webpack.config.js

const path = require('path');

module.exports = {
  entry: './index.js',
  mode: 'development',
  externals: [
    {
      '@runtime': {
        root: '@runtime',
        commonjs: '@runtime',
        commonjs2: '@runtime',
        amd: '@runtime'
      },
      '@runtime/Defaults': {
        root: '@runtime/Defaults',
        commonjs: '@runtime/Defaults',
        commonjs2: '@runtime/Defaults',
        amd: '@runtime/Defaults'
      },
      '@runtime/provider': {
        root: '@runtime/provider',
        commonjs: '@runtime/provider',
        commonjs2: '@runtime/provider',
        amd: '@runtime/provider'
      },
      '@runtime/RuleSupport': {
        root: '@runtime/RuleSupport',
        commonjs: '@runtime/RuleSupport',
        commonjs2: '@runtime/RuleSupport',
        amd: '@runtime/RuleSupport'
      },
      '@runtime/rules': {
        root: '@runtime/rules',
        commonjs: '@runtime/rules',
        commonjs2: '@runtime/rules',
        amd: '@runtime/rules'
      },
      '@runtime/osgi': {
        root: '@runtime/osgi',
        commonjs: '@runtime/osgi',
        commonjs2: '@runtime/osgi',
        amd: '@runtime/osgi'
      }
    }
  ],
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'openhab.js',
    library: {
      name: 'openhab',
      type: 'umd'
    },
    globalObject: 'this'
  }
};