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webpack.config.js
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// entry -> output
const devMode = process.env.NODE_ENV !== 'production';
const path = require('path');
const webpack = require('webpack');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
process.env.NODE_ENV = process.env.NODE_ENV || 'development';
if (process.env.NODE_ENV === 'test') {
require('dotenv').config({ path: './.env.test' });
} else if (process.env.NODE_ENV === 'development') {
require('dotenv').config({ path: './.env.development' });
}
module.exports = (env) => {
const isProduction = env === 'production';
console.log('env', env);
return {
mode: devMode ? 'development' : 'production',
entry: {
app: [ '@babel/polyfill', './src/app.js' ]
},
output: {
path: path.join(__dirname, 'public', 'dist'),
filename: 'bundle.js'
},
target: 'web',
module: {
rules: [
{
use: {
loader: 'babel-loader'
},
test: /\.js$/,
include: [ path.resolve(__dirname, 'src') ],
exclude: /node_modules/
},
{
test: /\.s?css?/,
use: [
'style-loader',
MiniCssExtractPlugin.loader,
{
loader: 'css-loader',
options: {
sourceMap: true
}
},
{
loader: 'sass-loader',
options: {
sourceMap: true
}
}
]
}
]
},
plugins: [
new MiniCssExtractPlugin({
filename: 'styles.css'
}),
new webpack.DefinePlugin({
'process.env.API_KEY': JSON.stringify(process.env.API_KEY)
})
],
devtool: isProduction ? 'source-map' : 'inline-source-map',
devServer: {
contentBase: path.join(__dirname, 'public'),
historyApiFallback: true,
publicPath: '/dist/'
}
};
};