctype} node\n *   hast doctype node.\n * @param {State} state\n *   Info passed around about the current state.\n * @returns {undefined}\n *   Nothing.\n */\nfunction doctype(node, state) {\n  /** @type {Token.DoctypeToken} */\n  const token = {\n    type: Token.TokenType.DOCTYPE,\n    name: 'html',\n    forceQuirks: false,\n    publicId: '',\n    systemId: '',\n    location: createParse5Location(node)\n  }\n\n  resetTokenizer(state, pointStart(node))\n  // @ts-expect-error: private.\n  state.parser.currentToken = token\n  // @ts-expect-error: private.\n  state.parser._processToken(state.parser.currentToken)\n}\n\n/**\n * Transform a stitch.\n *\n * @param {Nodes} node\n *   unknown node.\n * @param {State} state\n *   Info passed around about the current state.\n * @returns {undefined}\n *   Nothing.\n */\nfunction stitch(node, state) {\n  // Mark that there are stitches, so we need to walk the tree and revert them.\n  state.stitches = true\n\n  /** @type {Nodes} */\n  const clone = cloneWithoutChildren(node)\n\n  // Recurse, because to somewhat handle `[]` (where `[]` denotes the\n  // passed through node).\n  if ('children' in node && 'children' in clone) {\n    // Root in root out.\n    const fakeRoot = /** @type {Root} */ (\n      raw({type: 'root', children: node.children}, state.options)\n    )\n    clone.children = fakeRoot.children\n  }\n\n  // Hack: `value` is supposed to be a string, but as none of the tools\n  // (`parse5` or `hast-util-from-parse5`) looks at it, we can pass nodes\n  // through.\n  comment({type: 'comment', value: {stitch: clone}}, state)\n}\n\n/**\n * Transform a comment (or stitch).\n *\n * @param {Comment | Stitch} node\n *   hast comment node.\n * @param {State} state\n *   Info passed around about the current state.\n * @returns {undefined}\n *   Nothing.\n */\nfunction comment(node, state) {\n  /** @type {string} */\n  // @ts-expect-error: we pass stitches through.\n  const data = node.value\n\n  /** @type {Token.CommentToken} */\n  const token = {\n    type: Token.TokenType.COMMENT,\n    data,\n    location: createParse5Location(node)\n  }\n  resetTokenizer(state, pointStart(node))\n  // @ts-expect-error: private.\n  state.parser.currentToken = token\n  // @ts-expect-error: private.\n  state.parser._processToken(state.parser.currentToken)\n}\n\n/**\n * Transform a raw node.\n *\n * @param {Raw} node\n *   hast raw node.\n * @param {State} state\n *   Info passed around about the current state.\n * @returns {undefined}\n *   Nothing.\n */\nfunction handleRaw(node, state) {\n  // Reset preprocessor:\n  // See: .\n  state.parser.tokenizer.preprocessor.html = ''\n  state.parser.tokenizer.preprocessor.pos = -1\n  // @ts-expect-error: private.\n  // type-coverage:ignore-next-line\n  state.parser.tokenizer.preprocessor.lastGapPos = -2\n  // @ts-expect-error: private.\n  // type-coverage:ignore-next-line\n  state.parser.tokenizer.preprocessor.gapStack = []\n  // @ts-expect-error: private.\n  // type-coverage:ignore-next-line\n  state.parser.tokenizer.preprocessor.skipNextNewLine = false\n  state.parser.tokenizer.preprocessor.lastChunkWritten = false\n  state.parser.tokenizer.preprocessor.endOfChunkHit = false\n  // @ts-expect-error: private.\n  // type-coverage:ignore-next-line\n  state.parser.tokenizer.preprocessor.isEol = false\n\n  // Now pass `node.value`.\n  setPoint(state, pointStart(node))\n\n  state.parser.tokenizer.write(\n    state.options.tagfilter\n      ? node.value.replace(gfmTagfilterExpression, '<$1$2')\n      : node.value,\n    false\n  )\n  // @ts-expect-error: private.\n  state.parser.tokenizer._runParsingLoop()\n\n  // Character references hang, so if we ended there, we need to flush\n  // those too.\n  // We reset the preprocessor as if the document ends here.\n  // Then one single call to the relevant state does the trick, parse5\n  // consumes the whole token.\n\n  // Note: `State` is not exposed by `parse5`, so these numbers are fragile.\n  // See: \n  // Note: a change to `parse5`, which breaks this, was merged but not released.\n  // Investigate when it is.\n  // To do: remove next major.\n  /* c8 ignore next 12 -- removed in  */\n  if (\n    state.parser.tokenizer.state === 72 /* NAMED_CHARACTER_REFERENCE */ ||\n    // @ts-expect-error: removed.\n    state.parser.tokenizer.state === 78 /* NUMERIC_CHARACTER_REFERENCE_END */\n  ) {\n    state.parser.tokenizer.preprocessor.lastChunkWritten = true\n    /** @type {number} */\n    // @ts-expect-error: private.\n    const cp = state.parser.tokenizer._consume()\n    // @ts-expect-error: private.\n    state.parser.tokenizer._callState(cp)\n  }\n}\n\n/**\n * Crash on an unknown node.\n *\n * @param {unknown} node_\n *   unknown node.\n * @param {State} state\n *   Info passed around about the current state.\n * @returns {undefined}\n *   Never.\n */\nfunction unknown(node_, state) {\n  const node = /** @type {Nodes} */ (node_)\n\n  if (\n    state.options.passThrough &&\n    state.options.passThrough.includes(node.type)\n  ) {\n    stitch(node, state)\n  } else {\n    let extra = ''\n\n    if (knownMdxNames.has(node.type)) {\n      extra =\n        \". It looks like you are using MDX nodes with `hast-util-raw` (or `rehype-raw`). If you use this because you are using remark or rehype plugins that inject `'html'` nodes, then please raise an issue with that plugin, as its a bad and slow idea. If you use this because you are using markdown syntax, then you have to configure this utility (or plugin) to pass through these nodes (see `passThrough` in docs), but you can also migrate to use the MDX syntax\"\n    }\n\n    throw new Error('Cannot compile `' + node.type + '` node' + extra)\n  }\n}\n\n/**\n * Reset the tokenizer of a parser.\n *\n * @param {State} state\n *   Info passed around about the current state.\n * @param {Point | undefined} point\n *   Point.\n * @returns {undefined}\n *   Nothing.\n */\nfunction resetTokenizer(state, point) {\n  setPoint(state, point)\n\n  // Process final characters if they\u2019re still there after hibernating.\n  /** @type {Token.CharacterToken} */\n  // @ts-expect-error: private.\n  const token = state.parser.tokenizer.currentCharacterToken\n\n  if (token && token.location) {\n    token.location.endLine = state.parser.tokenizer.preprocessor.line\n    token.location.endCol = state.parser.tokenizer.preprocessor.col + 1\n    token.location.endOffset = state.parser.tokenizer.preprocessor.offset + 1\n    // @ts-expect-error: private.\n    state.parser.currentToken = token\n    // @ts-expect-error: private.\n    state.parser._processToken(state.parser.currentToken)\n  }\n\n  // Reset tokenizer:\n  // See: .\n  // Especially putting it back in the `data` state is useful: some elements,\n  // like textareas and iframes, change the state.\n  // See GH-7.\n  // But also if broken HTML is in `raw`, and then a correct element is given.\n  // See GH-11.\n  // @ts-expect-error: private.\n  state.parser.tokenizer.paused = false\n  // @ts-expect-error: private.\n  state.parser.tokenizer.inLoop = false\n\n  // Note: don\u2019t reset `state`, `inForeignNode`, or `lastStartTagName`, we\n  // manually update those when needed.\n  state.parser.tokenizer.active = false\n  // @ts-expect-error: private.\n  state.parser.tokenizer.returnState = TokenizerMode.DATA\n  // @ts-expect-error: private.\n  state.parser.tokenizer.charRefCode = -1\n  // @ts-expect-error: private.\n  state.parser.tokenizer.consumedAfterSnapshot = -1\n  // @ts-expect-error: private.\n  state.parser.tokenizer.currentLocation = null\n  // @ts-expect-error: private.\n  state.parser.tokenizer.currentCharacterToken = null\n  // @ts-expect-error: private.\n  state.parser.tokenizer.currentToken = null\n  // @ts-expect-error: private.\n  state.parser.tokenizer.currentAttr = {name: '', value: ''}\n}\n\n/**\n * Set current location.\n *\n * @param {State} state\n *   Info passed around about the current state.\n * @param {Point | undefined} point\n *   Point.\n * @returns {undefined}\n *   Nothing.\n */\nfunction setPoint(state, point) {\n  if (point && point.offset !== undefined) {\n    /** @type {Token.Location} */\n    const location = {\n      startLine: point.line,\n      startCol: point.column,\n      startOffset: point.offset,\n      endLine: -1,\n      endCol: -1,\n      endOffset: -1\n    }\n\n    // @ts-expect-error: private.\n    // type-coverage:ignore-next-line\n    state.parser.tokenizer.preprocessor.lineStartPos = -point.column + 1 // Looks weird, but ensures we get correct positional info.\n    state.parser.tokenizer.preprocessor.droppedBufferSize = point.offset\n    state.parser.tokenizer.preprocessor.line = point.line\n    // @ts-expect-error: private.\n    state.parser.tokenizer.currentLocation = location\n  }\n}\n\n/**\n * Emit a start tag.\n *\n * @param {Element} node\n *   Element.\n * @param {State} state\n *   Info passed around about the current state.\n * @returns {undefined}\n *   Nothing.\n */\nfunction startTag(node, state) {\n  const tagName = node.tagName.toLowerCase()\n\n  // Ignore tags if we\u2019re in plain text.\n  if (state.parser.tokenizer.state === TokenizerMode.PLAINTEXT) return\n\n  resetTokenizer(state, pointStart(node))\n\n  const current = state.parser.openElements.current\n  let ns = 'namespaceURI' in current ? current.namespaceURI : webNamespaces.html\n\n  if (ns === webNamespaces.html && tagName === 'svg') {\n    ns = webNamespaces.svg\n  }\n\n  const result = toParse5(\n    // Shallow clone to not delve into `children`: we only need the attributes.\n    {...node, children: []},\n    {space: ns === webNamespaces.svg ? 'svg' : 'html'}\n  )\n\n  /** @type {Token.TagToken} */\n  const tag = {\n    type: Token.TokenType.START_TAG,\n    tagName,\n    tagID: html.getTagID(tagName),\n    // We always send start and end tags.\n    selfClosing: false,\n    ackSelfClosing: false,\n    // Always element.\n    /* c8 ignore next */\n    attrs: 'attrs' in result ? result.attrs : [],\n    location: createParse5Location(node)\n  }\n\n  // The HTML parsing algorithm works by doing half of the state management in\n  // the tokenizer and half in the parser.\n  // We can\u2019t use the tokenizer here, as we don\u2019t have strings.\n  // So we act *as if* the tokenizer emits tokens:\n\n  // @ts-expect-error: private.\n  state.parser.currentToken = tag\n  // @ts-expect-error: private.\n  state.parser._processToken(state.parser.currentToken)\n\n  // \u2026but then we still need a bunch of work that the tokenizer would normally\n  // do, such as:\n\n  // Set a tag name, similar to how the tokenizer would do it.\n  state.parser.tokenizer.lastStartTagName = tagName\n\n  // `inForeignNode` is correctly set by the parser.\n}\n\n/**\n * Emit an end tag.\n *\n * @param {Element} node\n *   Element.\n * @param {State} state\n *   Info passed around about the current state.\n * @returns {undefined}\n *   Nothing.\n */\nfunction endTag(node, state) {\n  const tagName = node.tagName.toLowerCase()\n  // Do not emit closing tags for HTML void elements.\n  if (\n    !state.parser.tokenizer.inForeignNode &&\n    htmlVoidElements.includes(tagName)\n  ) {\n    return\n  }\n\n  // Ignore tags if we\u2019re in plain text.\n  if (state.parser.tokenizer.state === TokenizerMode.PLAINTEXT) return\n\n  resetTokenizer(state, pointEnd(node))\n\n  /** @type {Token.TagToken} */\n  const tag = {\n    type: Token.TokenType.END_TAG,\n    tagName,\n    tagID: html.getTagID(tagName),\n    selfClosing: false,\n    ackSelfClosing: false,\n    attrs: [],\n    location: createParse5Location(node)\n  }\n\n  // The HTML parsing algorithm works by doing half of the state management in\n  // the tokenizer and half in the parser.\n  // We can\u2019t use the tokenizer here, as we don\u2019t have strings.\n  // So we act *as if* the tokenizer emits tokens:\n\n  // @ts-expect-error: private.\n  state.parser.currentToken = tag\n  // @ts-expect-error: private.\n  state.parser._processToken(state.parser.currentToken)\n\n  // \u2026but then we still need a bunch of work that the tokenizer would normally\n  // do, such as:\n\n  // Switch back to the data state after alternative states that don\u2019t accept\n  // tags:\n  if (\n    // Current element is closed.\n    tagName === state.parser.tokenizer.lastStartTagName &&\n    // `