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webpack.config.js
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const path = require('path');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
module.exports = {
mode: 'development',
// entry 進入點
entry: ['@babel/polyfill', './src/index.jsx'],
// output 是打包後的檔案產生位置
output: {
// 打包後的檔案名稱
filename: 'bundle.js',
// 指定路徑
path: path.resolve(__dirname, './dist/'),
},
resolve: { extensions: ['.js', '.jsx'] },
module: {
// 有新要轉換語法的地方,都會在這設置
rules: [
{
// 所有 .js 結尾的都經由這個 rules 的 loader 做轉換
test: /.js$/,
use: {
loader: 'babel-loader',
options: {
// 針對不同的副檔名(例如:JSX)會有不同的 Preset
presets: ['@babel/preset-env'],
},
},
},
{
test: /.jsx$/,
use: {
loader: 'babel-loader',
options: {
presets: ['@babel/preset-react', '@babel/preset-env'],
},
},
},
{
test: /\.(scss)$/,
use: [
{
loader: MiniCssExtractPlugin.loader,
},
{
loader: 'css-loader',
options: {
modules: { localIdentName: '[name]__[local]___[hash:base64:5]' },
},
},
{
loader: 'sass-loader',
},
],
},
],
},
plugins: [
new MiniCssExtractPlugin({
filename: './index.css', // 路徑加輸出的 CSS 檔名
}),
],
devServer: {
// 指定 webpack- dev-server 要去讀哪個路徑
// contentBase: './dist',
static: './dist',
// 路徑的部分記得要和上方打包時的 output.path 相同
port: 9000,
},
performance: {
hints: false,
maxEntrypointSize: 512000,
maxAssetSize: 512000,
},
};