chore(types): migrate from jest to vitest (#10776)

* Install `vitest`

* Rename `jest.config.js` to `vitest.config.mts`

* chore(types): migrate to `vitest`

* Fix Vitest config

* Include `vitest.config.mts` in `tsconfig.spec.json`

* Explicitly enable `resolveJsonModule`

* Use `.replace` instead of `.split`

* Type check `vitest.config.mts` files using project references.

* Fix Vitest config

* Update `vitest` to version 3.1.1

* Update `@vitest/eslint-plugin` to version 1.1.39

* Fix `knip`

* Update `vite` to version 6.2.5

* Update `vite` to version 6.2.6

* Update `@vitest/eslint-plugin` to version 1.1.40

* Update `@vitest/eslint-plugin` to version 1.1.42

* Enable the new `vitest/prefer-describe-function-title` rule

* Use `vitestPlugin.configs.env`

* Try disabling remote cache

* Try disabling remote cache

* Try disabling remote cache

* Run `ast-spec:typecheck` during `postinstall` script

* Update `typecheck` output path in `nx.json`

* Fix `vitest` coverage output when run with `nx`

---------

Co-authored-by: Josh Goldberg <[email protected]>

Author: aryaemami59

Diff for: eslint.config.mjs

@@ -44,6 +44,7 @@ const vitestFiles = [
   'packages/scope-manager/tests/**/*.test.{ts,tsx,cts,mts}',
   'packages/scope-manager/tests/test-utils/serializers/index.ts',
   'packages/type-utils/tests/**/*.test.{ts,tsx,cts,mts}',
+  'packages/types/tests/**/*.test.{ts,tsx,cts,mts}',
   'packages/typescript-eslint/tests/**/*.test.{ts,tsx,cts,mts}',
   'packages/typescript-estree/tests/**/*.test.{ts,tsx,cts,mts}',
   'packages/utils/tests/**/*.test?(-d).{ts,tsx,cts,mts}',

Diff for: packages/types/package.json

@@ -44,6 +44,7 @@
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "generate-lib": "npx nx run scope-manager:generate-lib",
     "lint": "npx nx lint",
+    "test": "vitest --run --config=$INIT_CWD/vitest.config.mts",
     "check-types": "npx nx typecheck"
   },
   "nx": {
@@ -66,10 +67,12 @@
     }
   },
   "devDependencies": {
+    "@vitest/coverage-v8": "^3.1.1",
     "prettier": "^3.2.5",
     "rimraf": "*",
     "tsx": "*",
-    "typescript": "*"
+    "typescript": "*",
+    "vitest": "^3.1.1"
   },
   "funding": {
     "type": "opencollective",

Diff for: packages/types/project.json

@@ -1,7 +1,9 @@
 {
   "name": "types",
   "$schema": "../../node_modules/nx/schemas/project-schema.json",
-  "type": "library",
+  "projectType": "library",
+  "root": "packages/types",
+  "sourceRoot": "packages/types/src",
   "implicitDependencies": ["ast-spec"],
   "targets": {
     "lint": {

Diff for: packages/types/vitest.config.mts

@@ -0,0 +1,20 @@
+import { defineConfig, mergeConfig } from 'vitest/config';
+
+import { vitestBaseConfig } from '../../vitest.config.base.mjs';
+import packageJson from './package.json' with { type: 'json' };
+
+const vitestConfig = mergeConfig(
+  vitestBaseConfig,
+
+  defineConfig({
+    root: import.meta.dirname,
+
+    test: {
+      name: packageJson.name.replace('@typescript-eslint/', ''),
+      root: import.meta.dirname,
+      passWithNoTests: true,
+    },
+  }),
+);
+
+export default vitestConfig;

Diff for: yarn.lock

@@ -6131,10 +6131,12 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@typescript-eslint/types@workspace:packages/types"
   dependencies:
+    "@vitest/coverage-v8": ^3.1.1
     prettier: ^3.2.5
     rimraf: "*"
     tsx: "*"
     typescript: "*"
+    vitest: ^3.1.1
   languageName: unknown
   linkType: soft