Method constructor

ch2-patterns/rpc-worker.js:2–7

(path)

class RpcWorker {
  constructor(path) {
    this.next_command_id = 0;
    this.in_flight_commands = new Map();
    this.worker = new Worker(path);
    this.worker.onmessage = this.onMessageHandler.bind(this);
  }
// THIS LINE SHOULD NOT APPEAR IN PRINT
  onMessageHandler(msg) {
    const { result, error, id } = msg.data;