molstar
Version:
A comprehensive macromolecular library.
42 lines (41 loc) • 1.33 kB
JavaScript
/**
* Copyright (c) 2017 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author David Sehnal <david.sehnal@gmail.com>
*/
const now = (function () {
if (typeof window !== 'undefined' && window.performance) {
const perf = window.performance;
return () => perf.now();
}
else if (typeof process !== 'undefined' && process.hrtime !== 'undefined' && typeof process.hrtime === 'function') {
return () => {
const t = process.hrtime();
return t[0] * 1000 + t[1] / 1000000;
};
}
else if (Date.now) {
return () => Date.now();
}
else {
return () => +new Date();
}
}());
function formatTimespan(t, includeMsZeroes = true) {
if (isNaN(t))
return 'n/a';
const h = Math.floor(t / (60 * 60 * 1000)), m = Math.floor(t / (60 * 1000) % 60), s = Math.floor(t / 1000 % 60);
let ms = Math.floor(t % 1000).toString();
while (ms.length < 3)
ms = '0' + ms;
while (!includeMsZeroes && ms.length > 1 && ms[ms.length - 1] === '0')
ms = ms.substr(0, ms.length - 1);
if (h > 0)
return `${h}h${m}m${s}.${ms}s`;
if (m > 0)
return `${m}m${s}.${ms}s`;
if (s > 0)
return `${s}.${ms}s`;
return `${t.toFixed(0)}ms`;
}
export { now, formatTimespan };