Method addCallback

javascript/selenium-webdriver/bidi/domain.js:81–84

* Subscribes `handler` to a BiDi event. All the actual subscription-lifecycle * work — remote subscribe/unsubscribe, per-subscription bookkeeping — lives on * the connection itself (see Index#addCallback in bidi/index.js); Domain only * adds the one thing the connection can't do on its own:

(descriptor, handler)

   *   A handle for this subscription — call `unsubscribe()` to stop receiving the event.
   */
  async addCallback(descriptor, handler) {
    const dispatch = descriptor.type === undefined ? handler : (params) => handler(descriptor.type.fromWire(params))
    return this.#bidi.addCallback(descriptor.method, dispatch)
  }
}

module.exports = { Domain, event, DOMAIN_TOKEN }