我正在尝试在项目中使用ES6 npm包(在本例中称为游戏系统),并使用webpack(和babel)构建它无法在外部依赖项中构建任何ES6代码,为什么会这样?如果我有一个相对路径相同的代码,它可以正常工作。
应用代码:
'use strict';
import World from 'gamesystem'; // Breaks
//import World from '../node_modules/gamesystem'; // Also breaks
//import World from '../gamesystem'; // Works (copied the same directory gamesystem outside the node_modules directory)
let world = new World();
错误:
ERROR in ./~/gamesystem/World.js
Module parse failed: /home/user/project/node_modules/gamesystem/World.js Line 3: Unexpected token
You may need an appropriate loader to handle this file type.
| 'use strict';
|
| import System from './System';
|
| export default class World {
@ ./src/app.js 3:18-39
Webpack配置:
'use strict';
// Modules
let WebpackNotifierPlugin = require('webpack-notifier');
let HtmlWebpackPlugin = require('html-webpack-plugin');
let config = {
entry: {
app: __dirname + '/../src/app.js'
},
devtool: 'source-map',
devServer: {
stats: {
modules: false,
cached: false,
colors: true,
chunk: false
},
proxy: require('./devProxy')
},
module: {
loaders: [{
test: /\.js$/,
loader: 'babel',
exclude: /node_modules/,
query: {
presets: ['es2015', 'stage-0']
}
},
{
test: /\.css$/,
loader: 'style!css'
},
{
test: /\.html$/,
loader: 'raw'
}]
},
plugins: [
new WebpackNotifierPlugin(),
new HtmlWebpackPlugin({
template: __dirname + '/../src/index.html',
inject: 'body',
minify: false
})
]
};
module.exports = config;
答案 0 :(得分:4)
您明确将node_modules
排除在babel-loader
之外:
exclude: /node_modules/,
如果你想从node_modules
通过babel传递模块,你需要调整一下。您可以考虑明确包含这样的内容:
// be sure to req path
// var path = require('path')
include: [
// Include everything from your app path
path.resolve(__dirname, 'my-app-js-path'),
// Include gamesystem modules
/\bgamesystem\b/,
],