34 lines
732 B
JavaScript
34 lines
732 B
JavaScript
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'use strict'
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class EmitterWrapper {
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constructor (emitter) {
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this.listeners = {}
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this.emitter = emitter
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}
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addListener (event, listener) {
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this.emitter.addListener(event, listener)
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this.listeners[event] = this.listeners[event] || []
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this.listeners[event].push(listener)
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return this
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}
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on (event, listener) {
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return this.addListener(event, listener)
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}
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removeAllListeners (event) {
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const events = event ? [event] : Object.keys(this.listeners)
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events.forEach((event) => {
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this.listeners[event].forEach((listener) => {
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this.emitter.removeListener(event, listener)
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})
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delete this.listeners[event]
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})
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return this
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}
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}
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module.exports = EmitterWrapper
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