迁移到Webpack 2，babel loader错误

Question

我有js loader的webpack配置

   module: {
    loaders: [
        {
            test: /\.js?$/,
            loader: 'babel-loader',
            exclude: /node_modules/,
            query: {
                "presets": ["es2015", "stage-0", "react"],
                "plugins": ['transform-runtime']
            }
        },

它有效，但当我尝试将加载器更改为规则时，它不起作用，我得到了这个错误：

ERROR in ./src/index.js
Module parse failed: D:\src\index.js Unexpected token (16:4)
You may need an appropriate loader to handle this file type.
|
| render(
|     <Router history={browserHistory}>
|         <Route path='/' component={App}>
|             <IndexRoute component={Home} />

Answer 1

The syntax for rules is not the same as the syntax for loaders.在你的情况下看起来应该是这样的：

module: {
    rules: [
        {
            test: /\.js?$/,
            loader: 'babel-loader',
            exclude: /node_modules/,
            options: {
                presets: ["es2015", "stage-0", "react"],
                plugins: ['transform-runtime']
            }
        }
    ]
}