jest to vitest (#28)

Author: tatethurston

babel.config.cjs

@@ -21,15 +21,17 @@ export default [
   },
   {
     files: ["*.ts"],
-    parser: "@typescript-eslint/parser",
-    parserOptions: {
-      // eslint-disable-next-line no-undef
-      tsconfigRootDir: process.cwd(),
-      project: [
-        "./tsconfig.json",
-        "./packages/*/tsconfig.json",
-        "./examples/*/tsconfig.json",
-      ],
+    languageOptions: {
+      parser: tsParser,
+      parserOptions: {
+        // eslint-disable-next-line no-undef
+        tsconfigRootDir: process.cwd(),
+        project: [
+          "./tsconfig.json",
+          "./packages/*/tsconfig.json",
+          "./examples/*/tsconfig.json",
+        ],
+      },
     },
     rules: {
       ...typescriptPlugin.configs["recommended-requiring-type-checking"].rules,

eslint.config.mjs

@@ -19,29 +19,26 @@
     "lint:fix:package": "prettier-package-json --write package.json",
     "package:copy:files": "cp README.md LICENSE CHANGELOG.md packages/eslint-plugin-react-prefer-function-component",
     "prepare": "husky install",
-    "test": "pnpm jest",
-    "test:ci": "pnpm jest --coverage",
+    "test": "pnpm vitest",
+    "test:ci": "pnpm vitest --coverage",
     "typecheck": "pnpm run --recursive typecheck"
   },
   "devDependencies": {
-    "@babel/preset-env": "^7.26.9",
-    "@babel/preset-react": "^7.26.3",
-    "@babel/preset-typescript": "^7.26.0",
     "@types/eslint": "^9.6.1",
     "@types/estree": "^1.0.6",
-    "@types/jest": "^29.5.14",
     "@types/node": "^22.13.10",
-    "@typescript-eslint/eslint-plugin": "^8.26.1",
-    "@typescript-eslint/parser": "^8.26.1",
+    "@typescript-eslint/eslint-plugin": "^8.27.0",
+    "@typescript-eslint/parser": "^8.27.0",
+    "@vitest/coverage-v8": "3.0.9",
     "eslint": "^9.22.0",
     "eslint-config-prettier": "^10.1.1",
     "eslint-plugin-react": "^7.37.4",
     "eslint-plugin-react-hooks": "^5.2.0",
     "husky": "^9.1.7",
-    "jest": "^29.7.0",
     "prettier": "^3.5.3",
     "prettier-package-json": "^2.8.0",
-    "typescript": "^5.8.2"
+    "typescript": "^5.8.2",
+    "vitest": "^3.0.9"
   },
   "packageManager": "[email protected]"
 }

jest.config.mjs

@@ -1,3 +1,4 @@
+/* c8 ignore start */
 import type { ESLint } from "eslint";
 import preferFunctionComponent from "./prefer-function-component/index.js";
 

package.json

@@ -1,3 +1,4 @@
+/* c8 ignore start */
 import type { ESLint } from "eslint";
 import PreferFunctionComponent from "./prefer-function-component/index.js";
 

packages/eslint-plugin-react-prefer-function-component/src/config.mts

@@ -1,4 +1,5 @@
 import { spawnSync } from "child_process";
+import { describe, beforeAll, it, expect } from "vitest";
 
 function run(cmd: string) {
   return spawnSync(cmd, { shell: true, encoding: "utf8" });

packages/eslint-plugin-react-prefer-function-component/src/index.ts

@@ -1,4 +1,5 @@
 import { spawnSync } from "child_process";
+import { describe, beforeAll, it, expect } from "vitest";
 
 function run(cmd: string) {
   return spawnSync(cmd, { shell: true, encoding: "utf8" });
@@ -8,7 +9,7 @@ function removeAbsolutePathToEslintFile(str: string): string {
   return str.replace(__dirname, "");
 }
 
-describe("flat config", () => {
+describe("legacy config", () => {
   beforeAll(() => process.chdir(__dirname));
 
   it("flags errors", () => {

packages/eslint-plugin-react-prefer-function-component/src/prefer-function-component/test.ts packages/eslint-plugin-react-prefer-function-component/src/prefer-function-component/index.test.ts

@@ -1,6 +1,5 @@
 {
   "name": "legacy-config",
-  "type": "module",
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
@@ -12,6 +11,6 @@
   "license": "ISC",
   "devDependencies": {
     "eslint": "7.32.0",
-    "eslint-plugin-react-prefer-function-component": "^4.0.0"
+    "eslint-plugin-react-prefer-function-component": "workspace:^"
   }
 }