ui/webpack.config.js at master · decentraland/ui · GitHub

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/*eslint-env node*/
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const postcssPresetEnv = require('postcss-preset-env')
const postcssCopy = require('postcss-copy')
const postcss = require('postcss')
const path = require('path')

module.exports = {
  mode: 'production',
  entry: './src/index.ts',
  output: {
    path: path.resolve(__dirname, 'lib'),
    filename: 'index.js',
    library: {
      name: 'decentralandUI',
      type: 'umd'
    }
  },
  resolve: {
    extensions: ['.ts', '.tsx', '.js', '.jsx']
  },
  externals: {
    react: {
      commonjs: 'react',
      commonjs2: 'react',
      amd: 'react',
      root: 'React'
    },
    'react-dom': {
      commonjs: 'react-dom',
      commonjs2: 'react-dom',
      amd: 'react-dom',
      root: 'ReactDOM'
    }
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        exclude: /node_modules/,
        use: [
          MiniCssExtractPlugin.loader,
          {
            loader: 'css-loader',
            options: {
              importLoaders: 1,
              url: false // Let Webpack handle assets via rules, not css-loader
            }
          },
          {
            loader: 'postcss-loader',
            options: {
              postcssOptions: {
                plugins: [
                  postcssPresetEnv({
                    stage: 4
                  })
                ]
              }
            }
          }
        ]
      },
      {
        test: /\.css$/,
        include: /node_modules/,
        use: [
          MiniCssExtractPlugin.loader,
          {
            loader: 'css-loader',
            options: {
              url: false // Don't process URLs in node_modules CSS
            }
          }
        ]
      },
      {
        test: /\.tsx?$/,
        use: ['ts-loader']
      },
      {
        test: /\.(woff|woff2|eot|ttf|otf)$/,
        type: 'asset/resource'
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        type: 'asset',
        parser: {
          dataUrlCondition: {
            maxSize: 8192
          }
        }
      }
    ]
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: 'styles.css'
    }),
    new CopyWebpackPlugin({
      patterns: [{
        from: 'src/themes/alternative',
        to: './',
        // transform themes file because now they contain a relative path to the assets
        transform: (content, path) => {
            return postcss([
              postcssPresetEnv({
                stage: 4
              }),
              postcssCopy({
                dest: './lib/'
              })
            ])
            .process(content, { from: path })
            .then(result => {
              return result.css
            })
        }
      }]
    })
  ]
}