migrate to vitest

package.json

@@ -36,12 +36,13 @@
     "precommit": "lint-staged",
     "prepare": "npm run build && husky",
     "pretest": "eslint .",
-    "test": "c8 esmocha --forbid-only"
+    "test": "vitest run --coverage"
   },
   "config": {
     "doc_path": "../yeoman-test-doc"
   },
   "dependencies": {
+    "@vitest/coverage-v8": "^2.0.5",
     "@yeoman/adapter": "^1.5.0",
     "inquirer": "^9.2.2",
     "lodash-es": "^4.17.21",
@@ -55,9 +56,7 @@
     "@types/lodash-es": "^4.17.12",
     "@types/node": "^18.19.46",
     "@yeoman/eslint": "0.2.0",
-    "c8": "^10.1.2",
     "coveralls": "^3.1.1",
-    "esmocha": "^1.0.1",
     "husky": "^9.1.5",
     "jsdoc": "^4.0.2",
     "lint-staged": "^15.2.9",

src/run-context.ts

@@ -760,7 +760,7 @@ export class RunContextBase<GeneratorType extends BaseGenerator = DefaultGenerat
         .catch(error => {
           if (this.listenerCount('end') === 0 && this.listenerCount('error') === 0) {
             // When there is no listeners throw a unhandled rejection.
-            setImmediate(async function () {
+            setImmediate(async () => {
               throw error;
             });
           } else {

src/run-result.ts

@@ -13,14 +13,14 @@ import { type AskedQuestions } from './adapter.js';
 
 const isObject = object => typeof object === 'object' && object !== null && object !== undefined;
 
-function convertArguments(arguments_) {
+const convertArguments = arguments_ => {
   if (arguments_.length > 1) {
     return [[...arguments_]];
   }
 
   const [argument] = arguments_;
   return Array.isArray(argument) ? argument : [argument];
-}
+};
 
 /**
  * Provides options for `RunResult`s.

test/adapter.spec.ts

@@ -1,28 +1,28 @@
 import assert from 'node:assert';
-import { describe, expect, it } from 'esmocha';
+import { describe, expect, it } from 'vitest';
 import { TestAdapter } from '../src/adapter.js';
 
-describe('TestAdapter', function () {
-  describe('#prompt()', function () {
-    it('allows pre-filled answers', async function () {
+describe('TestAdapter', () => {
+  describe('#prompt()', () => {
+    it('allows pre-filled answers', async () => {
       const adapter = new TestAdapter();
       return adapter
         .prompt([{ name: 'respuesta', message: 'foo', type: 'input', default: 'bar' }], {
           respuesta: 'foo',
         })
-        .then(function (answers) {
+        .then(answers => {
           assert.equal(answers.respuesta, 'foo');
         });
     });
   });
-  describe('#queue()', function () {
-    it('should execute the callback', async function () {
+  describe('#queue()', () => {
+    it('should execute the callback', async () => {
       const adapter = new TestAdapter();
       await expect(adapter.queue(() => 2)).resolves.toBe(2);
     });
   });
-  describe('#progress()', function () {
-    it('should execute the callback', async function () {
+  describe('#progress()', () => {
+    it('should execute the callback', async () => {
       const adapter = new TestAdapter();
       await expect(
         adapter.progress(({ step }) => {