78 lines
1.8 KiB
TypeScript
78 lines
1.8 KiB
TypeScript
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/*
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This file is part of TALER
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(C) 2017 GNUnet e.V.
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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/**
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* Cross-platform timers.
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*
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* NodeJS and the browser use slightly different timer API,
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* this abstracts over these differences.
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*/
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/**
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* Cancelable timer.
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*/
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export interface TimerHandle {
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clear(): void;
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}
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class IntervalHandle {
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constructor(public h: any) {
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}
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clear() {
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clearTimeout(this.h);
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}
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}
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class TimeoutHandle {
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constructor(public h: any) {
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}
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clear() {
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clearTimeout(this.h);
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}
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}
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/**
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* Get a performance counter in milliseconds.
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*/
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export let performanceNow = (() => {
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if (typeof "process" !== "undefined") {
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return () => {
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const t = process.hrtime();
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return t[0] * 1e9 + t[1];
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}
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} else if (typeof "performance" !== "undefined") {
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return () => performance.now();
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} else {
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return () => 0;
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}
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})();
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/**
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* Call a function every time the delay given in milliseconds passes.
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*/
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export function every(delayMs: number, callback: () => void): TimerHandle {
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return new IntervalHandle(setInterval(callback, delayMs));
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}
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/**
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* Call a function after the delay given in milliseconds passes.
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*/
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export function after(delayMs: number, callback: () => void): TimerHandle {
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return new TimeoutHandle(setInterval(callback, delayMs));
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}
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