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