@tamagui/react-native-web-lite/src/vendor/react-native/emitter/_EmitterSubscription.js

React Native for Web

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 *
 */
'use strict'

import _EventSubscription from './_EventSubscription'

/**
 * EmitterSubscription represents a subscription with listener and context data.
 */
class EmitterSubscription extends _EventSubscription {
  /**
   * @param {EventEmitter} emitter - The event emitter that registered this
   *   subscription
   * @param {EventSubscriptionVendor} subscriber - The subscriber that controls
   *   this subscription
   * @param {function} listener - Function to invoke when the specified event is
   *   emitted
   * @param {*} context - Optional context object to use when invoking the
   *   listener
   */
  constructor(emitter, subscriber, listener, context) {
    super(subscriber)
    this.emitter = emitter
    this.listener = listener
    this.context = context
  }
  /**
   * Removes this subscription from the emitter that registered it.
   * Note: we're overriding the `remove()` method of _EventSubscription here
   * but deliberately not calling `super.remove()` as the responsibility
   * for removing the subscription lies with the EventEmitter.
   */

  remove() {
    this.emitter.removeSubscription(this)
  }
}

export default EmitterSubscription