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
@@ -31,12 +31,15 @@ const restrictNamedDeclarations = {
 
 const vitestFiles = [
   'packages/eslint-plugin-internal/tests/**/*.test.{ts,tsx,cts,mts}',
-  'packages/typescript-eslint/tests/**/*.test.{ts,tsx,cts,mts}',
-  'packages/visitor-keys/tests/**/*.test.{ts,tsx,cts,mts}',
+  'packages/integration-tests/tests/**/*.test.{ts,tsx,cts,mts},',
+  'packages/integration-tests/tools/integration-test-base.ts',
+  'packages/integration-tests/tools/pack-packages.ts',
   'packages/parser/tests/lib/**/*.test.{ts,tsx,cts,mts}',
   'packages/parser/tests/test-utils/**/*.{ts,tsx,cts,mts}',
-  'packages/utils/tests/**/*.test?(-d).{ts,tsx,cts,mts}',
   'packages/type-utils/tests/**/*.test.{ts,tsx,cts,mts}',
+  'packages/typescript-eslint/tests/**/*.test.{ts,tsx,cts,mts}',
+  'packages/utils/tests/**/*.test?(-d).{ts,tsx,cts,mts}',
+  'packages/visitor-keys/tests/**/*.test.{ts,tsx,cts,mts}',
 ];
 
 export default tseslint.config(
@@ -390,8 +393,6 @@ export default tseslint.config(
     files: [
       'packages/*/tests/**/*.test.{ts,tsx,cts,mts}',
       'packages/*/tests/**/test.{ts,tsx,cts,mts}',
-      'packages/integration-tests/tools/integration-test-base.ts',
-      'packages/integration-tests/tools/pack-packages.ts',
     ],
     ignores: vitestFiles,
     rules: {

diff --git a/knip.ts b/knip.ts
@@ -59,7 +59,7 @@ export default {
       ignore: ['tests/fixtures/**'],
     },
     'packages/integration-tests': {
-      ignore: ['fixtures/**', 'typings/global.d.ts'],
+      ignore: ['fixtures/**'],
     },
     'packages/parser': {
       ignore: ['tests/fixtures/**'],

diff --git a/packages/integration-tests/fixtures/flat-config-types-@types__eslint-v8/eslint.config.js b/packages/integration-tests/fixtures/flat-config-types-@types__eslint-v8/eslint.config.js
@@ -3,8 +3,8 @@
 import { FlatCompat } from '@eslint/eslintrc';
 import eslint from '@eslint/js';
 import stylisticPlugin from '@stylistic/eslint-plugin';
+import vitestPlugin from '@vitest/eslint-plugin';
 import deprecationPlugin from 'eslint-plugin-deprecation';
-import jestPlugin from 'eslint-plugin-jest';
 import tseslint from 'typescript-eslint';
 
 import __dirname from './dirname.cjs';
@@ -26,7 +26,7 @@ export default tseslint.config(
     plugins: {
       ['@typescript-eslint']: tseslint.plugin,
       ['deprecation']: deprecationPlugin,
-      ['jest']: jestPlugin,
+      ['vitest']: vitestPlugin,
     },
   },
   eslint.configs.recommended,
@@ -42,23 +42,23 @@ function _otherCases() {
       ['@stylistic']: stylisticPlugin,
       ['@typescript-eslint']: tseslint.plugin,
       ['deprecation']: deprecationPlugin,
-      ['jest']: jestPlugin,
+      ['vitest']: vitestPlugin,
     },
   });
   tseslint.config(
     eslint.configs.recommended,
     ...tseslint.configs.recommended,
     stylisticPlugin.configs['recommended-flat'],
-    jestPlugin.configs['flat/recommended'],
+    vitestPlugin.configs.recommended,
   );
   tseslint.config(
     // @ts-expect-error
     compat.config(deprecationPlugin.configs.recommended),
-    ...compat.config(jestPlugin.configs.recommended),
+    vitestPlugin.configs.recommended,
   );
   tseslint.config(
     // @ts-expect-error
     deprecationPlugin.configs.recommended,
-    jestPlugin.configs.recommended,
+    vitestPlugin.configs.recommended,
   );
 }
diff --git a/packages/integration-tests/fixtures/flat-config-types-@types__eslint-v8/package.json b/packages/integration-tests/fixtures/flat-config-types-@types__eslint-v8/package.json
@@ -7,6 +7,6 @@
     "eslint": "9.9.1",
     "@stylistic/eslint-plugin": "2.3.0",
     "eslint-plugin-deprecation": "latest",
-    "eslint-plugin-jest": "latest"
+    "@vitest/eslint-plugin": "latest"
   }
 }
diff --git a/packages/integration-tests/fixtures/flat-config-types-@types__eslint-v9/eslint.config.js b/packages/integration-tests/fixtures/flat-config-types-@types__eslint-v9/eslint.config.js
@@ -3,8 +3,8 @@
 import { FlatCompat } from '@eslint/eslintrc';
 import eslint from '@eslint/js';
 import stylisticPlugin from '@stylistic/eslint-plugin';
+import vitestPlugin from '@vitest/eslint-plugin';
 import deprecationPlugin from 'eslint-plugin-deprecation';
-import jestPlugin from 'eslint-plugin-jest';
 import tseslint from 'typescript-eslint';
 
 import __dirname from './dirname.cjs';
@@ -26,7 +26,7 @@ export default tseslint.config(
     plugins: {
       ['@typescript-eslint']: tseslint.plugin,
       ['deprecation']: deprecationPlugin,
-      ['jest']: jestPlugin,
+      ['vitest']: vitestPlugin,
     },
   },
   eslint.configs.recommended,
@@ -42,23 +42,23 @@ function _otherCases() {
       ['@stylistic']: stylisticPlugin,
       ['@typescript-eslint']: tseslint.plugin,
       ['deprecation']: deprecationPlugin,
-      ['jest']: jestPlugin,
+      ['vitest']: vitestPlugin,
     },
   });
   tseslint.config(
     eslint.configs.recommended,
     ...tseslint.configs.recommended,
     stylisticPlugin.configs['recommended-flat'],
-    jestPlugin.configs['flat/recommended'],
+    vitestPlugin.configs.recommended,
   );
   tseslint.config(
     // @ts-expect-error
     compat.config(deprecationPlugin.configs.recommended),
-    ...compat.config(jestPlugin.configs.recommended),
+    vitestPlugin.configs.recommended,
   );
   tseslint.config(
     // @ts-expect-error
     deprecationPlugin.configs.recommended,
-    jestPlugin.configs.recommended,
+    vitestPlugin.configs.recommended,
   );
 }
diff --git a/packages/integration-tests/fixtures/flat-config-types-@types__eslint-v9/package.json b/packages/integration-tests/fixtures/flat-config-types-@types__eslint-v9/package.json
@@ -7,6 +7,6 @@
     "eslint": "latest",
     "@stylistic/eslint-plugin": "latest",
     "eslint-plugin-deprecation": "latest",
-    "eslint-plugin-jest": "latest"
+    "@vitest/eslint-plugin": "latest"
   }
 }
diff --git a/packages/integration-tests/jest.config.js b/packages/integration-tests/jest.config.js
diff --git a/packages/integration-tests/package.json b/packages/integration-tests/package.json
@@ -14,12 +14,11 @@
   "scripts": {
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "lint": "npx nx lint",
-    "test": "jest --no-coverage",
+    "test": "vitest --run --config=$INIT_CWD/vitest.config.mts",
     "check-types": "npx nx typecheck"
   },
   "devDependencies": {
-    "@jest/types": "29.6.3",
-    "jest": "29.7.0",
-    "tsx": "*"
+    "@vitest/coverage-v8": "^3.1.1",
+    "vitest": "^3.1.1"
   }
 }
diff --git a/packages/integration-tests/project.json b/packages/integration-tests/project.json
@@ -1,12 +1,17 @@
 {
   "name": "integration-tests",
   "$schema": "../../node_modules/nx/schemas/project-schema.json",
-  "type": "library",
+  "projectType": "library",
+  "root": "packages/integration-tests",
+  "sourceRoot": "packages/integration-tests/tools",
   "implicitDependencies": ["typescript-eslint"],
   "targets": {
     "lint": {
       "executor": "@nx/eslint:lint",
       "outputs": ["{options.outputFile}"]
+    },
+    "test": {
+      "executor": "@nx/vite:test"
     }
   }
 }
diff --git a/packages/integration-tests/tests/__snapshots__/eslint-v8.test.ts.snap b/packages/integration-tests/tests/__snapshots__/eslint-v8.test.ts.snap
@@ -1,6 +1,6 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`eslint-v8 eslint should work successfully 1`] = `
+exports[`eslint-v8 > eslint > should work successfully 1`] = `
 [
   {
     "errorCount": 1,

diff --git a/...es/integration-tests/tests/__snapshots__/flat-config-types-@types__eslint-v8.test.ts.snap b/...es/integration-tests/tests/__snapshots__/flat-config-types-@types__eslint-v8.test.ts.snap
@@ -1,6 +1,6 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`flat-config-types-@types__eslint-v8 eslint should work successfully 1`] = `
+exports[`flat-config-types-@types__eslint-v8 > eslint > should work successfully 1`] = `
 [
   {
     "errorCount": 3,
@@ -48,8 +48,8 @@ exports[`flat-config-types-@types__eslint-v8 eslint should work successfully 1`]
 import { FlatCompat } from '@eslint/eslintrc'
 import eslint from '@eslint/js'
 import stylisticPlugin from '@stylistic/eslint-plugin'
+import vitestPlugin from '@vitest/eslint-plugin'
 import deprecationPlugin from 'eslint-plugin-deprecation'
-import jestPlugin from 'eslint-plugin-jest'
 import tseslint from 'typescript-eslint'
 
 import __dirname from './dirname.cjs'
@@ -71,7 +71,7 @@ export default tseslint.config(
     plugins: {
       ['@typescript-eslint']: tseslint.plugin,
       ['deprecation']: deprecationPlugin,
-      ['jest']: jestPlugin,
+      ['vitest']: vitestPlugin,
     },
   },
   eslint.configs.recommended,
@@ -87,24 +87,24 @@ function _otherCases() {
       ['@stylistic']: stylisticPlugin,
       ['@typescript-eslint']: tseslint.plugin,
       ['deprecation']: deprecationPlugin,
-      ['jest']: jestPlugin,
+      ['vitest']: vitestPlugin,
     },
   })
   tseslint.config(
     eslint.configs.recommended,
     ...tseslint.configs.recommended,
     stylisticPlugin.configs['recommended-flat'],
-    jestPlugin.configs['flat/recommended'],
+    vitestPlugin.configs.recommended,
   )
   tseslint.config(
     // @ts-expect-error
     compat.config(deprecationPlugin.configs.recommended),
-    ...compat.config(jestPlugin.configs.recommended),
+    vitestPlugin.configs.recommended,
   )
   tseslint.config(
     // @ts-expect-error
     deprecationPlugin.configs.recommended,
-    jestPlugin.configs.recommended,
+    vitestPlugin.configs.recommended,
   )
 }
 ",

diff --git a/...es/integration-tests/tests/__snapshots__/flat-config-types-@types__eslint-v9.test.ts.snap b/...es/integration-tests/tests/__snapshots__/flat-config-types-@types__eslint-v9.test.ts.snap
@@ -1,6 +1,6 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`flat-config-types-@types__eslint-v9 eslint should work successfully 1`] = `
+exports[`flat-config-types-@types__eslint-v9 > eslint > should work successfully 1`] = `
 [
   {
     "errorCount": 3,
@@ -48,8 +48,8 @@ exports[`flat-config-types-@types__eslint-v9 eslint should work successfully 1`]
 import { FlatCompat } from '@eslint/eslintrc'
 import eslint from '@eslint/js'
 import stylisticPlugin from '@stylistic/eslint-plugin'
+import vitestPlugin from '@vitest/eslint-plugin'
 import deprecationPlugin from 'eslint-plugin-deprecation'
-import jestPlugin from 'eslint-plugin-jest'
 import tseslint from 'typescript-eslint'
 
 import __dirname from './dirname.cjs'
@@ -71,7 +71,7 @@ export default tseslint.config(
     plugins: {
       ['@typescript-eslint']: tseslint.plugin,
       ['deprecation']: deprecationPlugin,
-      ['jest']: jestPlugin,
+      ['vitest']: vitestPlugin,
     },
   },
   eslint.configs.recommended,
@@ -87,24 +87,24 @@ function _otherCases() {
       ['@stylistic']: stylisticPlugin,
       ['@typescript-eslint']: tseslint.plugin,
       ['deprecation']: deprecationPlugin,
-      ['jest']: jestPlugin,
+      ['vitest']: vitestPlugin,
     },
   })
   tseslint.config(
     eslint.configs.recommended,
     ...tseslint.configs.recommended,
     stylisticPlugin.configs['recommended-flat'],
-    jestPlugin.configs['flat/recommended'],
+    vitestPlugin.configs.recommended,
   )
   tseslint.config(
     // @ts-expect-error
     compat.config(deprecationPlugin.configs.recommended),
-    ...compat.config(jestPlugin.configs.recommended),
+    vitestPlugin.configs.recommended,
   )
   tseslint.config(
     // @ts-expect-error
     deprecationPlugin.configs.recommended,
-    jestPlugin.configs.recommended,
+    vitestPlugin.configs.recommended,
   )
 }
 ",

diff --git a/packages/integration-tests/tests/__snapshots__/markdown.test.ts.snap b/packages/integration-tests/tests/__snapshots__/markdown.test.ts.snap
@@ -1,6 +1,6 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`markdown eslint should work successfully 1`] = `
+exports[`markdown > eslint > should work successfully 1`] = `
 [
   {
     "errorCount": 10,

diff --git a/...s/integration-tests/tests/__snapshots__/recommended-does-not-require-program.test.ts.snap b/...s/integration-tests/tests/__snapshots__/recommended-does-not-require-program.test.ts.snap
@@ -1,6 +1,6 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`recommended-does-not-require-program eslint should work successfully 1`] = `
+exports[`recommended-does-not-require-program > eslint > should work successfully 1`] = `
 [
   {
     "errorCount": 1,

diff --git a/packages/integration-tests/tests/__snapshots__/vue-jsx.test.ts.snap b/packages/integration-tests/tests/__snapshots__/vue-jsx.test.ts.snap
@@ -1,6 +1,6 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`vue-jsx eslint should work successfully 1`] = `
+exports[`vue-jsx > eslint > should work successfully 1`] = `
 [
   {
     "errorCount": 1,

diff --git a/packages/integration-tests/tests/__snapshots__/vue-sfc.test.ts.snap b/packages/integration-tests/tests/__snapshots__/vue-sfc.test.ts.snap
@@ -1,6 +1,6 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`vue-sfc eslint should work successfully 1`] = `
+exports[`vue-sfc > eslint > should work successfully 1`] = `
 [
   {
     "errorCount": 1,

diff --git a/packages/integration-tests/tools/integration-test-base.ts b/packages/integration-tests/tools/integration-test-base.ts
@@ -1,10 +1,10 @@
 import * as fs from 'node:fs/promises';
 import * as path from 'node:path';
 
-import { execFile, FIXTURES_DESTINATION_DIR } from './pack-packages';
+import { execFile, FIXTURES_DESTINATION_DIR } from './pack-packages.js';
 
-// make sure that jest doesn't timeout the test
-jest.setTimeout(60_000);
+// make sure that vitest doesn't timeout the test
+vi.setConfig({ testTimeout: 60_000 });
 
 function integrationTest(
   testName: string,