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webpack.config.js
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webpack.config.js
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const { resolve } = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = function (env) {
// Check if it is for prod build
const isProd = env === 'prod';
// Default config values for development
let entryMain = [
'webpack-dev-server/client?http://localhost:8080',
'./index.js'
];
let outputFolder = 'dist';
let plugins = [
new webpack.NamedModulesPlugin(),
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor',
filename: 'vendor.bundle.js',
minChunks: function (module) {
return module.context && module.context.indexOf('node_modules') !== -1;
}
}),
new HtmlWebpackPlugin({
template: resolve(__dirname, 'src/index.html'), // eslint-disable-line no-undef
filename: 'index.html',
inject: 'body'
})
];
let outputFileName = 'bundle';
// Change config values if it is for prod
if (isProd) {
entryMain = [
'./index.js'
];
outputFolder = 'build';
outputFileName = '[chunkhash].[name]';
plugins = [
new webpack.LoaderOptionsPlugin({
minimize: true,
debug: false
}),
new webpack.optimize.UglifyJsPlugin({
beautify: false,
mangle: {
screw_ie8: true,
keep_fnames: true
},
compress: {
screw_ie8: true
},
comments: false
}),
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor',
filename: '[chunkhash].[name].js',
minChunks: function (module) {
return module.context && module.context.indexOf('node_modules') !== -1;
}
}),
new HtmlWebpackPlugin({
template: resolve(__dirname, 'src/index.html'), // eslint-disable-line no-undef
filename: 'index.html',
inject: 'body'
})
];
}
// Build configuration object and return
return {
entry: {
main: entryMain
},
output: {
filename: outputFileName + '.js',
path: resolve(__dirname, outputFolder), // eslint-disable-line no-undef
publicPath: '/',
sourceMapFilename: outputFileName + '.map'
},
context: resolve(__dirname, 'src'), // eslint-disable-line no-undef
devtool: !isProd ? 'inline-source-map' : false,
devServer: !isProd ? {
contentBase: resolve(__dirname, outputFolder), // eslint-disable-line no-undef
publicPath: '/',
historyApiFallback: true
} : {},
module: {
rules: [
{ // js loader
test: /\.js$/,
use: [
'babel-loader',
],
exclude: /node_modules/
}
],
},
plugins
};
};