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ctjlewis/waitUntil.min.js

Created January 22, 2020 18:24
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Javascript function that waits until a given condition is true. await waitUntil(() => conditionIsTrue(data))
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waitUntil.min.js
window.waitUntil=function(c){function a(b){c()?b():window.requestAnimationFrame(function(){return a(b)})}return new Promise(a)};
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Un-compiled:

function waitUntil (condition) {
    var poll = (resolve) => {
        if(condition()) resolve();
        else window.requestAnimationFrame(
            () => poll(resolve)
        );
    }

    return new Promise(poll);
}

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