throttleEarly

Generate leading-edge throttled version of a function.

Alternatives: throttle, throttleEarly.
Similar: throttle, debounce.

function throttleEarly(x, t)
// x: a function
// t: wait time (ms)

const xasyncfn = require('extra-async-function');


var count = 0;
var fn = xasyncfn.throttleEarly(() => ++count, 2500);
setTimeout(fn, 0);
setTimeout(fn, 1000);
setTimeout(fn, 2000);
// `count` incremented after 0s


var count = 0;
var fn = xasyncfn.throttleEarly(() => ++count, 2500);
setTimeout(fn, 0);
setTimeout(fn, 1000);
setTimeout(fn, 2000);
setTimeout(fn, 3000);
setTimeout(fn, 4000);
// `count` incremented after 0s
// `count` incremented after 3s

References

• throttle: Underscore.js documentation
• Debouncing and Throttling Explained Through Examples by David Corbacho
• throttleit package by @component
• throttle-debounce package by Ivan Nikolić