webpack4零配置的概念适用于:
entry point(入口点) 默认为 ./src/index1.js
output(输出) 默认为 ./dist/main.js
production(生产) 和 development(开发) 模式 (无需为生产和开发环境创建2个单独的配置)
在项目文件夹(根目录)创建.babelrc的文件来配置Babel:
.babelrc
{
"presets": [
"env"
]
}
为 React 项目配置 webpack 4
安装React
yarn add react react-dom --save-dev
接下来添加 babel-preset-react:
yarn add babel-preset-react --save-dev
在.babelrc中配置预设:
{
"presets": ["env", "react"]
}
还可以配置 babel-loader 来读取 .jsx 文件
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