feat: support generator.js and prompts.js in preset

packages/@vue/cli/__tests__/mock-preset/generator.js

@@ -0,0 +1,5 @@
+module.exports = (api, options) => {
+  api.render(files => {
+    files['test.js'] = options.ok ? 'true' : 'false'
+  })
+}

packages/@vue/cli/__tests__/mock-preset/preset.json

@@ -0,0 +1,5 @@
+{
+  "plugins": {
+    "@vue/cli-plugin-babel": {}
+  }
+}

packages/@vue/cli/__tests__/mock-preset/prompts.js

@@ -0,0 +1,5 @@
+module.exports = [{
+  type: 'confirm',
+  name: 'ok',
+  message: 'Are you ok?'
+}]

packages/@vue/cli/__tests__/preset.spec.js

@@ -0,0 +1,32 @@
+jest.mock('inquirer')
+const { expectPrompts } = require('inquirer')
+
+const path = require('path')
+const fs = require('fs-extra')
+const create = require('@vue/cli/lib/create')
+
+test('fetching local preset with prompts and generator', async () => {
+  const cwd = path.resolve(__dirname, '../../../test')
+  const name = 'test-preset'
+
+  expectPrompts([{
+    message: 'Are you ok',
+    confirm: true
+  }])
+
+  await create(
+    name,
+    {
+      force: true,
+      git: false,
+      cwd,
+      preset: path.resolve(__dirname, './mock-preset')
+    }
+  )
+
+  const testFile = await fs.readFile(path.resolve(cwd, name, 'test.js'), 'utf-8')
+  expect(testFile).toBe('true')
+
+  const pkg = require(path.resolve(cwd, name, 'package.json'))
+  expect(pkg.devDependencies).toHaveProperty('@vue/cli-plugin-babel')
+})

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

@@ -1,9 +1,9 @@
-const EventEmitter = require('events')
-const fs = require('fs-extra')
+const path = require('path')
 const chalk = require('chalk')
 const debug = require('debug')
 const execa = require('execa')
 const inquirer = require('inquirer')
+const EventEmitter = require('events')
 const Generator = require('./Generator')
 const cloneDeep = require('lodash.clonedeep')
 const sortObject = require('./util/sortObject')
@@ -13,7 +13,8 @@ const { clearConsole } = require('./util/clearConsole')
 const PromptModuleAPI = require('./PromptModuleAPI')
 const writeFileTree = require('./util/writeFileTree')
 const { formatFeatures } = require('./util/features')
-const fetchRemotePreset = require('./util/fetchRemotePreset')
+const loadLocalPreset = require('./util/loadLocalPreset')
+const loadRemotePreset = require('./util/loadRemotePreset')
 const generateReadme = require('./util/generateReadme')
 
 const {
@@ -113,8 +114,13 @@ module.exports = class Creator extends EventEmitter {
     }
     const deps = Object.keys(preset.plugins)
     deps.forEach(dep => {
-      pkg.devDependencies[dep] = preset.plugins[dep].version ||
+      if (preset.plugins[dep]._isPreset) {
+        return
+      }
+      pkg.devDependencies[dep] = (
+        preset.plugins[dep].version ||
         (/^@vue/.test(dep) ? `^${latest}` : `latest`)
+      )
     })
     // write package.json
     await writeFileTree(context, {
@@ -267,13 +273,13 @@ module.exports = class Creator extends EventEmitter {
 
     if (name in savedPresets) {
       preset = savedPresets[name]
-    } else if (name.endsWith('.json')) {
-      preset = await fs.readJson(name)
+    } else if (name.endsWith('.json') || /^[./\\]/.test(name)) {
+      preset = await loadLocalPreset(path.resolve(name))
     } else if (name.includes('/')) {
       logWithSpinner(`Fetching remote preset ${chalk.cyan(name)}...`)
       this.emit('creation', { event: 'fetch-remote-preset' })
       try {
-        preset = await fetchRemotePreset(name, clone)
+        preset = await loadRemotePreset(name, clone)
         stopSpinner()
       } catch (e) {
         stopSpinner()
@@ -312,7 +318,8 @@ module.exports = class Creator extends EventEmitter {
       if (options.prompts) {
         const prompts = loadModule(`${id}/prompts`, this.context)
         if (prompts) {
-          console.log(`\n${chalk.cyan(id)}`)
+          log()
+          log(`${chalk.cyan(options._isPreset ? `Preset options:` : id)}`)
           options = await inquirer.prompt(prompts)
         }
       }

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

@@ -13,9 +13,10 @@ async function create (projectName, options) {
     process.env.HTTP_PROXY = options.proxy
   }
 
+  const cwd = options.cwd || process.cwd()
   const inCurrent = projectName === '.'
-  const name = inCurrent ? path.relative('../', process.cwd()) : projectName
-  const targetDir = path.resolve(projectName || '.')
+  const name = inCurrent ? path.relative('../', cwd) : projectName
+  const targetDir = path.resolve(cwd, projectName || '.')
 
   const result = validateProjectName(name)
   if (!result.validForNewPackages) {
@@ -70,7 +71,7 @@ async function create (projectName, options) {
 }
 
 module.exports = (...args) => {
-  create(...args).catch(err => {
+  return create(...args).catch(err => {
     stopSpinner(false) // do not persist
     error(err)
     process.exit(1)

packages/@vue/cli/lib/util/loadLocalPreset.js

@@ -0,0 +1,13 @@
+const fs = require('fs-extra')
+const loadPresetFromDir = require('./loadPresetFromDir')
+
+module.exports = async function loadLocalPreset (path) {
+  const stats = fs.statSync(path)
+  if (stats.isFile()) {
+    return await fs.readJson(path)
+  } else if (stats.isDirectory()) {
+    return await loadPresetFromDir(path)
+  } else {
+    throw new Error(`Invalid local preset path: ${path}`)
+  }
+}

packages/@vue/cli/lib/util/loadPresetFromDir.js

@@ -0,0 +1,22 @@
+const path = require('path')
+const fs = require('fs-extra')
+
+module.exports = async function loadPresetFromDir (dir) {
+  const presetPath = path.join(dir, 'preset.json')
+  if (!fs.existsSync(presetPath)) {
+    throw new Error('remote / local preset does not contain preset.json!')
+  }
+  const preset = await fs.readJson(presetPath)
+
+  // if the preset dir contains generator.js, we will inject it as a hidden
+  // plugin so it will be invoked by the generator.
+  const generatorPath = path.join(dir, 'generator.js')
+  if (fs.existsSync(generatorPath)) {
+    (preset.plugins || (preset.plugins = {}))[dir.replace(/[\/]$/, '')] = {
+      _isPreset: true,
+      prompts: true
+    }
+  }
+
+  return preset
+}

packages/@vue/cli/lib/util/fetchRemotePreset.js → packages/@vue/cli/lib/util/loadRemotePreset.js

@@ -1,14 +1,7 @@
 const fs = require('fs-extra')
+const loadPresetFromDir = require('./loadPresetFromDir')
 
 module.exports = async function fetchRemotePreset (name, clone) {
-  // github shorthand fastpath
-  if (!clone && /^[\w_-]+\/[\w_-]+$/.test(name)) {
-    const { request } = require('@vue/cli-shared-utils')
-    return request.get(`https://raw.githubusercontent.com/${name}/master/preset.json`)
-      .then(res => res.body)
-  }
-
-  // fallback to full download
   const os = require('os')
   const path = require('path')
   const download = require('download-git-repo')
@@ -20,16 +13,12 @@ module.exports = async function fetchRemotePreset (name, clone) {
     await fs.remove(tmpdir)
   }
 
-  return new Promise((resolve, reject) => {
+  await new Promise((resolve, reject) => {
     download(name, tmpdir, { clone }, err => {
       if (err) return reject(err)
-      let preset
-      try {
-        preset = require(path.join(tmpdir, 'preset.json'))
-      } catch (e) {
-        return reject(e)
-      }
-      resolve(preset)
+      resolve()
     })
   })
+
+  return await loadPresetFromDir(tmpdir)
 }