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getify/1.js

Created June 2, 2018 04:09
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waitForEvent(..) -- promisified event listener
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1.js
function waitForEvent(elem,evtName) {
return new Promise(function c(resolve){
elem.addEventListener(evtName,function onEvent(evt){
elem.removeEventListener(evtName,onEvent,false);
resolve(evt);
},false);
});
}
@VivekNayyar
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Why inside a promise?

@IntpLLC
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IntpLLC commented Jun 2, 2018

This may be to free up the call stack in order to have a smoother UI

@third774
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third774 commented Jun 2, 2018 •
edited
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Would be useful for using with async/await

@GbalsaC
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GbalsaC commented Jun 2, 2018

Don't use async/await on this...

@LoicMahieu
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Sindre already did it :)
https://github.com/sindresorhus/p-event

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