我遇到了 vue-loader 无法识别 es2015 格式的问题。
以下是我正在采取的步骤:
//initialize the project via vue-cli
vue init webpack-simple && npm i
// start the webpack-dev-server, this npm script is an alias for the command:
// webpack-dev-server --inline --hot
npm run dev
此时文件正在由 webpack-dev-server 在 localhost:8080 成功托管。
当我修改App.vue
并添加任何 es2015 内容时,我从 webpack-dev-server 收到错误消息:
<template>
<div id="app">
<h1>{{ msg }}</h1>
</div>
</template>
<script>
export default {
data () {
return {
msg: 'Hello Vue!'
}
},
// added this function call for the ready lifecycle hook
ready () => alert('worked')
}
</script>
<style>
body {
font-family: Helvetica, sans-serif;
}
</style>
这让我觉得没有安装 babel 的 es2015 预设,但它肯定与转换运行时一起在开发依赖项列表中:
// truncated package.json
{
...
"scripts": {
"dev": "webpack-dev-server --inline --hot",
"build": "cross-env NODE_ENV=production webpack --progress --hide-modules"
},
"dependencies": {
"vue": "^1.0.0",
"babel-runtime": "^5.8.0"
},
"devDependencies": {
"babel-core": "^6.0.0",
"babel-loader": "^6.0.0",
"babel-plugin-transform-runtime": "^6.0.0",
"babel-preset-es2015": "^6.0.0",
"babel-preset-stage-2": "^6.0.0",
"cross-env": "^1.0.6",
"css-loader": "^0.23.0",
"file-loader": "^0.8.4",
"json-loader": "^0.5.4",
"url-loader": "^0.5.7",
"vue-hot-reload-api": "^1.2.0",
"vue-html-loader": "^1.0.0",
"vue-loader": "^8.2.1",
"vue-style-loader": "^1.0.0",
"webpack": "^1.12.2",
"webpack-dev-server": "^1.12.0"
}
}
加上vue-loader 的文档说 es2015 默认启用:
vue-loader 提供了许多很酷的特性:
ES2015 默认开启;
是否有我缺少的步骤或配置?
版本:
- Vue-cli:2.0.3
- npm:3.8.6
- 节点:6.0.0