17 lines
498 B
JavaScript
17 lines
498 B
JavaScript
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import Emitter from 'tiny-emitter';
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/**
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* Extend given object with emitter functions `on`, `off`, `once`, `emit`
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* @param {Object} obj
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* @return {Object} obj
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*/
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export function mixin(obj) {
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// create event emitter
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var emitter = new Emitter(); // bind methods to obj (we don't want to expose the emitter.e Array...)
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obj.on = emitter.on.bind(emitter);
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obj.off = emitter.off.bind(emitter);
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obj.once = emitter.once.bind(emitter);
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obj.emit = emitter.emit.bind(emitter);
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return obj;
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}
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