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eventemitter3 のイベントハンドラの return 値で Promise を返せるようにするラッパー
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import EventEmitter from 'eventemitter3'; | |
class PromiseEmitter extends EventEmitter { | |
emit(event, ...args) { | |
let promises = []; | |
this.listeners(event).forEach((listener) => { | |
promises.push(listener(...args)); | |
}); | |
return Promise.all(promises); | |
} | |
} | |
export default PromiseEmitter; |
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