typescript-eslint · JoshuaKGoldberg · Apr 14, 2025 · Jan 18, 2025 · Jan 18, 2025 · Jan 18, 2025
diff --git a/eslint.config.mjs b/eslint.config.mjs
@@ -39,6 +39,7 @@ const vitestFiles = [
   'packages/rule-tester/tests/**/*.test.{ts,tsx,cts,mts}',
   'packages/type-utils/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}',
   'packages/visitor-keys/tests/**/*.test.{ts,tsx,cts,mts}',
 ];

diff --git a/knip.ts b/knip.ts
@@ -85,6 +85,11 @@ export default {
     'packages/typescript-estree': {
       entry: ['src/use-at-your-own-risk.ts'],
       ignore: ['tests/fixtures/**', 'typings/typescript.d.ts'],
+
+      vitest: {
+        config: ['vitest.config.mts'],
+        entry: ['tests/lib/**/*.{bench,test,test-d}.?(c|m)ts?(x)'],
+      },
     },
     'packages/utils': {
       ignore: [

diff --git a/package.json b/package.json
@@ -80,7 +80,6 @@
     "@types/natural-compare": "^1.4.3",
     "@types/node": "^20.12.5",
     "@types/semver": "^7.5.8",
-    "@types/tmp": "^0.2.6",
     "@types/yargs": "^17.0.32",
     "@typescript-eslint/eslint-plugin": "workspace:^",
     "@typescript-eslint/eslint-plugin-internal": "workspace:^",

diff --git a/packages/typescript-estree/jest.config.js b/packages/typescript-estree/jest.config.js
diff --git a/packages/typescript-estree/package.json b/packages/typescript-estree/package.json
@@ -49,7 +49,7 @@
     "postclean": "rimraf dist/ coverage/",
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "lint": "npx nx lint",
-    "test": "jest --runInBand --verbose",
+    "test": "vitest --run --config=$INIT_CWD/vitest.config.mts",
     "check-types": "npx nx typecheck"
   },
   "dependencies": {
@@ -63,13 +63,12 @@
     "ts-api-utils": "^2.0.1"
   },
   "devDependencies": {
-    "@jest/types": "29.6.3",
+    "@vitest/coverage-v8": "^3.1.1",
     "glob": "*",
-    "jest": "29.7.0",
     "prettier": "^3.2.5",
     "rimraf": "*",
-    "tmp": "*",
-    "typescript": "*"
+    "typescript": "*",
+    "vitest": "^3.1.1"
   },
   "peerDependencies": {
     "typescript": ">=4.8.4 <5.9.0"

diff --git a/packages/typescript-estree/project.json b/packages/typescript-estree/project.json
@@ -1,12 +1,16 @@
 {
   "name": "typescript-estree",
   "$schema": "../../node_modules/nx/schemas/project-schema.json",
-  "type": "library",
-  "implicitDependencies": ["types"],
+  "projectType": "library",
+  "root": "packages/typescript-estree",
+  "sourceRoot": "packages/typescript-estree/src",
   "targets": {
     "lint": {
       "executor": "@nx/eslint:lint",
       "outputs": ["{options.outputFile}"]
+    },
+    "test": {
+      "executor": "@nx/vite:test"
     }
   }
 }
diff --git a/packages/typescript-estree/tests/lib/__snapshots__/convert.test.ts.snap b/packages/typescript-estree/tests/lib/__snapshots__/convert.test.ts.snap
@@ -1,6 +1,6 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`convert deeplyCopy should convert array of nodes 1`] = `
+exports[`convert > deeplyCopy > should convert array of nodes 1`] = `
 {
   "ambientModuleNames": undefined,
   "amdDependencies": [],
@@ -200,7 +200,7 @@ exports[`convert deeplyCopy should convert array of nodes 1`] = `
 }
 `;
 
-exports[`convert deeplyCopy should convert node correctly 1`] = `
+exports[`convert > deeplyCopy > should convert node correctly 1`] = `
 {
   "body": [
     {
@@ -498,7 +498,7 @@ exports[`convert deeplyCopy should convert node correctly 1`] = `
 }
 `;
 
-exports[`convert deeplyCopy should convert node with decorators correctly 1`] = `
+exports[`convert > deeplyCopy > should convert node with decorators correctly 1`] = `
 {
   "decorators": [
     {
@@ -584,7 +584,7 @@ exports[`convert deeplyCopy should convert node with decorators correctly 1`] =
 }
 `;
 
-exports[`convert deeplyCopy should convert node with type arguments correctly 1`] = `
+exports[`convert > deeplyCopy > should convert node with type arguments correctly 1`] = `
 {
   "arguments": [],
   "emitNode": undefined,
@@ -687,7 +687,7 @@ exports[`convert deeplyCopy should convert node with type arguments correctly 1`
 }
 `;
 
-exports[`convert deeplyCopy should convert node with type parameters correctly 1`] = `
+exports[`convert > deeplyCopy > should convert node with type parameters correctly 1`] = `
 {
   "emitNode": undefined,
   "id": 0,

diff --git a/packages/typescript-estree/tests/lib/__snapshots__/describeFilePath.test.ts.snap b/packages/typescript-estree/tests/lib/__snapshots__/describeFilePath.test.ts.snap
diff --git a/packages/typescript-estree/tests/lib/__snapshots__/parse.test.ts.snap b/packages/typescript-estree/tests/lib/__snapshots__/parse.test.ts.snap
@@ -1,6 +1,6 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`parseAndGenerateServices isolated parsing should parse .js file - with JSX content - parserOptions.jsx = false 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .js file - with JSX content - parserOptions.jsx = false 1`] = `
 {
   "ast": {
     "body": [
@@ -297,7 +297,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .js file - with
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .js file - with JSX content - parserOptions.jsx = true 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .js file - with JSX content - parserOptions.jsx = true 1`] = `
 {
   "ast": {
     "body": [
@@ -594,7 +594,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .js file - with
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .js file - without JSX content - parserOptions.jsx = false 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .js file - without JSX content - parserOptions.jsx = false 1`] = `
 {
   "ast": {
     "body": [
@@ -781,7 +781,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .js file - witho
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .js file - without JSX content - parserOptions.jsx = true 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .js file - without JSX content - parserOptions.jsx = true 1`] = `
 {
   "ast": {
     "body": [
@@ -968,7 +968,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .js file - witho
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .json file - without JSX content - parserOptions.jsx = false 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .json file - without JSX content - parserOptions.jsx = false 1`] = `
 {
   "ast": {
     "body": [
@@ -1191,7 +1191,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .json file - wit
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .jsx file - with JSX content - parserOptions.jsx = false 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .jsx file - with JSX content - parserOptions.jsx = false 1`] = `
 {
   "ast": {
     "body": [
@@ -1488,7 +1488,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .jsx file - with
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .jsx file - with JSX content - parserOptions.jsx = true 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .jsx file - with JSX content - parserOptions.jsx = true 1`] = `
 {
   "ast": {
     "body": [
@@ -1785,7 +1785,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .jsx file - with
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .jsx file - without JSX content - parserOptions.jsx = false 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .jsx file - without JSX content - parserOptions.jsx = false 1`] = `
 {
   "ast": {
     "body": [
@@ -1972,7 +1972,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .jsx file - with
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .jsx file - without JSX content - parserOptions.jsx = true 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .jsx file - without JSX content - parserOptions.jsx = true 1`] = `
 {
   "ast": {
     "body": [
@@ -2159,7 +2159,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .jsx file - with
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .ts file - without JSX content - parserOptions.jsx = false 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .ts file - without JSX content - parserOptions.jsx = false 1`] = `
 {
   "ast": {
     "body": [
@@ -2346,7 +2346,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .ts file - witho
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .ts file - without JSX content - parserOptions.jsx = true 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .ts file - without JSX content - parserOptions.jsx = true 1`] = `
 {
   "ast": {
     "body": [
@@ -2533,7 +2533,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .ts file - witho
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .tsx file - with JSX content - parserOptions.jsx = false 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .tsx file - with JSX content - parserOptions.jsx = false 1`] = `
 {
   "ast": {
     "body": [
@@ -2830,7 +2830,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .tsx file - with
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .tsx file - with JSX content - parserOptions.jsx = true 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .tsx file - with JSX content - parserOptions.jsx = true 1`] = `
 {
   "ast": {
     "body": [
@@ -3127,7 +3127,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .tsx file - with
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .tsx file - without JSX content - parserOptions.jsx = false 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .tsx file - without JSX content - parserOptions.jsx = false 1`] = `
 {
   "ast": {
     "body": [
@@ -3314,7 +3314,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .tsx file - with
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .tsx file - without JSX content - parserOptions.jsx = true 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .tsx file - without JSX content - parserOptions.jsx = true 1`] = `
 {
   "ast": {
     "body": [
@@ -3501,7 +3501,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .tsx file - with
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .vue file - with JSX content - parserOptions.jsx = true 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .vue file - with JSX content - parserOptions.jsx = true 1`] = `
 {
   "ast": {
     "body": [
@@ -3798,7 +3798,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .vue file - with
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .vue file - without JSX content - parserOptions.jsx = false 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .vue file - without JSX content - parserOptions.jsx = false 1`] = `
 {
   "ast": {
     "body": [
@@ -3985,7 +3985,7 @@ exports[`parseAndGenerateServices isolated parsing should parse .vue file - with
 }
 `;
 
-exports[`parseAndGenerateServices isolated parsing should parse .vue file - without JSX content - parserOptions.jsx = true 1`] = `
+exports[`parseAndGenerateServices > isolated parsing > should parse .vue file - without JSX content - parserOptions.jsx = true 1`] = `
 {
   "ast": {
     "body": [

diff --git a/packages/typescript-estree/tests/lib/__snapshots__/semanticInfo.test.ts.snap b/packages/typescript-estree/tests/lib/__snapshots__/semanticInfo.test.ts.snap
@@ -1,6 +1,6 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`semanticInfo fixtures/export-file.src 1`] = `
+exports[`semanticInfo > fixtures/export-file.src 1`] = `
 {
   "body": [
     {
@@ -300,7 +300,7 @@ exports[`semanticInfo fixtures/export-file.src 1`] = `
 }
 `;
 
-exports[`semanticInfo fixtures/import-file.src 1`] = `
+exports[`semanticInfo > fixtures/import-file.src 1`] = `
 {
   "body": [
     {
@@ -789,7 +789,7 @@ exports[`semanticInfo fixtures/import-file.src 1`] = `
 }
 `;
 
-exports[`semanticInfo fixtures/isolated-file.src 1`] = `
+exports[`semanticInfo > fixtures/isolated-file.src 1`] = `
 {
   "body": [
     {
@@ -1148,7 +1148,7 @@ exports[`semanticInfo fixtures/isolated-file.src 1`] = `
 }
 `;
 
-exports[`semanticInfo fixtures/non-existent-estree-nodes.src 1`] = `
+exports[`semanticInfo > fixtures/non-existent-estree-nodes.src 1`] = `
 {
   "body": [
     {