refactor(fmt): replace WorkTank with Tinypool

packages/rstack/THIRD_PARTY_NOTICES.md

@@ -273,63 +273,6 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 
-## isoconcurrency
-
-This package includes bundled code from
-[isoconcurrency](https://github.com/fabiospampinato/isoconcurrency).
-
-License: MIT
-
-The MIT License (MIT)
-
-Copyright (c) 2025-present Fabio Spampinato
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the "Software"),
-to deal in the Software without restriction, including without limitation
-the rights to use, copy, modify, merge, publish, distribute, sublicense,
-and/or sell copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-
-## isotimer
-
-This package includes bundled code from [isotimer](https://github.com/fabiospampinato/isotimer).
-
-License: MIT
-
-The MIT License (MIT)
-
-Copyright (c) 2025-present Fabio Spampinato
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the "Software"),
-to deal in the Software without restriction, including without limitation
-the rights to use, copy, modify, merge, publish, distribute, sublicense,
-and/or sell copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-
 ## micromatch
 
 This package includes bundled code from [micromatch](https://github.com/micromatch/micromatch).
@@ -577,60 +520,3 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 DEALINGS IN THE SOFTWARE.
-
-## webworker-shim
-
-This package includes bundled code from
-[webworker-shim](https://github.com/fabiospampinato/webworker-shim).
-
-License: MIT
-
-The MIT License (MIT)
-
-Copyright (c) 2022-present Fabio Spampinato
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the "Software"),
-to deal in the Software without restriction, including without limitation
-the rights to use, copy, modify, merge, publish, distribute, sublicense,
-and/or sell copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-
-## worktank
-
-This package includes bundled code from [worktank](https://github.com/fabiospampinato/worktank).
-
-License: MIT
-
-The MIT License (MIT)
-
-Copyright (c) 2021-present Fabio Spampinato
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the "Software"),
-to deal in the Software without restriction, including without limitation
-the rights to use, copy, modify, merge, publish, distribute, sublicense,
-and/or sell copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.

packages/rstack/package.json

@@ -58,6 +58,7 @@
     "@rslint/core": "catalog:",
     "@rstest/core": "catalog:",
     "prettier": "catalog:",
+    "tinypool": "catalog:",
     "yuku-parser": "catalog:"
   },
   "devDependencies": {
@@ -78,8 +79,7 @@
     "rslog": "catalog:",
     "sort-package-json": "catalog:",
     "tiny-readdir": "catalog:",
-    "typescript": "catalog:",
-    "worktank": "catalog:"
+    "typescript": "catalog:"
   },
   "peerDependencies": {
     "@rspress/core": "^2.0.17"

packages/rstack/src/fmt/runner.ts

@@ -50,7 +50,7 @@ const runFmtFilesInWorkerPool = async (
     );
     return results.filter((result): result is FmtFileResult => result !== undefined);
   } finally {
-    workerPool.terminate();
+    await workerPool.terminate();
   }
 };
 

packages/rstack/src/fmt/worker.ts

@@ -13,6 +13,11 @@ import type { FmtFileRequest } from './types.ts';
 type PrettierPlugins = NonNullable<PrettierOptions['plugins']>;
 type FormatFileResult = 'changed' | 'unchanged' | 'unsupported';
 
+interface FormatFileTask {
+  file: FmtFileRequest;
+  shouldWrite: boolean;
+}
+
 const fileInfoOptions = {
   ignorePath: [],
   resolveConfig: false,
@@ -37,10 +42,10 @@ const resolveFmtParser = async (
  * Use synchronous direct I/O inside the dedicated worker to avoid libuv
  * scheduling overhead. This prioritizes throughput over crash-safe replacement.
  */
-const formatFile = async (
-  { path, options }: FmtFileRequest,
-  shouldWrite: boolean,
-): Promise<FormatFileResult> => {
+const formatFile = async ({
+  file: { path, options },
+  shouldWrite,
+}: FormatFileTask): Promise<FormatFileResult> => {
   const plugins = await getPrettierPlugins(options, path);
   const parser = await resolveFmtParser(path, options, plugins);
   if (!parser) {

packages/rstack/src/fmt/workerPool.ts

@@ -1,13 +1,17 @@
 // Derived from @prettier/cli, see THIRD_PARTY_NOTICES.md
 
 import { availableParallelism } from 'node:os';
-import WorkTank from 'worktank';
+import Tinypool from 'tinypool';
+import type { FmtFileRequest } from './types.ts';
 
 type FmtWorkerMethods = typeof import('./worker.ts');
 
 interface FmtWorkerPool {
-  formatFile: FmtWorkerMethods['formatFile'];
-  terminate: () => void;
+  formatFile: (
+    file: FmtFileRequest,
+    shouldWrite: boolean,
+  ) => ReturnType<FmtWorkerMethods['formatFile']>;
+  terminate: () => Promise<void>;
 }
 
 const getFmtWorkerCount = (fileCount: number, maxWorkers?: number): number =>
@@ -27,30 +31,27 @@ const createFmtWorkerPool = async (
   maxWorkers?: number,
 ): Promise<FmtWorkerPool> => {
   const workerCount = getFmtWorkerCount(fileCount, maxWorkers);
-  const pool = new WorkTank<FmtWorkerMethods>({
-    pool: {
-      name: 'rstack-fmt',
-      size: workerCount,
-    },
-    worker: {
-      autoInstantiate: true,
-      methods: getFmtWorkerUrl(),
-    },
+  const pool = new Tinypool({
+    filename: getFmtWorkerUrl().href,
+    name: 'initializeFmtWorker',
+    minThreads: workerCount,
+    maxThreads: workerCount,
   });
 
   try {
-    // Concurrent handshakes make WorkTank assign one task to every worker.
     await Promise.all(
-      Array.from({ length: workerCount }, () => pool.exec('initializeFmtWorker', [])),
+      Array.from({ length: workerCount }, () =>
+        pool.run(undefined, { name: 'initializeFmtWorker' }),
+      ),
     );
   } catch (error) {
-    pool.terminate();
+    await pool.destroy();
     throw error;
   }
 
   return {
-    formatFile: (file, shouldWrite) => pool.exec('formatFile', [file, shouldWrite]),
-    terminate: pool.terminate,
+    formatFile: (file, shouldWrite) => pool.run({ file, shouldWrite }, { name: 'formatFile' }),
+    terminate: () => pool.destroy(),
   };
 };
 

packages/rstack/tests/fmt/runnerWriteFailure.test.ts

@@ -11,6 +11,7 @@ rs.mock('../../src/fmt/workerPool.ts', () => ({
       formatFile: () => Promise.reject(new Error('file write failed')),
       terminate: () => {
         mocks.terminateCalls++;
+        return Promise.resolve();
       },
     }),
 }));

packages/rstack/tests/fmt/worker.test.ts

@@ -9,15 +9,15 @@ test('writes formatted files', async () => {
     const filePath = writeProjectFile(rootPath, 'example.ts', 'const value=1');
 
     await expect(
-      formatFile(
-        {
+      formatFile({
+        file: {
           path: filePath,
           options: {
             parser: 'typescript',
           },
         },
-        true,
-      ),
+        shouldWrite: true,
+      }),
     ).resolves.toBe('changed');
 
     expect(readFileSync(filePath, 'utf8')).toBe('const value = 1;\n');
@@ -30,13 +30,13 @@ test('infers the parser for an explicitly provided node_modules file', async ()
     const filePath = writeProjectFile(rootPath, 'node_modules/example/index.ts', source);
 
     await expect(
-      formatFile(
-        {
+      formatFile({
+        file: {
           path: filePath,
           options: {},
         },
-        false,
-      ),
+        shouldWrite: false,
+      }),
     ).resolves.toBe('changed');
 
     expect(readFileSync(filePath, 'utf8')).toBe(source);
@@ -48,13 +48,13 @@ test('skips unsupported files before reading them', async () => {
     const filePath = path.join(rootPath, 'missing.unknown');
 
     await expect(
-      formatFile(
-        {
+      formatFile({
+        file: {
           path: filePath,
           options: {},
         },
-        true,
-      ),
+        shouldWrite: true,
+      }),
     ).resolves.toBe('unsupported');
   });
 });