fix tsconfig + remove forgotten duplicated test (#4886)

packages/typescript/src/index.js

@@ -44,6 +44,9 @@ export async function setup(tsConfigPath) {
   }
   // https://github.com/TypeStrong/ts-node
   register({
-    project: tsConfigPath
+    project: tsConfigPath,
+    compilerOptions: {
+      module: 'commonjs'
+    }
   })
 }

packages/typescript/test/setup.test.js

@@ -35,7 +35,10 @@ describe('typescript setup', () => {
 
     expect(register).toHaveBeenCalledTimes(1)
     expect(register).toHaveBeenCalledWith({
-      project: tsConfigPath
+      project: tsConfigPath,
+      compilerOptions: {
+        module: 'commonjs'
+      }
     })
   })
 

packages/typescript/tsconfig.json

@@ -1,6 +1,7 @@
 {
   "compilerOptions": {
     "target": "esnext",
+    "module": "esnext",
     "moduleResolution": "node",
     "lib": [
       "esnext",

test/unit/typescript.setup.test.js

@@ -1,46 +0,0 @@
-import { resolve } from 'path'
-import { exists, mkdirp, readJSON, remove } from 'fs-extra'
-import { register } from 'ts-node'
-import { setup as setupTypeScript } from '@nuxt/typescript'
-
-jest.mock('ts-node')
-
-describe('typescript setup', () => {
-  const rootDir = 'tmp'
-  const tsConfigPath = resolve(rootDir, 'tsconfig.json')
-
-  beforeAll(async () => {
-    // We're assuming that rootDir provided to setupTypeScript is existing so we create the tested one
-    await mkdirp(rootDir)
-    await setupTypeScript(tsConfigPath)
-  })
-
-  test('tsconfig.json has been generated if missing', async () => {
-    expect(await exists(tsConfigPath)).toBe(true)
-    expect(await readJSON(tsConfigPath)).toEqual({
-      extends: '@nuxt/typescript',
-      compilerOptions: {
-        baseUrl: '.',
-        types: [
-          '@types/node',
-          '@nuxt/vue-app'
-        ]
-      }
-    })
-  })
-
-  test('ts-node has been registered once', async () => {
-    // Call setupTypeScript a second time to test guard
-    await setupTypeScript(tsConfigPath)
-
-    expect(register).toHaveBeenCalledTimes(1)
-    expect(register).toHaveBeenCalledWith({
-      project: tsConfigPath
-    })
-  })
-
-  afterAll(async () => {
-    // Clean workspace by removing the temporary folder (and the generated tsconfig.json at the same time)
-    await remove(tsConfigPath)
-  })
-})