webpack处理js和css模块化导入导出示例：

小强有个dream2024-05-14 7:00

webpack默认并不能处理js模块化的导入和导出,依赖于ts-loader和babel-loader

javascript 复制代码

webpack.config,js
module.exports = {
    entry: './src/index.ts',
    output: {
        filename: 'main.js',
    },
    mode: 'development', // 或者 'production'
    module: {
        rules: [
            {
                test: /\.ts/,
                exclude: /(node_modules)/,
                use: 'ts-loader'
            }
    ]
    },
    resolve: {
        // 确保webpack可以找到.ts和.tsx文件
        extensions: ['.tsx', '.ts', '.js']
    }
}

javascript 复制代码

src/index.ts
import {util} from './b'

let zhang: string = util()

zhang += 'zhang'

src/a.ts
export const util = () => {
    return 'util'
}

webpack默认并不能处理css模块化的导入和导出,依赖于css-loader

javascript 复制代码

webpack.config.js
module.exports = {
    entry: './src/index.js',
    output: {
        filename: 'main.js',
    },
    mode: 'development', // 或者 'production'
    module: {
        rules: [
            {
                test: /\.css/,
                exclude: /(node_modules)/,
                use: ['style-loader', 'css-loader']
            }
    ]
    },
}

javascript 复制代码

src/index.js
import './style.css'

src/style.css
@import './module.css';
.body div {
  background-color: red;
}


src/module.css
body {
    font-size: 28px;
}