signal-desktop/ts/util/timer.ts
2020-01-08 09:44:54 -08:00

23 lines
475 B
TypeScript

import { padStart } from 'lodash';
export function getIncrement(length: number): number {
if (length < 0) {
return 1000;
}
return Math.ceil(length / 12);
}
export function getTimerBucket(expiration: number, length: number): string {
const delta = expiration - Date.now();
if (delta < 0) {
return '00';
}
if (delta > length) {
return '60';
}
const bucket = Math.round((delta / length) * 12);
return padStart(String(bucket * 5), 2, '0');
}