Fix TS test running when project is first initialized with japa (#7)

.github/workflows/checks.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [18.16.0, 20.x]
+        node-version: ["lts/iron", "lts/jod", "latest"]
 
     steps:
     - name: Checkout code
@@ -37,7 +37,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        node-version: [18.16.0, 20.x]
+        node-version: ["lts/iron", "lts/jod", "latest"]
 
     steps:
     - name: Checkout code

package.json

@@ -3,7 +3,7 @@
   "description": "Setup japa inside an existing Node.js project",
   "version": "2.1.3",
   "engines": {
-    "node": ">=18.16.0"
+     "node": ">=20.9.0"
   },
   "main": "build/index.js",
   "type": "module",

src/install_japa.ts

@@ -279,7 +279,7 @@ export class InstallJapa extends BaseCommand {
 
     const testScript =
       this.projectType === 'typescript'
-        ? 'node --loader ts-node/esm --enable-source-maps bin/test.ts'
+        ? 'node --import ts-node-maintained/register/esm --enable-source-maps bin/test.ts'
         : 'node bin/test.js'
 
     /**
@@ -289,7 +289,8 @@ export class InstallJapa extends BaseCommand {
       await this.#createNewPkgJson(basename(this.destination), testScript)
       await this.#installPackages([
         ...this.#packageToInstall.map((pkg) => `${pkg}@latest`),
-        'ts-node',
+        'ts-node-maintained',
+        '@swc/core',
         'typescript',
       ])
 
@@ -311,6 +312,45 @@ export class InstallJapa extends BaseCommand {
     await this.#installPackages(this.#packageToInstall.map((pkg) => pkg + '@latest'))
   }
 
+  /**
+   * Create or update the package.json file based upon the user selections
+   */
+
+  async #createOrUpdateTSconfig() {
+    const tsConfigPath = join(this.destination, 'tsconfig.json')
+
+    /**
+     * Create a new tsconfig.json file when missing
+     */
+    if (!existsSync(tsConfigPath)) {
+      await this.#writeFile(
+        'tsconfig.json',
+        JSON.stringify(
+          {
+            compilerOptions: {
+              module: 'NodeNext',
+            },
+          },
+          null,
+          2
+        )
+      )
+      return
+    }
+
+    /**
+     * Update existing tsconfig.json file
+     */
+    const tsConfigJson = JSON.parse(await readFile(tsConfigPath, 'utf-8'))
+    tsConfigJson.compilerOptions = {
+      ...tsConfigJson.compilerOptions,
+      module: 'NodeNext',
+    }
+
+    await writeFile(tsConfigPath, JSON.stringify(tsConfigJson, null, 2))
+    this.logger.action('update tsconfig.json').succeeded()
+  }
+
   /**
    * Print final instructions to the user
    */
@@ -420,6 +460,14 @@ export class InstallJapa extends BaseCommand {
      */
     await this.#createOrUpdatePkgJson()
 
+    /**
+     * Create or update the tsconfig.json file
+     * if ts preset is selected
+     */
+    if (this.projectType === 'typescript') {
+      await this.#createOrUpdateTSconfig()
+    }
+
     this.#printSuccessSticker()
   }
 }

tests/install.spec.ts

@@ -265,7 +265,7 @@ test.group('install', (group) => {
 
     assert.deepEqual(pkg.type, 'module')
     assert.deepEqual(pkg.scripts, {
-      test: 'node --loader ts-node/esm --enable-source-maps bin/test.ts',
+      test: 'node --import ts-node-maintained/register/esm --enable-source-maps bin/test.ts',
     })
   })
 
@@ -285,7 +285,7 @@ test.group('install', (group) => {
 
     assert.deepEqual(pkg.type, 'module')
     assert.deepEqual(pkg.scripts, {
-      test: 'node --loader ts-node/esm --enable-source-maps bin/test.ts',
+      test: 'node --import ts-node-maintained/register/esm --enable-source-maps bin/test.ts',
     })
     assert.deepEqual(pkg.name, 'foo')
     assert.deepEqual(pkg.description, 'blabla')
@@ -312,4 +312,45 @@ test.group('install', (group) => {
       process.env.npm_config_user_agent = undefined
     })
     .disableTimeout()
+
+  test('should create tsconfig.json if ts is selected and no tsconfig exists', async ({
+    assert,
+    fs,
+  }) => {
+    const command = await kernel.create(InstallJapa, [fs.basePath])
+
+    trapPrompts(command)
+
+    await command.exec()
+
+    await assert.fileExists('tsconfig.json')
+    const config = await fs.contentsJson('tsconfig.json')
+
+    assert.deepEqual(config.compilerOptions.module, 'NodeNext')
+  })
+
+  test('should update existing tsconfig.json if exists with correct module setting', async ({
+    assert,
+    fs,
+  }) => {
+    await fs.create(
+      'tsconfig.json',
+      JSON.stringify({ compilerOptions: { target: 'ESNext', lib: ['ESNext'] } })
+    )
+
+    kernel.ui.switchMode('raw')
+
+    const command = await kernel.create(InstallJapa, [fs.basePath])
+
+    trapPrompts(command)
+
+    await command.exec()
+
+    await assert.fileExists('tsconfig.json')
+    const config = await fs.contentsJson('tsconfig.json')
+
+    assert.deepEqual(config.compilerOptions.target, 'ESNext')
+    assert.deepEqual(config.compilerOptions.lib[0], 'ESNext')
+    assert.deepEqual(config.compilerOptions.module, 'NodeNext')
+  })
 })