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webpack.config.js
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webpack.config.js
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const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const config = (env, argv) => {
const isProduction = argv.mode === 'production'
return {
entry: isProduction ? path.join(__dirname, './src/export.js') : path.join(__dirname, './src/index.js'),
output: isProduction ? {
path: path.join(__dirname, './build'),
filename: 'index.js',
library: 'custom-header',
libraryTarget: 'umd',
publicPath: '/build/',
umdNamedDefine: true
} : {
path: path.resolve(__dirname, 'build'),
filename: 'bundle.js'
},
module: {
rules: [
{
test: /\.js$/,
use: 'eslint-loader',
exclude: /node_modules/,
enforce: 'pre',
},
{
test: /\.js$/,
use: 'babel-loader',
exclude: /node_modules/,
},
{
test: /\.css$/,
use: [
MiniCssExtractPlugin.loader,
'css-loader'
]
},
{
test: /\.scss$/,
use: [
MiniCssExtractPlugin.loader,
'css-loader',
'sass-loader'
]
},
{
test: /\.svg$/,
use: 'file-loader'
}
],
},
resolve: {
extensions: ['.js', '.jsx'],
},
plugins: [
...(isProduction ? [] : [new HtmlWebpackPlugin({
appMountId: 'root',
filename: '/static/index.html'
}), new MiniCssExtractPlugin(),]),
new CleanWebpackPlugin()
],
externals: isProduction ? {
// Don't bundle react or react-dom
react: 'react',
"react-dom": 'react-dom',
} : {},
devServer: {
contentBase: [
path.join(__dirname, 'public'),
],
watchContentBase: true,
hot: true,
stats: 'errors-only',
disableHostCheck: true,
},
}
}
module.exports = config