text: const webpack = require('webpack');
  const path = require('path');
  const TerserPlugin = require('terser-webpack-plugin');
  
  const pkg = require('./package.json');
  
  const plugins = [
  	// 로더들에게 옵션을 넣어주는 플러그인
  	new webpack.LoaderOptionsPlugin({
  		minimize: true,
  	}),
  ];
  module.exports = {
  	mode: 'production',
  	entry: {
  		[pkg.name]: path.resolve(__dirname, 'src/components/canvas/index.tsx'),
  		[`${pkg.name}.min`]: path.resolve(__dirname, 'src/components/canvas/index.tsx'),
  	},
  	output: {
  		// entry에 존재하는 app.js, vendor.js로 뽑혀 나온다.
  		path: path.resolve(__dirname, 'dist'),
  		filename: '[name].js',
  		library: `${pkg.name}.js`,
  		libraryTarget: 'umd',
  		umdNamedDefine: true,
  		publicPath: './',
  	},
  	module: {
  		rules: [
  			{
  				test: /\.(js|jsx|tsx|ts)$/,
  				loader: 'babel-loader?cacheDirectory',
  				include: path.resolve(__dirname, 'src'),
  				options: {
  					presets: [
  						['@babel/preset-env', { modules: false }],
  						'@babel/preset-react',
  						'@babel/preset-typescript',
  					],
  					plugins: [
  						'@babel/plugin-transform-runtime',
  						'@babel/plugin-syntax-dynamic-import',
  						['@babel/plugin-proposal-decorators', { legacy: true }],
  						'@babel/plugin-syntax-async-generators',
  						['@babel/plugin-proposal-class-properties', { loose: false }],
  						'@babel/plugin-proposal-object-rest-spread',
  						'dynamic-import-webpack',
  					],
  				},
  				exclude: /node_modules/,
  			},
  			{
  				test: /\.(css|less)$/,
  				use: ['style-loader', 'css-loader', 'less-loader'],
  			},
  			{
  				test: /\.(ico|png|jpg|jpeg|gif|svg|woff|woff2|ttf|eot)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
  				loader: 'url-loader',
  				options: {
  					publicPath: './',
  					name: 'fonts/[hash].[ext]',
  					limit: 10000,
  				},
  			},
  		],
  	},
  	resolve: {
  		// Add `.ts` and `.tsx` as a resolvable extension.
  		extensions: ['.ts', '.tsx', '.js', 'jsx'],
  	},
  	optimization: {
  		minimizer: [
  			// we specify a custom UglifyJsPlugin here to get source maps in production
  			new TerserPlugin({
  				include: /\.min\.js$/,
  				cache: true,
  				parallel: true,
  				terserOptions: {
  					warnings: false,
  					compress: {
  						warnings: false,
  						unused: true, // tree shaking(export된 모듈 중 사용하지 않는 모듈은 포함하지않음)
  					},
  					ecma: 6,
  					mangle: true,
  					unused: true,
  				},
  				sourceMap: true,
  			}),
  		],
  	},
  	plugins,
  };
  