init project is not supported Android 4.4.4

[zhump]

Version

3.2.0

Reproduction link

https://codesandbox.io/s/pjqk6plz3m

Environment info

 System:
    OS: macOS 10.14.2
    CPU: (4) x64 Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz
  Binaries:
    Node: 8.13.0 - ~/.nvm/versions/node/v8.13.0/bin/node
    Yarn: 1.12.3 - ~/.nvm/versions/node/v8.13.0/bin/yarn
    npm: 6.4.1 - ~/.nvm/versions/node/v8.13.0/bin/npm
  Browsers:
    Chrome: 71.0.3578.98
    Firefox: 61.0.2
    Safari: 12.0.2
  npmPackages:
    @vue/babel-preset-app:  3.2.0
    @vue/cli-overlay:  3.2.0
    @vue/cli-plugin-babel: ^3.2.0 => 3.2.0
    @vue/cli-plugin-eslint: ^3.2.0 => 3.2.1
    @vue/cli-service: ^3.2.0 => 3.2.0
    @vue/cli-shared-utils:  3.2.0
    @vue/component-compiler-utils:  2.3.1
    @vue/eslint-config-standard: ^4.0.0 => 4.0.0
    @vue/preload-webpack-plugin:  1.1.0
    @vue/web-component-wrapper:  1.2.0
    babel-helper-vue-jsx-merge-props:  2.0.3
    babel-plugin-transform-vue-jsx:  4.0.1
    eslint-plugin-vue: ^5.0.0-0 => 5.0.0
    vue: ^2.5.17 => 2.5.21
    vue-eslint-parser:  4.0.3
    vue-hot-reload-api:  2.3.1
    vue-loader:  15.4.2
    vue-router: ^3.0.1 => 3.0.2
    vue-style-loader:  4.1.2
    vue-template-compiler: ^2.5.17 => 2.5.21
    vue-template-es2015-compiler:  1.6.0
    vuex: ^3.0.1 => 3.0.1
  npmGlobalPackages:

Steps to reproduce

main.js 增加

document.querySelectorAll('.dd')

---

import Vue from 'vue'
import App from './App.vue'
var b = document.querySelectorAll('.dd')
console.log(b.length)
var a = [...b]
a.forEach(function (item) {
})
new Vue({
  render: h => h(App)
}).$mount('#app')

What is expected?

可在Android 4.4.4上运行

What is actually happening?

var b = document.querySelectorAll('.dd')
var a = [...b]
不支持如上的es6语法转化。

---

我尝试着重新初始化一个babel的项目

.babeklrc

{
  "presets": [
    [
      "@babel/preset-env",
      {
        "useBuiltIns": "usage"
      }
    ]
  ]
}

index.js

var b = document.querySelectorAll('.dd')
console.log(b.length)
var a = [...b]
console.log(a)

lib/index.js

"use strict";

require("core-js/modules/es6.string.iterator");

require("core-js/modules/es6.array.from");

require("core-js/modules/es6.regexp.to-string");

require("core-js/modules/es6.date.to-string");

require("core-js/modules/es7.symbol.async-iterator");

require("core-js/modules/es6.symbol");

require("core-js/modules/web.dom.iterable");

require("core-js/modules/es6.array.is-array");

function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread(); }

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance"); }

function _iterableToArray(iter) { if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]" || Object.prototype.toString.call(iter) === "[object NodeList]") return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } }

var b = document.querySelectorAll('.dd');
console.log(b.length);

var a = _toConsumableArray(b);

console.log(a);

babel转化时"useBuiltIns": "usage"生效。增加了es6.array.from。但是vue-cli的'@vue/app'，观察debug时，并没有识别到。

[haoqunjiang]

FYI the bug is introduced here:

vue-cli/packages/@vue/babel-preset-app/index.js

Line 145 in be56537

corejs: useBuiltIns !== false ? false : 2,

I may have misunderstood the actual meaning of this option when I added it.