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an-parubets/EventEmitterSubscribe.js

Last active December 21, 2019 15:42
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EventEmitter
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EventEmitterSubscribe.js
/**
* @param {string} eventName
* @param {Function} callback
*/
subscribe(eventName, callback) {
!this.events[eventName] && (this.events[eventName] = []);
this.events[eventName].push(callback);
}
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