typescript-eslint · JoshuaKGoldberg · Apr 14, 2025 · Feb 4, 2025 · Feb 4, 2025 · Feb 4, 2025
diff --git a/eslint.config.mjs b/eslint.config.mjs
@@ -30,6 +30,8 @@ const restrictNamedDeclarations = {
 };
 
 const vitestFiles = [
+  'packages/ast-spec/tests/**/*.test?(-d).{ts,tsx,cts,mts}',
+  'packages/ast-spec/tests/util/setupVitest.mts',
   'packages/eslint-plugin-internal/tests/**/*.test.{ts,tsx,cts,mts}',
   'packages/integration-tests/tests/**/*.test.{ts,tsx,cts,mts},',
   'packages/integration-tests/tools/integration-test-base.ts',

diff --git a/knip.ts b/knip.ts
@@ -44,13 +44,21 @@ export default {
     },
     'packages/ast-spec': {
       ignore: [
-        'src/**/fixtures/**',
-        'tests/*.type-test.ts',
         // @typescript-eslint/typescript-estree is not listed in dependencies to avoid circular dependency errors
         // You can check a more detailed explanation in this file
         'tests/util/parsers/typescript-estree-import.ts',
         'typings/global.d.ts',
       ],
+
+      project: ['src/**/*.ts', 'tests/util/**/*.ts', '!src/**/fixtures/**'],
+
+      vitest: {
+        config: ['vitest.config.mts'],
+        entry: [
+          'tests/**/*.{bench,test,test-d}.?(c|m)ts?(x)',
+          'tests/util/setupVitest.mts',
+        ],
+      },
     },
     'packages/eslint-plugin': {
       ignore: [

diff --git a/packages/ast-spec/jest.config.js b/packages/ast-spec/jest.config.js
diff --git a/packages/ast-spec/package.json b/packages/ast-spec/package.json
@@ -33,11 +33,11 @@
   "scripts": {
     "build": "tsc -b tsconfig.build.json && api-extractor run --local",
     "clean": "tsc -b tsconfig.build.json --clean",
-    "postclean": "rimraf dist && rimraf coverage",
+    "postclean": "rimraf dist/ coverage/",
     "clean-fixtures": "rimraf -g \"./src/**/fixtures/**/snapshots\"",
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "lint": "npx nx lint",
-    "test": "jest",
+    "test": "vitest --run --config=$INIT_CWD/vitest.config.mts",
     "check-types": "npx nx typecheck"
   },
   "funding": {
@@ -48,17 +48,15 @@
     "@babel/code-frame": "*",
     "@babel/core": "*",
     "@babel/eslint-parser": "*",
-    "@jest/types": "29.6.3",
     "@microsoft/api-extractor": "^7.47.11",
     "@typescript-eslint/typescript-estree": "workspace:*",
+    "@vitest/coverage-v8": "^3.1.1",
     "glob": "*",
-    "jest": "29.7.0",
     "jest-diff": "^29.7.0",
-    "jest-specific-snapshot": "^8.0.0",
-    "make-dir": "*",
     "prettier": "^3.2.5",
     "pretty-format": "*",
     "rimraf": "*",
-    "typescript": "*"
+    "typescript": "*",
+    "vitest": "^3.1.1"
   }
 }
diff --git a/packages/ast-spec/project.json b/packages/ast-spec/project.json
@@ -14,6 +14,7 @@
       "outputs": ["{options.outputFile}"]
     },
     "test": {
+      "executor": "@nx/vite:test",
       "dependsOn": ["typecheck"]
     },
     "typecheck": {

diff --git a/...ion/ClassDeclaration/fixtures/_error_/export-missing-name/snapshots/1-TSESTree-Error.shot b/...ion/ClassDeclaration/fixtures/_error_/export-missing-name/snapshots/1-TSESTree-Error.shot
diff --git a/...ration/ClassDeclaration/fixtures/_error_/export-missing-name/snapshots/2-Babel-Error.shot b/...ration/ClassDeclaration/fixtures/_error_/export-missing-name/snapshots/2-Babel-Error.shot
diff --git a/...on/ClassDeclaration/fixtures/_error_/export-missing-name/snapshots/3-Alignment-Error.shot b/...on/ClassDeclaration/fixtures/_error_/export-missing-name/snapshots/3-Alignment-Error.shot
diff --git a/...assDeclaration/fixtures/_error_/implements-non-identifier/snapshots/1-TSESTree-Error.shot b/...assDeclaration/fixtures/_error_/implements-non-identifier/snapshots/1-TSESTree-Error.shot
diff --git a/.../ClassDeclaration/fixtures/_error_/implements-non-identifier/snapshots/2-Babel-Error.shot b/.../ClassDeclaration/fixtures/_error_/implements-non-identifier/snapshots/2-Babel-Error.shot
diff --git a/...ssDeclaration/fixtures/_error_/implements-non-identifier/snapshots/3-Alignment-Error.shot b/...ssDeclaration/fixtures/_error_/implements-non-identifier/snapshots/3-Alignment-Error.shot
diff --git a/...eclaration/ClassDeclaration/fixtures/_error_/missing-body/snapshots/1-TSESTree-Error.shot b/...eclaration/ClassDeclaration/fixtures/_error_/missing-body/snapshots/1-TSESTree-Error.shot
diff --git a/...c/declaration/ClassDeclaration/fixtures/_error_/missing-body/snapshots/2-Babel-Error.shot b/...c/declaration/ClassDeclaration/fixtures/_error_/missing-body/snapshots/2-Babel-Error.shot
diff --git a/...claration/ClassDeclaration/fixtures/_error_/missing-body/snapshots/3-Alignment-Error.shot b/...claration/ClassDeclaration/fixtures/_error_/missing-body/snapshots/3-Alignment-Error.shot
diff --git a/...ssDeclaration/fixtures/_error_/missing-extends-type-param/snapshots/1-TSESTree-Error.shot b/...ssDeclaration/fixtures/_error_/missing-extends-type-param/snapshots/1-TSESTree-Error.shot
diff --git a/...ClassDeclaration/fixtures/_error_/missing-extends-type-param/snapshots/2-Babel-Error.shot b/...ClassDeclaration/fixtures/_error_/missing-extends-type-param/snapshots/2-Babel-Error.shot
diff --git a/...sDeclaration/fixtures/_error_/missing-extends-type-param/snapshots/3-Alignment-Error.shot b/...sDeclaration/fixtures/_error_/missing-extends-type-param/snapshots/3-Alignment-Error.shot
diff --git a/...tion/ClassDeclaration/fixtures/_error_/missing-type-param/snapshots/1-TSESTree-Error.shot b/...tion/ClassDeclaration/fixtures/_error_/missing-type-param/snapshots/1-TSESTree-Error.shot
diff --git a/...aration/ClassDeclaration/fixtures/_error_/missing-type-param/snapshots/2-Babel-Error.shot b/...aration/ClassDeclaration/fixtures/_error_/missing-type-param/snapshots/2-Babel-Error.shot
diff --git a/...ion/ClassDeclaration/fixtures/_error_/missing-type-param/snapshots/3-Alignment-Error.shot b/...ion/ClassDeclaration/fixtures/_error_/missing-type-param/snapshots/3-Alignment-Error.shot
diff --git a/...ion/ClassDeclaration/fixtures/_error_/non-identifier-name/snapshots/1-TSESTree-Error.shot b/...ion/ClassDeclaration/fixtures/_error_/non-identifier-name/snapshots/1-TSESTree-Error.shot
diff --git a/...ration/ClassDeclaration/fixtures/_error_/non-identifier-name/snapshots/2-Babel-Error.shot b/...ration/ClassDeclaration/fixtures/_error_/non-identifier-name/snapshots/2-Babel-Error.shot
diff --git a/...on/ClassDeclaration/fixtures/_error_/non-identifier-name/snapshots/3-Alignment-Error.shot b/...on/ClassDeclaration/fixtures/_error_/non-identifier-name/snapshots/3-Alignment-Error.shot
diff --git a/...assDeclaration/fixtures/_error_/non-identifier-type-param/snapshots/1-TSESTree-Error.shot b/...assDeclaration/fixtures/_error_/non-identifier-type-param/snapshots/1-TSESTree-Error.shot
diff --git a/.../ClassDeclaration/fixtures/_error_/non-identifier-type-param/snapshots/2-Babel-Error.shot b/.../ClassDeclaration/fixtures/_error_/non-identifier-type-param/snapshots/2-Babel-Error.shot
diff --git a/...ssDeclaration/fixtures/_error_/non-identifier-type-param/snapshots/3-Alignment-Error.shot b/...ssDeclaration/fixtures/_error_/non-identifier-type-param/snapshots/3-Alignment-Error.shot
diff --git a/...ast-spec/src/declaration/ClassDeclaration/fixtures/abstract/snapshots/1-TSESTree-AST.shot b/...ast-spec/src/declaration/ClassDeclaration/fixtures/abstract/snapshots/1-TSESTree-AST.shot
diff --git a/...-spec/src/declaration/ClassDeclaration/fixtures/abstract/snapshots/2-TSESTree-Tokens.shot b/...-spec/src/declaration/ClassDeclaration/fixtures/abstract/snapshots/2-TSESTree-Tokens.shot
diff --git a/...es/ast-spec/src/declaration/ClassDeclaration/fixtures/abstract/snapshots/3-Babel-AST.shot b/...es/ast-spec/src/declaration/ClassDeclaration/fixtures/abstract/snapshots/3-Babel-AST.shot
diff --git a/...ast-spec/src/declaration/ClassDeclaration/fixtures/abstract/snapshots/4-Babel-Tokens.shot b/...ast-spec/src/declaration/ClassDeclaration/fixtures/abstract/snapshots/4-Babel-Tokens.shot
diff --git a/...pec/src/declaration/ClassDeclaration/fixtures/abstract/snapshots/5-AST-Alignment-AST.shot b/...pec/src/declaration/ClassDeclaration/fixtures/abstract/snapshots/5-AST-Alignment-AST.shot
diff --git a/.../src/declaration/ClassDeclaration/fixtures/abstract/snapshots/6-AST-Alignment-Tokens.shot b/.../src/declaration/ClassDeclaration/fixtures/abstract/snapshots/6-AST-Alignment-Tokens.shot
diff --git a/.../ast-spec/src/declaration/ClassDeclaration/fixtures/declare/snapshots/1-TSESTree-AST.shot b/.../ast-spec/src/declaration/ClassDeclaration/fixtures/declare/snapshots/1-TSESTree-AST.shot
diff --git a/...t-spec/src/declaration/ClassDeclaration/fixtures/declare/snapshots/2-TSESTree-Tokens.shot b/...t-spec/src/declaration/ClassDeclaration/fixtures/declare/snapshots/2-TSESTree-Tokens.shot
diff --git a/...ges/ast-spec/src/declaration/ClassDeclaration/fixtures/declare/snapshots/3-Babel-AST.shot b/...ges/ast-spec/src/declaration/ClassDeclaration/fixtures/declare/snapshots/3-Babel-AST.shot