webpack.config.js

/**
 * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */

'use strict';

/* eslint-env node */

const path = require('path');
const webpack = require('webpack');
const { bundler, styles } = require('@ckeditor/ckeditor5-dev-utils');
const CKEditorWebpackPlugin = require('@ckeditor/ckeditor5-dev-webpack-plugin');
const TerserPlugin = require('terser-webpack-plugin');

module.exports = {
  devtool: 'source-map',
  performance: { hints: false },

  entry: path.resolve(__dirname, 'src', 'ckeditor.js'),

  output: {
    library: 'ClassicEditor',

    path: path.resolve(__dirname, 'build'),
    filename: 'ckeditor.js',
    libraryTarget: 'umd',
    libraryExport: 'default'
  },

  optimization: {
    minimizer: [
      new TerserPlugin({
        sourceMap: false,
        terserOptions: {
          output: {
            comments: /^!/
          }
        },
        extractComments: false
      })
    ]
  },

  plugins: [
    new CKEditorWebpackPlugin({
      language: 'en',
      additionalLanguages: [],
    }),
    new webpack.BannerPlugin({
      banner: bundler.getLicenseBanner(),
      raw: true
    })
  ],

  module: {
    rules: [
      {
        test: /\.svg$/,
        use: ['raw-loader']
      },
      {
        test: /\.css$/,
        use: [
          {
            loader: 'style-loader',
            options: {
              injectType: 'singletonStyleTag',
              attributes: {
                'data-cke': true
              }
            }
          },
          {
            loader: 'postcss-loader',
            options: styles.getPostCssConfig({
              themeImporter: {
                themePath: require.resolve('@ckeditor/ckeditor5-theme-lark')
              },
              minify: true
            })
          }
        ]
      }
    ]
  }
};