no-drift

Reduced drift timeouts and intervals for node.js

Inspired by driftless

Usage

// import any implementation you want
import {
    // default implementation
    setNoDriftInterval,
    setNoDriftTimeout,
    clearNoDrift,

    // setImmediate implementation
    setNoDriftZeroInterval,
    setNoDriftZeroTimeout,
    clearNoDriftZero,

    // worker thread implementation
    setNoDriftWorkerInterval,
    setNoDriftWorkerTimeout,
    clearNoDriftWorker
} from 'no-drift';

//------------------
// similar usage to setTimeout and setInterval
// all implementations have the same usage

setNoDriftTimeout(() => {
    console.log('Hello world 1');
});

setNoDriftTimeout(() => {
    console.log('Hello world 2');
}, 1000);

setNoDriftTimeout((a, b, c) => {
    console.log(a, b, c);
}, 2000, '1', '2', '3');

setNoDriftTimeout("console.log('Hello world 3');", 3000);

// nodrift intervals have the same usage shown above

//------------------
// clearing nodrift

const id = setNoDriftTimeout(() => {
    console.log('clear');
}, 1000);

clearNoDrift(id);

// each implementation has their own pool of IDs
// so import and use the appropriate clearing function

Formulas for timeout times:

r = rate

t = total time

Time left

recurrence relation

d₀ = t

d_n = (1 - r)d_n-1

closed form

d_n = t(1 - r)ⁿ

Current time

recurrence relation

c₀ = 0

c_n = (1 - r)c_n-1 + tr

closed form

c_n = t(1 - (1 - r)ⁿ)

Current wait time

recurrence relation

w₀ = tr

w_n = (1 - r)w_n-1

closed form

w_n = tr(1 - r)ⁿ