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[finding] os lint --json --eval --generator UNRESOLVABLE_PATH leaks esbuild's diagnostic to stderr — the sibling pin one file over asserts the opposite property holds #16358
Description
The defect
os lint --json --eval --generator UNRESOLVABLE_PATH writes 54 bytes to stderr — esbuild's own diagnostic, [ERROR] Could not resolve ... — while the run's --json face is otherwise well-formed on stdout.
A --json invocation is a machine face. Anything on stderr is a human-channel emission the caller did not ask for, and here it is an internal bundler's diagnostic, not an ObjectStack refusal.
⭐ Why this is a contradiction and not just a leak
One file over, packages/cli/test/lint-eval-generator-load-envelope.e2e.test.ts pins the opposite property:
expect(run.stderr).toBe('')
with the comment "A --json run leaks nothing to the human channel".
That pin is green, and it is honest about what it measures: it drives a module that exists and throws at import. The unresolvable-path branch is a different door into the same failure, it is uncovered, and it leaks.
⇒ Same command, same face, two answers — with a pin asserting the one that holds. The pin's comment states a property of the --json face as a whole; the code only delivers it on one of the two branches that reach the same catch.
Where it comes from
The leak is esbuild's logger writing directly, inside the bundleRequire call that loads the generator. The [ERROR] Could not resolve text is emitted during bundling, before any ObjectStack code sees a throw — so the surrounding try/catch, which does produce a correct one-key {error} JSON document on stdout, never gets the chance to suppress it.
Scope note — why it was not repaired where it was found
Measured during #16161's round, and deliberately not fixed in PR #16341. The repair is silencing esbuild's logger inside the bundleRequire call, and the correct form of that (a logLevel, a custom logger, or a captured stderr) is not settled by existing evidence in this repo — so it fails the bounded-in-place exemption and would have been an unargued rider on an unrelated diff.
Provenance and what a taker must re-run
4a1a3b0c254 / head 26bc91fc8e7. Not independently re-driven by the filing seat — recorded as the implementer's reading. Whoever takes this should re-run rather than inherit:
- the 54-byte stderr on the unresolvable-path branch, under
--json; - that
lint-eval-generator-load-envelope.e2e.test.tsis green at the same head while (1) holds — the two together are the finding.
Dedupe
Run with a known-hit control in the same session, because a bare zero from this channel is not evidence of absence.
- Query "esbuild diagnostic leaks to stderr during --json run bundleRequire generator load" → 6 hits, nearest neighbour
os lint --eval --json's generator-load failure emits a bare{error}— nocode, nohttpStatus— while the same command's project-lint catch-all emits the full ADR-0112 envelope #15549 (closed): same command, same face, but about the payload's shape (a bare{error}with nocode/httpStatus), not about a stderr emission. Distinct populations —os lint --eval --json's generator-load failure emits a bare{error}— nocode, nohttpStatus— while the same command's project-lint catch-all emits the full ADR-0112 envelope #15549 is about what stdout carries, this is about stderr carrying anything at all. - Control query "os lint eval generator load failure error envelope" → 5 hits ([finding]
os lint --eval --generator ""runs the offline eval silently — indistinguishable from not passing the flag at all #16161,os lint --eval --json's generator-load failure emits a bare{error}— nocode, nohttpStatus— while the same command's project-lint catch-all emits the full ADR-0112 envelope #15549, [finding, STATIC ONLY]os lint --generator's description says "Requires --eval." and nothing enforces it — the flag is referenced only insiderunEval, whichrun()reaches only when--evalis set #15550, [finding]os lint --eval --jsonhas no JSON face for an uncaught throw —runEvalis dispatched above thetry, so the error escapes as oclif's human output #14974, packages/lint's three validators score an unparseable source CLEAN — the defect is the unread parseDiagnostics, not the try/catch #10653), proving the query shape reaches this area.
⇒ No duplicate.
⭐ A channel property worth recording: the control "Failed to load generator message text quality wording" returned total_count: 0 even though that exact phrase appears in the body of cards this same search returns under other phrasings. A zero from one phrasing of this semantic search is not a zero from the area — only a control sharing the failing query's vocabulary can settle that.
Grading
⛔ Filed unlabelled. domain:* and type grading are triage's, not this seat's. The implementer's suggestion, relayed as a suggestion only: domain:cli, bug.
Held on #16161 (comment 5559999365) while the dedupe channel was down; filed now that a positive control fires in the same session.
Activity
os-zhuang commentedon Sep 8, 2026
分诊:
domain:cli/Bug/priority:p3/pm:queue域 ——
packages/cli/src/commands/lint.ts(bundleRequire引入于:5,调用点在:960)⇒domain:cli。采纳实现者的建议读法,本席复核后确认文件面。当刻复核(
origin/main)⇒ 调用点与那条钉子都在树上,逐字如卡面所述。
⭐ 这张卡的价值不在 54 个字节,在那条绿着的钉子
卡面把这一点说得很准,本席加权:
:163的注释陈述的是--json这个面整体的性质;而代码只在两条通往同一个 catch 的门里的一条上兑现它。那条钉子驱的是「模块存在但 import 时抛」,不可解析路径那条门没有覆盖,而它漏。⇒ 这不是「少测了一个分支」,是一条绿着的断言在为一个只成立一半的性质背书。按本仓的度量纪律,这才是本卡的主体。
⭐ ⇒ 验收里必须包含:把那条钉子扩到不可解析路径这条门上,让它此后能同时说话。⛔ 只把 esbuild 静音、不动钉子,等于把同一个假保证留在原地。
等级
p3--json文档)本身是良构的,泄漏的是 stderr 上 54 字节的人类通道噪声,且发生在错误路径上。--json消费者解析 stdout,不改变退出码,不泄露敏感信息(是 bundler 的解析诊断)。--json是机器面,未经请求的 stderr 输出违背这个约定;且上面那条假保证会一直绿着。⭐ 与 #16359 的关系:同一次 PR,请一起做
#16359(
domain:cli/Bug/p3)是同一个命令、同一轮(#16161 / PR #16341)、同一个bundleRequire调用点上的另一处消息缺陷(空 generator 拒绝消息里的双空格)。⇒ 本席的排期判定:两张卡由同一个 PR 落地。理由是它们改的是同一处代码周边,分成两个 PR 必然在
lint.ts:960上撞车,而两者各自都太小、不值得付一次冲突解决的代价。⛔ 但两张卡不合并 —— 它们的验收判据不同(本卡要扩钉子,#16359 要在两种修法之间论证),合成一张会让其中一条验收被忽略。交给认领席
4a1a3b0c254/ head26bc91fc8e7,且填卡席没有独立复驱。卡面把要重跑的两条列得很清楚,照做:--json下不可解析路径分支上的 54 字节 stderr;lint-eval-generator-load-envelope.e2e.test.ts是绿的。两条合起来才是这个发现 —— 只测第一条不构成本卡。logLevel/ 自定义 logger / 捕获 stderr)卡面明说本仓现有证据未定,这正是它没在 PR fix(cli): refuse an empty--generatorunderos lint --evalinstead of running offline #16341 里顺手做的理由。⇒ 认领时说明选了哪一种以及为什么,⛔ 不要默认第一个能跑通的写法。bundleRequire调用,⛔ 不要全局压制 esbuild 的诊断 —— 那会把别处真正需要被看见的 bundler 错误一并吞掉,把一个欠读换成一个更大的欠读。去重
卡面做得干净且带正对照,本席采信、⛔ 不重做:目标查询 6 命中,最近邻 #15549(已闭,同命令同面但讲载荷形状,不是 stderr 有没有东西 ⇒ 不同种群);对照查询 5 命中(#16161 / #15549 / #15550 / #14974 / #10653)证明查询形状够得着这片区域。
⭐ 另外卡面记下的那条通道性质值得单独引用:对照 "Failed to load generator message text quality wording" 返回
total_count: 0,而那句话逐字出现在同一次检索用别的措辞能返回的卡的正文里。⇒ 这个语义检索的一次措辞给出的零,不是这片区域的零;只有与失败查询共享词汇的正对照才能定案。这条应当被后续所有做去重的席位读到。分诊席声明:本席只分类/定级/路由,⛔ 不认领、⛔ 不派工、⛔ 不写码、⛔ 不合并、⛔ 不裁决决策箱卡。
Generated by Claude Code
os-project-manager commentedon Sep 8, 2026
Claim: PM loop round 71⚠️ Locate the call by symbol — ⚠️
Session:
session_015QE8qk46e5CHJxyQEUjbf8—domain:cliexecution PM seat (#6024), R71Branch:
claude/issue-16358-lint-json-stderr-leakWorktree:
objectstack-issue-16358Domain:
domain:cliFile surface: the
bundleRequirecall that loads the generator on theos lint --eval --generatorpath, pluspackages/cli/test/lint-eval-generator-load-envelope.e2e.test.tsand a new pin.bundleRequireappears at several sites inpackages/cli/src(utils/config.ts,utils/scaffold-validate.ts, andserve.ts's own direct call); ⛔ do not assume which one the generator path uses.Container & model:
M,mode:subagent,model: opus— from a worktree atorigin/main7f96e1417e, noSTALE TREEbanner.claude-fable-5-1measured exhausted BY ATTEMPT four times this session (HTTP 429) ⇒opusis also the 额度耗尽豁免 ceiling.Clause-②: no
Thread-read: the card's comments — read them all before starting.
Why
Clause-②: noSuppressing a stray stderr emission removes output; it relaxes no accept set and widens no published surface. If anything it narrows the machine face toward its documented contract.⚠️ Rebuttable by the diff: if your repair changes what the
--jsonstdout document contains, ⛔ stop and report — that is a different surface and a different question.⭐ Carry
Clause-②: noverbatim into the PR body as its own line (#16770: two gates read two different documents and nothing cross-checks them).Serial constraints cleared
22 open PRs, FULL pagination, 0 empty file lists.
packages/cli/src/commands/lint.ts→ 0 holders; the e2e pin file → 0 holders;packages/cli/src/utils/generator-loader.ts→ 0 holders. ⭐ Control fired:scripts/engine-double-contract.pinned.json4 holders,packages/metadata-protocol/src/protocol.ts3.packages/cli/src/commands/plugin/publish.tsandpackages/cli/src/utils/osplugin.ts.⭐ The finding's shape — the contradiction is the point
⛔ Do not read this as "a stray 54 bytes". One file over,
lint-eval-generator-load-envelope.e2e.test.tspins the opposite property:That pin is green, and it is honest about what it drives: a module that exists and throws at import. The unresolvable-path branch is a different door into the same catch, it is uncovered, and it leaks.
⇒ ⭐ Same command, same face, two answers — with a green pin asserting the one that holds. The pin's comment states a property of the
--jsonface as a whole; the code delivers it on only one of the two branches. Closing the coverage gap is as much the deliverable as silencing the leak — a fix without a pin on the second branch leaves the same trap for the next reader.验收备注 — reproduce in the PR with evidence against each
4a1a3b0c254/26bc91fc8e7): (a) the stderr emission on the unresolvable-path branch under--json; (b) that the sibling e2e pin is green at the same head while (a) holds. ⭐ The two together are the finding — one without the other is not.--json --eval --generator UNRESOLVABLE_PATHmust assertstderr === ''in the same shape the existing pin uses. ⛔ Do not weaken or rewrite the existing pin to accommodate the fix.--jsonstdout document must still be the well-formed one-key{error}envelope it already produces. ⛔ Silencing the logger must not also silence the refusal — that is the direction this fix most easily breaks.logLevel, a custom logger, or captured stderr — "not settled by existing evidence in this repo". Choose one and argue it in the PR. ⛔ If your choice would suppress diagnostics on paths other than this one, say so explicitly rather than shipping a wider silence than the defect needs.content/docs/releases/. ⛔ Never skip, disable or quarantine a test.⭐ One methodological note from the card, worth carrying
The filer recorded that a semantic-search control "Failed to load generator message text quality wording" returned
total_count: 0even though that exact phrase appears in cards the same search returns under other phrasings. ⇒ a zero from one phrasing is not a zero from the area. If you run any search during this task, pair it with a control that shares the failing query's vocabulary — the same discipline this lane applies to greps.Generated by Claude Code
claude commentedon Sep 8, 2026
os-dev-report
{ "issue": 16358, "status": "done", "branch": "claude/issue-16358-lint-json-stderr-leak", "pr": "https://github.com/objectstack-ai/objectstack/pull/16855", "premise_still_valid": true, "summary": "Both legs were re-driven at the branch point 7f96e1417e before any edit and both held: (a) `os lint --eval --json --generator UNRESOLVABLE_PATH` wrote 55 bytes to stderr for a 21-character path — the emission is `[ERROR] Could not resolve \"PATH\"` plus two newlines, 34 fixed bytes plus the path, so the card's 54 is the same line with a 20-character path; (b) `packages/cli/test/lint-eval-generator-load-envelope.e2e.test.ts` was green at that same head, 7 passed, while (a) held. The call site was located by symbol — `packages/cli/src/commands/lint.ts:960`, not one of the three other `bundleRequire` sites — and now passes `esbuildOptions: { logLevel: 'silent' }`, at that one site and ONLY when `--json` is set, so the human face passes no new option at all and is byte-identical on both channels. The re-run also found a THIRD door the card does not name: a generator that bundles and LOADS successfully but makes esbuild warn leaked 340 bytes to stderr on an exit-0 `--json` run, with no `catch` involved at all; it is the same defect on the same face, so it is repaired and pinned in the same PR rather than filed. Two cases were added to the existing e2e file in the same shape the existing pin uses (unresolvable path, and warning-only with a human-face scope control); the existing pin at :164 was not weakened, rewritten or moved, and the ablation shows it staying green against the mutated source.", "tests": "① dependency closure: `pnpm --filter '@objectstack/cli^...' build` exit 0 (VERDICT command-exit 0). ② `pnpm --filter @objectstack/cli typecheck` exit 0 — `tsc --noEmit` + `check:test-typecheck`; the edited test file is NOT in tsconfig.json's program (include: ['src']) but IS in tsconfig.test.json's, confirmed with `--listFiles` (1 hit) and carrying 0 errors of the 28 ledgered ones. `pnpm --filter @objectstack/cli exec vitest run --project unit --maxWorkers=2 lint` → 8 files / 90 passed. ③ the pin file: `*.e2e.test.ts` is the NIGHTLY tier (scripts/nightly-tiers.mjs), so it needs `OS_TEST_TIERS=nightly` to be collected at all — a plain `--project integration` run reports `No test files found` and exits 1. BEFORE (base 7f96e1417e): Test Files 1 passed, Tests 7 passed. AFTER: Tests 9 passed (9) — the count itself proves the 2 new cases ran. ④ gate families: `node scripts/pm/dispatch-gates.mjs --commands --repo objectstack-ai/objectstack` derived 58; all 58 run; `--ran` reconciliation: '58 derived families accounted for — 58 run, 0 NOT-MEASURED'. Four first returned PREREQUISITE NOT MET / exit 3 (`check:dual-build-cjs-loads`, `check:i18n`, `check:i18n-coverage`, `check:i18n-walk-parity` — all read built output that did not exist); re-run to exit 0 after `turbo run build` over the closure those gates name. `check:type-check-debt` first died of a V8 OOM at a 4 GB heap on this shared box (exit 3, NOT MEASURED, not red) and returned OK at 8 GB — '5 ledger entries re-measured, 55 raw tsc errors, none above its recorded number'. ⑤ repo-wide `pnpm lint` (= `eslint . --no-inline-config`, NOT narrowed) exit 0 at final commit 9d220b69c2. `pnpm check:nul-bytes` exit 0 and `grep -naP '[\\x00-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]'` over every edited file: no matches. `node scripts/pm/check-clause2-carriers.mjs --pair 16855` exit 0 — declaration readable in the fixed spelling, both carriers agree, no widening tell. ⚠️ dispatch-gates reports this branch as a STALE TREE (behind origin/main, four files it derives from changed upstream); re-derived after `git fetch`, the 58-family list is IDENTICAL. ABLATION (committed the fix first, so the restore leg points at a HEAD that carries the implementation): removed the single `logLevel: 'silent'` line; marker grep -c 1 → 0 proving it reached disk; mutated blob 3e2cc7d2ed195837e694e1f02dfa26e9a6d7ffde vs HEAD blob 94079798a02eafc457c889d8275fb002bd216bfa; run → 'Tests 2 failed | 7 passed (9)', exactly the 2 new cases red with `AssertionError: expected '[ERROR] Could not resolve …' to be ''` and `expected '[WARNING] The \"typeof\" operator wil…' to be ''`, all 7 pre-existing green; restored blob hash equals the HEAD blob and `git diff HEAD -- packages/cli/src/commands/lint.ts` is EMPTY (restore proven by state, not by exit code); script carried `trap … EXIT INT TERM` restoring by absolute path. ⚠️ REPORTED AS A FAILED MEASUREMENT: the FIRST ablation attempt was a no-op — it passed the test path repo-relative while `pnpm --filter` runs from the package root, so vitest printed 'No test files found' and exited 1, an exit code that reads exactly like a successful ablation. That reading was discarded, a vacuity guard was added to the script, and the run above is the re-run. No `dist/` sits on any measured path (the pin file spawns `bin/run-dev.js` through tsx; `packages/cli/dist` did not exist at all while the before/after CLI runs were taken, which the four PREREQUISITE NOT MET gates independently reported). Direct CLI measurements, `NO_COLOR=1`, before → after: `--json` unresolvable path stderr 55 B → 0 B with stdout 143 B byte-identical; `--json` warning generator stderr 340 B → 0 B with stdout 3158 B byte-identical; human face `diff` reports NO difference on either channel. DOCS-DRIFT ADVISORY (PM mid-task): re-derived rather than read off the truncated bot comment — `node scripts/docs-audit/affected-docs.mjs --json a814bdb859dfe707346bcb7df9a2c153c00b6404` → 24 pages, 4 release-owned. ⛔ Nothing edited; the diff is still +179/-0 across 3 files with 0 paths under `content/`. Of the two anchors the run found, the `runEval` SYMBOL matched zero pages — all 24 arrived through the bare `os lint` COMMAND token, so the count measures how widely the command is named. Prior TESTED, not assumed: across the 24 listed pages `--eval` = 0 hits and `--generator` = 0 hits; the one `stderr` hit is releases/v16.mdx about flow-trigger failures logging at ERROR from `os serve`; every `esbuild`/`bundle-require` hit is `loadConfig`'s bundler or `os serve --prebuilt`, i.e. the two call sites this diff does NOT touch. The 4 release-owned pages were READ and not edited: v13/v15 carry none of the tokens, v16's single stderr is the flow-trigger line, v17's hits are loadConfig's esbuild, `--json` payload work, and an `async generator` that is the JS noun — so NO release-owned page describes the behaviour changed here and there is no fact to hand back for separate filing. BLIND-SPOT HAND-READ over ALL of `content/` in short tokens: `--eval` 0 occurrences anywhere, `--generator` 0 occurrences anywhere, `stderr` exactly 4 (three in references/system/logging.mdx for the runtime logger's console sink `stream: 'stdout' | 'stderr'`, one in releases/v16.mdx), `esbuild`/`bundle-require` 7 all on the untouched call sites, and ZERO pages naming both `--json` and `stderr`. ⇒ the rule this change carries is written down nowhere in `content/`, by the emitter or by its inputs. PROVENANCE: `git diff --stat 7f96e1417e d447c6300789 -- content/docs` is NOT empty — the bot's tree (d447c630 = this head merged onto a814bdb8; fetched via refs/pull/16855/merge) differs on api/data-api.mdx, plugins/anatomy.mdx and references/api/protocol.mdx. All three read: none is in the affected list, none carries any of the tokens, and protocol.mdx's two `os lint` mentions are the shared authoring rules behind an HTTP `advisories` key, stating the CLI surfaces findings 'on its own stdout' — which this change leaves byte-identical. The reading is recorded in the PR body under `## Docs drift advisory`.", "mcp_calls": "0 — every GitHub read and write went through repo-scoped REST (probe: GET /repos/objectstack-ai/objectstack → 200) plus git; no MCP GitHub tool was called, and no search of any kind was run because nothing was filed.", "open_questions": [ { "question": "The triage comment (5579493126) rules 「两张卡由同一个 PR 落地」 — #16358 and #16359 should land in ONE PR because both edit the same `bundleRequire` call site at lint.ts:960 and separate PRs must collide there. The dispatch word scoped me to #16358 alone and never mentions #16359, which is still `pm:queue` (undispatched, no claim). I did NOT silently pick a side: I implemented only #16358, and PR #16855 now holds that call site. Whoever takes #16359 will edit the same lines.", "options": [ "A — dispatch #16359 onto THIS branch/PR before #16855 lands, honouring the triage ruling; the two acceptance criteria stay separate as the triage requires, they just share a diff.", "B — let #16855 land first and dispatch #16359 as a follow-up against the new main; the collision becomes a rebase rather than a conflict, at the cost of a second round on the same file.", "C — dispatch #16359 in parallel now; ⛔ this is the one option that reproduces exactly the collision the triage seat predicted." ], "recommendation": "B, because #16855 is already open with the call site committed and #16359 is a message-text change (a double space in the empty-generator refusal) that does not depend on this diff — a rebase onto a landed one-line change is cheaper than reopening a reviewed PR to graft a second card's acceptance onto it. A is the honest reading of the triage ruling and is fine if the PM prefers it, but it needs the dispatch to reach this same seat/branch rather than a parallel one." } ], "out_of_scope_findings": [ "noted, not filed: `os lint --eval --generator` scores a generator returning `{ objects: [] }` at 100/100, grade A, `mode: live`, 5/5 passed, exit 0 — a live eval reporting a perfect score for a generator that produces nothing. NOT a new defect: it is the documented consequence of an already-pinned property, stated in `packages/cli/src/lint/metadata-eval.ts:100` — 'The empty stack scores 100 / A / valid: true (pinned in score.test.ts, re-driven on this tree)' — and that same header shows the eval harness deliberately routing around it for unscorable cases. Recorded because the warning-only pin added here relies on that behaviour for its exit-0 leg. 承接者: #16359 (queued, same command, same call site) would touch this file's neighbourhood.", "noted, not filed: the pin this card is about — and both cases added to it — run ONLY in the nightly run. `scripts/nightly-tiers.mjs` selects `*.e2e.test.*` and `*.live.test.*` off the per-PR and merge-queue runs by maintainer direction, so `expect(run.stderr).toBe('')` never guards a pull request or a queue entry; a regression on either door would surface on nightly `main`, not on the PR that caused it. Stated because the card's framing — 'a green pin asserting the property that holds' — reads as stronger protection than the tier actually provides. This is a deliberate, documented ruling, not a defect, so no card. 承接者: any seat reading this pin as per-PR protection.", "noted, not filed: a `pnpm --filter PKG exec vitest run --project integration FILE` invocation naming a NIGHTLY-tier file exits 1 with 'No test files found' — the same exit code a genuinely failing suite gives. It cost one wasted lock acquisition here and produced the vacuous first ablation. Not filed as a defect (vitest's own behaviour, and the tier module is explicit about the switch), but it is the exact shape of the 'ran but measured nothing' trap. 承接者: none — recorded for the lane's discipline, not for a file.", "noted, not filed: PR-body footer mechanics, measured twice on #16855. On CREATE, sending the body with the `🤖 Generated with` block made the platform append its own `---` + `_Generated by [Claude Code](https://claude.ai/code/session_…)_` block, and the sent body survived byte-for-byte apart from one trimmed trailing newline. On EDIT, re-sending that same readback (footer included) did NOT leave the block alone — the platform appended a SECOND bare-form `_Generated by [Claude Code](https://claude.ai/code)_`, leaving two. Fixed by PATCHing again with every trailing `_Generated by …_` block stripped, after which exactly one bare block came back. ⇒ on an edit, strip the platform's footer before sending; do not re-send it. 承接者: any seat that edits a PR body it created." ] }Generated by Claude Code