feat: generate projects with transpileDependencies: true by default (#6663)

Author: haoqunjiang

Diff for: packages/@vue/cli-plugin-babel/__tests__/transpileDependencies.spec.js

@@ -49,6 +49,7 @@ beforeAll(async () => {
   $packageJson.browserslist.push('safari 11') // to ensure optional chaining transformation is enabled
   $packageJson.dependencies['external-dep'] = '1.0.0'
   $packageJson.dependencies['@scope/external-dep'] = '1.0.0'
+  delete $packageJson.vue
   $packageJson = JSON.stringify($packageJson)
 
   await project.write(

Diff for: packages/@vue/cli-plugin-babel/generator.js

@@ -9,6 +9,9 @@ module.exports = api => {
     babel: {
       presets: ['@vue/cli-plugin-babel/preset']
     },
+    vue: {
+      transpileDependencies: true
+    },
     dependencies: {
       'core-js': '^3.8.3'
     }

Diff for: packages/@vue/cli-plugin-eslint/__tests__/eslintGenerator.spec.js

@@ -159,9 +159,7 @@ test('lint on commit', async () => {
   expect(pkg['lint-staged']).toEqual({
     '*.{js,jsx,vue}': 'vue-cli-service lint'
   })
-  expect(pkg.vue).toEqual({
-    lintOnSave: false
-  })
+  expect(pkg.vue.lintOnSave).toBe(false)
 })
 
 test('should lint ts files when typescript plugin co-exists', async () => {