RunKit + npm: rpc-prototype

const rpt = require("rpc-prototype") let alice = new rpt.RPC(); let bob = new rpt.RPC(); alice.pipe(bob).pipe(alice); alice.then(result => { console.log('Alice:', result); }); bob.then(result => { console.log('Bob:', result); }); alice.on('ping', (resolve, reject, data) => { console.log('Alice:', data); resolve(data); // Sends response with 'Hello World!' }); bob.exec('ping', 'Hello World!').then(result => { console.log('Bob:', result); // Prints 'Hello World!' }).catch(error => { throw error; }); bob.end('End of bob');