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@libshin/interval

v1.0.4

Published

Create flexible intervals

Downloads

6

Readme

TL;DR

Create flexible intervals

How to use

import interval from "@libshin/interval";

// interval(fn: () => ?number, initialTTL: number, options)
const timer = interval(fn, 500);

// The timer is defined

timer.start(); // Start it (1st call of fn in 500ms)
timer.startNow(); // Start timer and immediately calls fn
timer.stop(); // When the timer is running
timer.restart(); // Stops timer and calls start()
timer.restartNow(); // Stops timer and calls startNow()

Why flexible?

The main difference with regular setTimeout in JS is that if the callback function fn returns a number, it will be the new time interval before the next call of fn.

import interval from "@libshin/interval";

const fn = () => {
  console.log('fn is called')
  return 1500;
}

const timer = interval(fn, 500);

timer.start()

> "fn is called" // after 500ms
> "fn is called" // after 1500ms
> "fn is called" // after 1500ms
> "fn is called" // after 1500ms
...

Furthermore, start and restart can take a initial ttl:

import interval from "@libshin/interval";

const fn = () => {
  console.log('fn is called')
}

const timer = interval(fn, 500);

timer.start(1500)

> "fn is called" // after 1500ms
> "fn is called" // after 500ms
> "fn is called" // after 500ms
> "fn is called" // after 500ms
...

Options

| Field | Value | Default | Description | | -------------- | --------------- | --------------- | ------------------------------------------------------------------------------------------------ | | ignoreErrors | boolean | true | If set to true, when the function fn fails, the timer will continue, otherwise, it will stop | | errorCb | error => void | console.error | Function that is called when function fn fails if ignoreErrors is set to true |