adjust setup

README.md

@@ -5,25 +5,21 @@
 
 ## Development Setup
 
-This project uses a monorepo setup that requires [Lerna](https://github.com/lerna/lerna) and [Yarn](https://yarnpkg.com).
+This project uses a monorepo setup that requires using [Yarn](https://yarnpkg.com) because it relies on [Yarn workspaces](https://yarnpkg.com/blog/2017/08/02/introducing-workspaces/).
 
 ``` sh
-# install root dependencies
+# install dependencies
 yarn
 
-# bootstrap packages
-lerna bootstrap
-
 # link `vue` executable
 cd packages/@vue/cli
 yarn link
 
-# create a test project in /packages
-# note the name must be "test" so that dependencies can be linked properly
+# create test projects in /packages/test
 cd -
-cd packages
-vue create test
-cd test
+cd packages/test
+vue create test-app
+cd test-app
 yarn
 yarn dev
 ```

package.json

@@ -1,8 +1,8 @@
 {
   "private": true,
   "workspaces": [
-    "packages/test",
-    "packages/@vue/*"
+    "packages/@vue/*",
+    "packages/test/*"
   ],
   "scripts": {
     "lint": "eslint --fix packages/**/*.js",

packages/@vue/cli-service/lib/util/resolveClientEnv.js

@@ -6,7 +6,7 @@ module.exports = function resolveClientEnv () {
 
   // TODO load .env files
 
-  const env = { NODE_ENV }
+  const env = { NODE_ENV: JSON.stringify(NODE_ENV) }
   Object.keys(process.env).forEach(key => {
     if (prefixRE.test(key)) {
       env[key] = JSON.stringify(process.env[key])

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

@@ -13,11 +13,21 @@ const debug = require('debug')
 const rcPath = path.join(os.homedir(), '.vuerc')
 const isMode = _mode => ({ mode }) => _mode === mode
 
+const hasYarn = (() => {
+  try {
+    execSync('yarnpkg --version', { stdio: 'ignore' })
+    return true
+  } catch (e) {
+    return false
+  }
+})()
+
 const defaultOptions = {
   features: ['eslint', 'unit'],
   eslint: 'eslint-only',
   unit: 'mocha',
-  assertionLibrary: 'chai'
+  assertionLibrary: 'chai',
+  packageManager: hasYarn ? 'yarn' : 'npm'
 }
 
 module.exports = class Creator {
@@ -79,6 +89,10 @@ module.exports = class Creator {
     this.files['package.json'] = JSON.stringify(this.pkg, null, 2)
     // write file tree to disk
     await writeFileTree(path, this.files)
+
+    if (options.packageManager) {
+      // TODO install deps
+    }
   }
 
   resolveIntroPrompts () {
@@ -125,7 +139,7 @@ module.exports = class Creator {
         message: 'Save the preferences for future projects?'
       }
     ]
-    if (hasYarn()) {
+    if (hasYarn) {
       outroPrompts.unshift({
         name: 'packageManager',
         when: isMode('manual'),
@@ -220,12 +234,3 @@ module.exports = class Creator {
     debug('files')(this.files)
   }
 }
-
-function hasYarn () {
-  try {
-    execSync('yarnpkg --version', { stdio: 'ignore' })
-    return true
-  } catch (e) {
-    return false
-  }
-}

packages/@vue/cli/lib/generators/unit/files/test/unit/HelloWorld.spec.js

@@ -1,5 +1,5 @@
 import { shallow } from 'vue-test-utils'
-<%_ if (options.assertionLibrary === 'expect') { _%>
+<%_ if (options.assertionLibrary === 'expect' && options.unit !== 'jest') { _%>
 import { expect } from 'expect'
 <%_ } _%>
 <%_ if (options.assertionLibrary === 'chai') { _%>
@@ -13,7 +13,7 @@ describe('Hello.vue', () => {
     const wrapper = shallow(HelloWorld, {
       context: { props: { msg } }
     })
-    <%_ if (options.assertionLibrary === 'expect') { _%>
+    <%_ if (options.assertionLibrary === 'expect' || options.unit === 'jest') { _%>
     expect(wrapper.text()).toBe(msg)
     <%_ } else if (options.assertionLibrary === 'chai') { _%>
     expect(wrapper.text()).to.equal(msg)

packages/@vue/cli/lib/generators/unit/jest.js

@@ -1,5 +1,4 @@
 module.exports = (api, options) => {
-  options.assertionLibrary = 'expect'
   api.renderFiles('./files')
   api.extendPackage({
     scripts: {