feat(fmt): resolve formatter overrides

packages/rstack/THIRD_PARTY_NOTICES.md

@@ -30,6 +30,34 @@ 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).
+
+License: MIT
+
+The MIT License (MIT)
+
+Copyright (c) 2014-present, Jon Schlinkert.
+
+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.
+
 ## Husky
 
 Portions of the Git hook installer and runtime are derived from [Husky](https://github.com/typicode/husky).

packages/rstack/package.json

@@ -65,8 +65,10 @@
     "@rstackjs/test-utils": "catalog:",
     "@rstest/adapter-rsbuild": "catalog:",
     "@rstest/adapter-rslib": "catalog:",
+    "@types/micromatch": "catalog:",
     "@types/node": "catalog:",
     "lint-staged": "catalog:",
+    "micromatch": "catalog:",
     "rslog": "catalog:",
     "typescript": "catalog:"
   },

packages/rstack/src/fmt/config.ts

@@ -1,4 +1,6 @@
-import { dirname } from 'node:path';
+import { dirname, relative } from 'node:path';
+import micromatch from 'micromatch';
+import type { Options as PrettierOptions } from 'prettier';
 import type { FmtConfig, FmtConfigDefinition, ResolvedFmtConfig } from './types.ts';
 
 type ResolveFmtConfigOptions = {
@@ -19,6 +21,47 @@ const normalizeFmtConfig = (config: FmtConfig | undefined, rootPath: string): Re
   };
 };
 
+const pathMatchesGlobs = (
+  filePath: string,
+  patterns: string | string[],
+  excludedPatterns?: string | string[],
+): boolean => {
+  const patternList = Array.isArray(patterns) ? patterns : [patterns];
+  const withSlashes = patternList.filter((pattern) => pattern.includes('/'));
+  const withoutSlashes = patternList.filter((pattern) => !pattern.includes('/'));
+
+  return (
+    micromatch.isMatch(filePath, withoutSlashes, {
+      ignore: excludedPatterns,
+      basename: true,
+      dot: true,
+    }) ||
+    micromatch.isMatch(filePath, withSlashes, {
+      ignore: excludedPatterns,
+      basename: false,
+      dot: true,
+    })
+  );
+};
+
+/** Applies matching overrides to the shared formatter options. */
+const resolveFmtOptions = (filePath: string, config: ResolvedFmtConfig): PrettierOptions => {
+  if (config.overrides.length === 0) {
+    return config.baseOptions;
+  }
+
+  const options = { ...config.baseOptions };
+  const relativeFilePath = relative(config.rootPath, filePath);
+
+  for (const override of config.overrides) {
+    if (pathMatchesGlobs(relativeFilePath, override.files, override.excludeFiles)) {
+      Object.assign(options, override.options);
+    }
+  }
+
+  return options;
+};
+
 /** Resolves a formatter config definition and its project root. */
 const resolveFmtConfig = async ({
   definition,
@@ -31,4 +74,4 @@ const resolveFmtConfig = async ({
   return normalizeFmtConfig(config, rootPath);
 };
 
-export { normalizeFmtConfig, resolveFmtConfig };
+export { normalizeFmtConfig, resolveFmtConfig, resolveFmtOptions };

pnpm-workspace.yaml

@@ -28,6 +28,7 @@ catalog:
   '@testing-library/dom': '^10.4.1'
   '@testing-library/jest-dom': '^7.0.0'
   '@testing-library/react': '^16.3.2'
+  '@types/micromatch': '^4.0.10'
   '@types/node': '^24.13.3'
   '@types/react': '^19.2.17'
   '@types/react-dom': '^19.2.3'
@@ -36,6 +37,7 @@ catalog:
   'happy-dom': '^20.11.1'
   'heading-case': '^1.1.4'
   'lint-staged': '^17.2.0'
+  'micromatch': '4.0.8'
   prettier: '3.9.6'
   'prettier-plugin-packagejson': '^3.0.2'
   'react': '^19.2.8'