feat: generate projects with transpileDependencies: true by default

Author: haoqunjiang

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

@@ -77,6 +77,7 @@ afterAll(async () => {
 })
 
 test('dep from node_modules should not been transpiled by default', async () => {
+  await project.write('vue.config.js', `module.exports = {}`)
   await project.run('vue-cli-service build')
   expect(await readLegacyVendorFile()).toMatch('() => "__TEST__"')
 })

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'
     }

packages/@vue/cli/lib/Generator.js

@@ -240,10 +240,8 @@ module.exports = class Generator {
         extract(key)
       }
     } else {
-      if (!process.env.VUE_CLI_TEST) {
-        // by default, always extract vue.config.js
-        extract('vue')
-      }
+      // by default, always extract vue.config.js
+      extract('vue')
       // always extract babel.config.js as this is the only way to apply
       // project-wide configuration even to dependencies.
       // TODO: this can be removed when Babel supports root: true in package.json