webpack dev server onCompile hook

gistfile1.txt

// unique port to this dev server
const port = 3000

const webpackConfig = {
    entry: '...',
    output: '...',
    devServer: {
        host: '0.0.0.0',
        public: `localhost:${port}`,
        disableHostCheck: true,
        port,
        onListening: server => {
            server.compiler.hooks.done.tap('done', () => {
                setImmediate(() => {
                    process.send && process.send('ready');
                });
            });
        }
    },
    ...
}