webpack.config.js

module.exports = {
    entry: {
        'exampleCore': './src/example-core',
        'examplePlugin': './src/example-plugin',
    },
    externals: {
        './example-core': {
            amd: 'exampleCore',
            commonjs: 'exampleCore',
            commonjs2: 'exampleCore',
            root: ['namespace', 'exampleCore'],
        }
    },
    output: {
        library: `namespace`,
        libraryTarget: 'umd',
        filename: `[name].js`,
    },
};