Method constructor

src/controller/main.controller.js:21–27

(port, addPortSequence)

class EventCache {
  constructor(port, addPortSequence) {
    this.port = port;
    this.addPortSequence = addPortSequence;
    this.cache = [];
    this.push = this.push.bind(this);
    this.port.onMessage.addListener(this.push);
  }

  push(event) {
    this.cache.push(event);