feat: rewrite, speed up by using oxc-resolver under the hood

Author: JounQin

package.json

@@ -10,24 +10,20 @@
   ],
   "funding": "https://opencollective.com/unts/projects/eslint-import-resolver-ts",
   "license": "ISC",
-  "packageManager": "yarn@4.0.2",
+  "packageManager": "yarn@4.7.0",
   "engines": {
-    "node": "^14.18.0 || >=16.0.0"
+    "node": "^16.17.0 || >=18.6.0"
   },
   "main": "lib/index.cjs",
   "module": "lib/index.js",
   "exports": {
     ".": {
       "types": "./lib/index.d.ts",
-      "es2020": "./lib/index.es2020.mjs",
-      "fesm2020": "./lib/index.es2020.mjs",
       "import": "./lib/index.js",
       "require": "./lib/index.cjs"
     },
     "./package.json": "./package.json"
   },
-  "es2020": "lib/index.es2020.mjs",
-  "fesm2020": "lib/index.es2020.mjs",
   "types": "lib/index.d.ts",
   "files": [
     "lib",
@@ -42,15 +38,15 @@
     "plugin"
   ],
   "scripts": {
-    "build": "run-p 'build:*'",
+    "build": "run-p -c 'build:*'",
     "build:r": "r -f cjs,es2020",
     "build:ts": "tsc -b",
-    "lint": "run-p 'lint:*'",
+    "lint": "run-p -c 'lint:*'",
     "lint:es": "eslint src --cache -f friendly",
     "lint:tsc": "tsc --noEmit",
-    "prepare": "simple-git-hooks",
+    "prepare": "patch-package && simple-git-hooks",
     "release": "changeset publish",
-    "test": "run-p 'test:*'",
+    "test": "run-p -c 'test:*'",
     "test:dotInclude": "eslint --ext ts,tsx tests/dotInclude --ignore-pattern \"!.dot\"",
     "test:dotPaths": "eslint --ext ts,tsx tests/dotPaths --ignore-pattern \"!.dot\"",
     "test:dotProject": "eslint --ext ts,tsx tests/dotProject --ignore-pattern \"!.dot\"",
@@ -80,11 +76,10 @@
     }
   },
   "dependencies": {
-    "@nolyfill/is-core-module": "1.0.39",
     "debug": "^4.3.7",
-    "enhanced-resolve": "^5.15.0",
     "get-tsconfig": "^4.10.0",
     "is-bun-module": "^1.0.2",
+    "oxc-resolver": "^5.0.0",
     "stable-hash": "^0.0.4",
     "tinyglobby": "^0.2.12"
   },
@@ -99,6 +94,7 @@
     "@types/debug": "^4.1.12",
     "@types/node": "^18.19.78",
     "@types/unist": "^2.0.11",
+    "@unts/patch-package": "^8.1.1",
     "cross-env": "^7.0.3",
     "dummy.js": "link:dummy.js",
     "eslint": "^8.57.1",

patches/@1stg+eslint-config+7.0.1.patch

@@ -0,0 +1,13 @@
+diff --git a/node_modules/@1stg/eslint-config/overrides.js b/node_modules/@1stg/eslint-config/overrides.js
+index 3c54ff2..d8aa880 100644
+--- a/node_modules/@1stg/eslint-config/overrides.js
++++ b/node_modules/@1stg/eslint-config/overrides.js
+@@ -88,7 +88,7 @@ const resolveSettings = {
+   'import/resolver': {
+     typescript: {
+       alwaysTryTypes: true,
+-      project,
++      tsconfig: { configFile: project },
+     },
+   },
+ }

patches/eslint-plugin-import-x+4.5.0.patch

@@ -0,0 +1,10 @@
+diff --git a/node_modules/eslint-plugin-import-x/lib/index.d.ts b/node_modules/eslint-plugin-import-x/lib/index.d.ts
+index cd65cba..cebba7a 100644
+--- a/node_modules/eslint-plugin-import-x/lib/index.d.ts
++++ b/node_modules/eslint-plugin-import-x/lib/index.d.ts
+@@ -410,4 +410,5 @@ declare const _default: {
+     };
+     importXResolverCompat: typeof importXResolverCompat;
+ };
++export type * from './types';
+ export = _default;

src/.eslintrc.cjs

@@ -1,3 +1,3 @@
 module.exports = {
-  extends: require.resolve('@1stg/eslint-config'),
+  extends: '@1stg',
 }

src/constants.ts

@@ -0,0 +1,75 @@
+export const defaultConditionNames = [
+  'types',
+  'import',
+
+  // APF: https://angular.io/guide/angular-package-format
+  'esm2020',
+  'es2020',
+  'es2015',
+
+  'require',
+  'node',
+  'node-addons',
+  'browser',
+  'default',
+]
+
+/**
+ * `.mts`, `.cts`, `.d.mts`, `.d.cts`, `.mjs`, `.cjs` are not included because `.cjs` and `.mjs` must be used explicitly
+ */
+export const defaultExtensions = [
+  '.ts',
+  '.tsx',
+  '.d.ts',
+  '.js',
+  '.jsx',
+  '.json',
+  '.node',
+]
+
+export const defaultExtensionAlias = {
+  '.js': [
+    '.ts',
+    // `.tsx` can also be compiled as `.js`
+    '.tsx',
+    '.d.ts',
+    '.js',
+  ],
+  '.jsx': ['.tsx', '.d.ts', '.jsx'],
+  '.cjs': ['.cts', '.d.cts', '.cjs'],
+  '.mjs': ['.mts', '.d.mts', '.mjs'],
+}
+
+export const defaultMainFields = [
+  'types',
+  'typings',
+
+  // APF: https://angular.io/guide/angular-package-format
+  'fesm2020',
+  'fesm2015',
+  'esm2020',
+  'es2020',
+
+  'module',
+  'jsnext:main',
+
+  'main',
+]
+
+export const JS_EXT_PATTERN = /\.(?:[cm]js|jsx?)$/
+
+export const IMPORT_RESOLVER_NAME = 'eslint-import-resolver-typescript'
+
+export const interfaceVersion = 2
+
+export const DEFAULT_TSCONFIG = 'tsconfig.json'
+
+export const DEFAULT_JSCONFIG = 'jsconfig.json'
+
+export const DEFAULT_CONFIGS = [DEFAULT_TSCONFIG, DEFAULT_JSCONFIG]
+
+export const DEFAULT_TRY_PATHS = ['', ...DEFAULT_CONFIGS]
+
+export const MATCH_ALL = '**'
+
+export const DEFAULT_IGNORE = [MATCH_ALL, 'node_modules', MATCH_ALL].join('/')

src/helpers.ts

@@ -0,0 +1,68 @@
+import fs from 'node:fs'
+import path from 'node:path'
+
+/**
+ * For a scoped package, we must look in `@types/foo__bar` instead of `@types/@foo/bar`.
+ */
+export function mangleScopedPackage(moduleName: string) {
+  if (moduleName.startsWith('@')) {
+    const replaceSlash = moduleName.replace('/', '__')
+    if (replaceSlash !== moduleName) {
+      return replaceSlash.slice(1) // Take off the "@"
+    }
+  }
+  return moduleName
+}
+
+/** Remove any trailing querystring from module id. */
+export function removeQuerystring(id: string) {
+  const querystringIndex = id.lastIndexOf('?')
+  if (querystringIndex >= 0) {
+    return id.slice(0, querystringIndex)
+  }
+  return id
+}
+
+export const tryFile = (
+  filename?: string[] | string,
+  includeDir = false,
+  base = process.cwd(),
+): string => {
+  if (typeof filename === 'string') {
+    const filepath = path.resolve(base, filename)
+    return fs.existsSync(filepath) &&
+      (includeDir || fs.statSync(filepath).isFile())
+      ? filepath
+      : ''
+  }
+
+  for (const file of filename ?? []) {
+    const filepath = tryFile(file, includeDir, base)
+    if (filepath) {
+      return filepath
+    }
+  }
+
+  return ''
+}
+
+const computeAffinity = (projectDir: string, targetDir: string): number => {
+  const a = projectDir.split(path.sep)
+  const b = targetDir.split(path.sep)
+  let lca = 0
+  while (lca < a.length && lca < b.length && a[lca] === b[lca]) {
+    lca++
+  }
+  return a.length - lca + (b.length - lca)
+}
+
+export const sortProjectsByAffinity = (projects: string[], file: string) => {
+  const fileDir = path.dirname(file)
+  return projects
+    .map(project => ({
+      project,
+      affinity: computeAffinity(path.dirname(project), fileDir),
+    }))
+    .sort((a, b) => a.affinity - b.affinity)
+    .map(item => item.project)
+}