Function set

lib/internal/event_target.js:1146–1166

(value)

  });

  function set(value) {
    validateThisInternalField(this, kHandlers, 'EventTarget');
    let wrappedHandler = this[kHandlers]?.get(event);
    if (wrappedHandler) {
      if (typeof wrappedHandler.handler === 'function') {
        this[kEvents].get(event).size--;
        const size = this[kEvents].get(event).size;
        this[kRemoveListener](size, event, wrappedHandler.handler, false);
      }
      wrappedHandler.handler = value;
      if (typeof wrappedHandler.handler === 'function') {
        this[kEvents].get(event).size++;
        const size = this[kEvents].get(event).size;
        this[kNewListener](size, event, value, false, false, false, false);
      }
    } else {
      wrappedHandler = makeEventHandler(value);
      this.addEventListener(event, wrappedHandler);
    }
    this[kHandlers].set(event, wrappedHandler);
  }
  ObjectDefineProperty(set, 'name', {
    __proto__: null,
    value: `set ${propName}`,