55 lines
1.6 KiB
JavaScript
55 lines
1.6 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule MissingNativeEventEmitterShim
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* @flow
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*/
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'use strict';
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const EmitterSubscription = require('EmitterSubscription');
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const EventEmitter = require('EventEmitter');
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const invariant = require('fbjs/lib/invariant');
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class MissingNativeEventEmitterShim extends EventEmitter {
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isAvailable: boolean = false;
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_nativeModuleName: string;
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_nativeEventEmitterName: string;
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constructor(nativeModuleName: string, nativeEventEmitterName: string) {
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super(null);
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this._nativeModuleName = nativeModuleName;
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this._nativeEventEmitterName = nativeEventEmitterName;
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}
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throwMissingNativeModule() {
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invariant(
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false,
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`Cannot use '${this._nativeEventEmitterName}' module when ` +
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`native '${this._nativeModuleName}' is not included in the build. ` +
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`Either include it, or check '${this._nativeEventEmitterName}'.isAvailable ` +
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'before calling any methods.'
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);
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}
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// EventEmitter
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addListener(eventType: string, listener: Function, context: ?Object): EmitterSubscription {
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this.throwMissingNativeModule();
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}
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removeAllListeners(eventType: string) {
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this.throwMissingNativeModule();
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}
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removeSubscription(subscription: EmitterSubscription) {
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this.throwMissingNativeModule();
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}
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}
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module.exports = MissingNativeEventEmitterShim;
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