如何解决Babel + Webpack 破坏 es6 导入
我开发了一个小型的 Typescript+React 单页 Web 应用程序。我将它与 webpack 捆绑在一起,可以很好地与 ts-loader
或 babel
配合使用。但是,如果我将 "useBuiltIns": "usage"
添加到我的 @babel/preset-env
配置中,webpack 会开始抛出一堆与此相同或类似的警告(均与 ES 导入相关):
WARNING in ./app.tsx 408:134-153
export 'createElement' (imported as 'React') was not found in 'react' (possible exports: __esModule)
WARNING in ./calendar.tsx 909:60-79
export 'DateTime' (imported as 'DateTime') was not found in 'luxon' (possible exports: __esModule)
我的 webpack 配置:
const path = require('path');
module.exports = (env,argv)=>{
return {
entry: path.join(__dirname,'./entry-firebase.tsx'),devtool: 'source-map',module: {
rules: [
{
test: /\.css$/i,use: ["style-loader","css-loader"],},{
test: [/\.tsx?$/,/\.jsx?$/],//exclude: ()=>false,use: {
loader: 'babel-loader',options: {
presets: [
[require("@babel/preset-env"),{
"corejs": { "version":3 },"useBuiltIns": "usage","targets": {
"edge": "17","firefox": "60","chrome": "67","safari": "11.1","ie": "11"
},//modules: false
}],require("@babel/preset-react"),require("@babel/preset-typescript"),],"plugins": [
[require("@babel/plugin-proposal-decorators"),{
"legacy": true
}]
]
}
}
},resolve: {
extensions: ['.tsx','.ts','.js','.jsx'],output: {
filename: 'bundle-compat.js',path: path.resolve(__dirname,'../public')
}
};
Uncaught TypeError: wrappedWellKNownSymbolModule.f is not a function
exports define-well-kNown-symbol.js:9
js es.symbol.iterator.js:5
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