Migrate to catalogs

.chronus/changes/pnpm-catalogs-2026-2-24-15-9-10.md

@@ -0,0 +1,41 @@
+---
+# Change versionKind to one of: internal, fix, dependencies, feature, deprecation, breaking
+changeKind: internal
+packages:
+  - "@typespec/asset-emitter"
+  - "@typespec/bundler"
+  - "@typespec/compiler"
+  - "@typespec/emitter-framework"
+  - "@typespec/eslint-plugin"
+  - "@typespec/events"
+  - "@typespec/html-program-viewer"
+  - "@typespec/http-canonicalization"
+  - "@typespec/http-client-js"
+  - "@typespec/http-client"
+  - "@typespec/http-server-csharp"
+  - "@typespec/http-server-js"
+  - "@typespec/http-specs"
+  - "@typespec/http"
+  - "@typespec/internal-build-utils"
+  - "@typespec/json-schema"
+  - "@typespec/library-linter"
+  - "@typespec/mutator-framework"
+  - "@typespec/openapi"
+  - "@typespec/openapi3"
+  - "@typespec/playground"
+  - "@typespec/prettier-plugin-typespec"
+  - "@typespec/protobuf"
+  - "@typespec/rest"
+  - "@typespec/spec-api"
+  - "@typespec/spec-coverage-sdk"
+  - "@typespec/spector"
+  - "@typespec/sse"
+  - "@typespec/streams"
+  - tmlanguage-generator
+  - "@typespec/tspd"
+  - typespec-vscode
+  - "@typespec/versioning"
+  - "@typespec/xml"
+---
+
+Migrate to catalogs

.github/copilot-instructions.md

@@ -109,7 +109,7 @@ TypeSpec is a language for defining cloud service APIs and shapes. This monorepo
 - Generate external signatures: `pnpm gen-compiler-extern-signature`
 - Regenerate samples: `pnpm regen-samples`
 - Regenerate docs: `pnpm regen-docs`
-- Sync dependency versions: `pnpm fix-version-mismatch`
+- Check catalog usage: `pnpm check-catalog`
 
 ## Troubleshooting
 

.github/workflows/consistency.yml

@@ -103,7 +103,7 @@ jobs:
       - run: pnpm run lint
         name: Lint
 
-  # Check version mismatch
+  # Check that all dependencies use the pnpm catalog
   version-consistency:
     name: Versions consistency
     runs-on: ubuntu-latest
@@ -117,5 +117,5 @@ jobs:
       - run: pnpm install
         name: Install dependencies
 
-      - run: pnpm run check-version-mismatch
-        name: Check version mismatch
+      - run: pnpm run check-catalog
+        name: Check catalog usage

cspell.yaml

@@ -256,7 +256,6 @@ words:
   - strs
   - stubbed
   - swaggerui
-  - syncpack
   - TCGC
   - terlson
   - timegm
@@ -337,6 +336,7 @@ ignorePaths:
   - packages/mutator-framework/**/*.test.ts
   - packages/typespec-vscode/test/scenarios/**
   - pnpm-lock.yaml
+  - pnpm-workspace.yaml
   - "**/*.mp4"
   - "**/*.plist"
   - .git/**

docker/Dockerfile

@@ -19,7 +19,7 @@ RUN pnpm install --filter "@typespec/compiler..."
 RUN pnpm --filter "@typespec/compiler..." run build
 
 WORKDIR /app/packages/compiler
-RUN npm pack
+RUN pnpm pack
 
 # --------------------------------
 #  Setup final image

eng/common/scripts/check-catalog.ts

@@ -0,0 +1,115 @@
+import { execSync } from "child_process";
+import { readFileSync } from "fs";
+import { join, relative } from "path";
+import { parse } from "yaml";
+import { repoRoot } from "./utils/common.js";
+
+/**
+ * Validates that all workspace package dependencies use `catalog:` or `workspace:` protocols,
+ * ensuring versions are centrally managed via the pnpm catalog in pnpm-workspace.yaml.
+ */
+
+interface WorkspaceConfig {
+  catalog?: Record<string, string>;
+}
+
+const workspaceConfig: WorkspaceConfig = parse(
+  readFileSync(join(repoRoot, "pnpm-workspace.yaml"), "utf8"),
+);
+const catalog = workspaceConfig.catalog ?? {};
+
+/**
+ * Dependencies that are allowed to use explicit versions instead of catalog:.
+ * Each entry maps a package.json path (relative to repo root) to a set of dependency names.
+ */
+const exceptions: Record<string, Set<string>> = {
+  // vsce needs a real semver for @types/vscode to determine VS Code engine compatibility
+  "packages/typespec-vscode/package.json": new Set(["@types/vscode"]),
+};
+
+const depTypes = ["dependencies", "devDependencies", "peerDependencies"] as const;
+
+const errors: string[] = [];
+const warnings: string[] = [];
+
+// Resolve workspace packages from pnpm
+const pnpmOutput = execSync("pnpm ls -r --json --depth -1", {
+  cwd: repoRoot,
+  encoding: "utf8",
+});
+const workspacePackages: { path: string }[] = JSON.parse(pnpmOutput);
+const packageJsonPaths: string[] = workspacePackages.map((p) =>
+  join(relative(repoRoot, p.path), "package.json"),
+);
+
+for (const relPath of packageJsonPaths) {
+  const fullPath = join(repoRoot, relPath);
+  const pkg = JSON.parse(readFileSync(fullPath, "utf8"));
+  const fileExceptions = exceptions[relPath] ?? new Set();
+
+  for (const depType of depTypes) {
+    const deps: Record<string, string> | undefined = pkg[depType];
+    if (!deps) continue;
+
+    for (const [name, version] of Object.entries(deps)) {
+      if (version === "catalog:" || version.startsWith("workspace:")) {
+        continue;
+      }
+      if (fileExceptions.has(name)) {
+        // Allowed exception — but warn if it drifts from the catalog
+        if (catalog[name] && catalog[name] !== version) {
+          warnings.push(
+            `${relPath}: ${depType}.${name} has version "${version}" but catalog has "${catalog[name]}". Keep them in sync.`,
+          );
+        }
+        continue;
+      }
+      errors.push(
+        `${relPath}: ${depType}.${name} uses explicit version "${version}" instead of "catalog:".`,
+      );
+    }
+  }
+}
+
+// Check that every catalog entry is actually used somewhere
+const usedCatalogEntries = new Set<string>();
+for (const relPath of packageJsonPaths) {
+  const fullPath = join(repoRoot, relPath);
+  const pkg = JSON.parse(readFileSync(fullPath, "utf8"));
+  for (const depType of depTypes) {
+    const deps: Record<string, string> | undefined = pkg[depType];
+    if (!deps) continue;
+    for (const [name, version] of Object.entries(deps)) {
+      if (version === "catalog:") {
+        usedCatalogEntries.add(name);
+      }
+    }
+  }
+}
+
+for (const name of Object.keys(catalog)) {
+  if (!usedCatalogEntries.has(name)) {
+    warnings.push(`pnpm-workspace.yaml: catalog entry "${name}" is not used by any package.`);
+  }
+}
+
+// Report results
+if (warnings.length > 0) {
+  console.log(`\n⚠ Warnings (${warnings.length}):`);
+  for (const w of warnings) {
+    console.log(`  ${w}`);
+  }
+}
+
+if (errors.length > 0) {
+  console.log(`\n✘ Errors (${errors.length}):`);
+  for (const e of errors) {
+    console.log(`  ${e}`);
+  }
+  console.log(
+    '\nAll external dependencies must use "catalog:" protocol. Add the version to the catalog in pnpm-workspace.yaml and use "catalog:" in package.json.',
+  );
+  process.exit(1);
+}
+
+console.log("✔ All dependencies are using catalog: or workspace: protocols.");

package.json

@@ -9,12 +9,11 @@
     "build:all": "pnpm -r --workspace-concurrency=Infinity build",
     "check:eng": "tsc -p ./tsconfig.eng.json --noEmit",
     "setup:min": "pnpm install && pnpm --filter \"@typespec/prettier-plugin-typespec...\" --filter \"@typespec/tspd...\" run build",
-    "check-version-mismatch": "syncpack list-mismatches",
+    "check-catalog": "tsx eng/common/scripts/check-catalog.ts",
     "change": "chronus",
     "clean": "pnpm -r run clean",
     "cspell": "cspell --no-progress .",
     "dogfood": "pnpm install && pnpm build && pnpm -r dogfood",
-    "fix-version-mismatch": "syncpack fix-mismatches",
     "format": "prettier . --write",
     "format:check": "prettier . --check",
     "format:dir": "prettier --write",
@@ -41,46 +40,35 @@
     "tsp-integration": "node packages/tsp-integration/cmd/tsp-integration.js"
   },
   "devDependencies": {
-    "@chronus/chronus": "^1.3.1",
-    "@chronus/github": "^1.0.6",
-    "@chronus/github-pr-commenter": "^1.0.6",
-    "@eslint/js": "^10.0.1",
-    "@microsoft/api-extractor": "^7.57.7",
-    "@octokit/core": "^7.0.6",
-    "@octokit/plugin-paginate-graphql": "^6.0.0",
-    "@octokit/plugin-rest-endpoint-methods": "^17.0.0",
-    "@types/micromatch": "^4.0.10",
-    "@types/node": "~25.5.0",
-    "@vitest/coverage-v8": "^4.1.0",
-    "@vitest/eslint-plugin": "^1.6.12",
-    "c8": "^11.0.0",
-    "cspell": "^9.7.0",
-    "eslint": "^10.0.3",
-    "eslint-plugin-react-hooks": "7.0.1",
-    "eslint-plugin-unicorn": "^63.0.0",
-    "micromatch": "^4.0.8",
-    "picocolors": "~1.1.1",
-    "playwright": "^1.58.2",
-    "prettier": "~3.8.1",
-    "prettier-plugin-astro": "^0.14.1",
-    "prettier-plugin-organize-imports": "~4.3.0",
-    "prettier-plugin-sh": "^0.18.0",
-    "rimraf": "~6.1.3",
-    "syncpack": "^13.0.3",
-    "tsx": "^4.21.0",
-    "typescript": "~5.9.3",
-    "typescript-eslint": "^8.57.0",
-    "vitest": "^4.1.0",
-    "yaml": "~2.8.2"
-  },
-  "syncpack": {
-    "dependencyTypes": [
-      "dev",
-      "overrides",
-      "peer",
-      "pnpmOverrides",
-      "prod",
-      "resolutions"
-    ]
+    "@chronus/chronus": "catalog:",
+    "@chronus/github": "catalog:",
+    "@chronus/github-pr-commenter": "catalog:",
+    "@eslint/js": "catalog:",
+    "@microsoft/api-extractor": "catalog:",
+    "@octokit/core": "catalog:",
+    "@octokit/plugin-paginate-graphql": "catalog:",
+    "@octokit/plugin-rest-endpoint-methods": "catalog:",
+    "@types/micromatch": "catalog:",
+    "@types/node": "catalog:",
+    "@vitest/coverage-v8": "catalog:",
+    "@vitest/eslint-plugin": "catalog:",
+    "c8": "catalog:",
+    "cspell": "catalog:",
+    "eslint": "catalog:",
+    "eslint-plugin-react-hooks": "catalog:",
+    "eslint-plugin-unicorn": "catalog:",
+    "micromatch": "catalog:",
+    "picocolors": "catalog:",
+    "playwright": "catalog:",
+    "prettier": "catalog:",
+    "prettier-plugin-astro": "catalog:",
+    "prettier-plugin-organize-imports": "catalog:",
+    "prettier-plugin-sh": "catalog:",
+    "rimraf": "catalog:",
+    "tsx": "catalog:",
+    "typescript": "catalog:",
+    "typescript-eslint": "catalog:",
+    "vitest": "catalog:",
+    "yaml": "catalog:"
   }
 }

packages/asset-emitter/package.json

@@ -45,13 +45,13 @@
     "@typespec/compiler": "workspace:^"
   },
   "devDependencies": {
-    "@types/node": "~25.5.0",
+    "@types/node": "catalog:",
     "@typespec/compiler": "workspace:^",
-    "@vitest/coverage-v8": "^4.1.0",
-    "@vitest/ui": "^4.1.0",
-    "c8": "^11.0.0",
-    "rimraf": "~6.1.3",
-    "typescript": "~5.9.3",
-    "vitest": "^4.1.0"
+    "@vitest/coverage-v8": "catalog:",
+    "@vitest/ui": "catalog:",
+    "c8": "catalog:",
+    "rimraf": "catalog:",
+    "typescript": "catalog:",
+    "vitest": "catalog:"
   }
 }

packages/astro-utils/package.json

@@ -23,20 +23,20 @@
     "watch": "tsc -p ./tsconfig.build.json --watch"
   },
   "devDependencies": {
-    "@types/react": "~19.2.14",
-    "astro": "^6.0.4"
+    "@types/react": "catalog:",
+    "astro": "catalog:"
   },
   "peerDependencies": {
-    "astro": "^6.0.4"
+    "astro": "catalog:"
   },
   "dependencies": {
-    "@astrojs/check": "^0.9.7",
-    "@astrojs/starlight": "^0.38.1",
-    "@expressive-code/core": "^0.41.7",
+    "@astrojs/check": "catalog:",
+    "@astrojs/starlight": "catalog:",
+    "@expressive-code/core": "catalog:",
     "@typespec/playground": "workspace:^",
-    "astro-expressive-code": "^0.41.7",
-    "pathe": "^2.0.3",
-    "react": "~19.2.4",
-    "typescript": "~5.9.3"
+    "astro-expressive-code": "catalog:",
+    "pathe": "catalog:",
+    "react": "catalog:",
+    "typescript": "catalog:"
   }
 }

packages/best-practices/package.json

@@ -44,13 +44,13 @@
     "@typespec/compiler": "workspace:^"
   },
   "devDependencies": {
-    "@types/node": "~25.5.0",
+    "@types/node": "catalog:",
     "@typespec/compiler": "workspace:^",
-    "@vitest/coverage-v8": "^4.1.0",
-    "@vitest/ui": "^4.1.0",
-    "c8": "^11.0.0",
-    "rimraf": "~6.1.3",
-    "typescript": "~5.9.3",
-    "vitest": "^4.1.0"
+    "@vitest/coverage-v8": "catalog:",
+    "@vitest/ui": "catalog:",
+    "c8": "catalog:",
+    "rimraf": "catalog:",
+    "typescript": "catalog:",
+    "vitest": "catalog:"
   }
 }