Webpack Babel 加载器在导入以 .js 作为文件扩展名的 es6 react 组件时失败。如果文件扩展名更改为 .jsx babel 编译正确。有什么线索吗?
var config = {
entry : {
"login" : PAGE_DIR + '/login/index.js',
"app" : PAGE_DIR + '/app/index.js'
},
output: {
path: BUILD_DIR,
filename: '[name]-bundle.js'
},
module : {
rules : [
{
test : /.(js|jsx)$/,
include : PAGE_DIR,
exclude: [
path.resolve(__dirname, "node_modules"),
],
loaders : ['babel-loader']
}
]
}
};
编辑:
更新下面的日志。
> webpack -d
Hash: 83d5fd2d0c1113e55b32
Version: webpack 2.2.1
Time: 2057ms
Asset Size Chunks Chunk Names
app-bundle.js 2.28 MB 0 [emitted] [big] app
login-bundle.js 1.98 MB 1 [emitted] [big] login
[18] ./~/react-dom/lib/ReactReconciler.js 6.21 kB {0} {1} [built]
[19] ./~/react/lib/React.js 2.69 kB {0} {1} [built]
[31] ./~/react/react.js 56 bytes {0} {1} [built]
[80] ./~/react-dom/index.js 59 bytes {0} {1} [built]
[109] ./~/react-dom/lib/ReactDOM.js 5.14 kB {0} {1} [built]
[179] ./~/redux/es/index.js 1.08 kB {0} [built]
[192] ./app/state/store.js 330 bytes {0} [built]
[193] ./~/react-redux/es/index.js 194 bytes {0} [built]
[196] ./app/state/reducer.js 766 bytes {0} [built]
[209] ./~/react-redux/es/connect/connect.js 5.34 kB {0} [built]
[215] ./~/react-redux/es/utils/Subscription.js 2.59 kB {0} [built]
[216] ./~/react-redux/es/utils/shallowEqual.js 677 bytes {0} [built]
[220] ./~/redux-logger/lib/index.js 4.45 kB {0} [built]
[228] ./app/pages/app/index.jsx 694 bytes {0} [built]
[229] ./app/pages/login/index.jsx 2.33 kB {1} [built]
+ 215 hidden modules
ERROR in ./app/components/login.jsx
Module parse failed: /Users/vsank1/Documents/workspace/registration/kudumbayogam/app/components/login.jsx Unexpected token (15:6)
You may need an appropriate loader to handle this file type.
| render () {
| return (
| <form className="login">
| <input type="email" name="emailid" placeholder="Email ID" onChange={this.changeEmailId.bind(this)} /><br/>
| <input type="password" name="password" placeholder="Password" onChange={this.changePassword.bind(this)} /><br/>
@ ./app/pages/login/index.jsx 11:13-50
ERROR in ./app/components/app.jsx
Module parse failed: /Users/vsank1/Documents/workspace/registration/kudumbayogam/app/components/app.jsx Unexpected token (30:3)
You may need an appropriate loader to handle this file type.
|
| return (
| <div className='row'>
| <div className='twelve columns'>
| <a href='#logout' className='logout button-link'>Logout</a>
@ ./app/pages/app/index.jsx 15:11-46
我终于想通了。我通过添加包含文件夹犯了一个错误。我的组件位于包含文件夹之外,所有这些组件都没有使用加载程序进行分析。我发现 webpack 只解析与测试模式匹配的文件,并且也在包含文件夹中。
var webpack = require('webpack');
var path = require('path');
var BUILD_DIR = path.resolve(__dirname, 'client/assets/js');
var APP_DIR = path.resolve(__dirname, 'app/');
var config = {
entry : {
"login" : APP_DIR + '/pages/login/index.js',
"app" : APP_DIR + '/pages/app/index.js'
},
output: {
path: BUILD_DIR,
filename: '[name]-bundle.js'
},
module : {
loaders : [
{
test : /.jsx?/,
include : APP_DIR,
loader : 'babel-loader'
}
]
}
};
module.exports = config;
您可能需要在 webpack 配置中安装配置预设,例如
module : {
rules : [
{
test : /.(js|jsx)$/,
include : PAGE_DIR,
exclude: [
path.resolve(__dirname, "node_modules"),
],
loaders : ['babel-loader'],
query: {
presets: ['react','es2015', 'stage-0']
}
}
]
}
首先使用
npm install -S babel-preset-es2015 babel-preset-react babel-preset-stage-0