es-toolkit/dist/compat/function/debounce.js

A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.

'use strict';

Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });

const debounce$1 = require('../../function/debounce.js');

function debounce(func, debounceMs = 0, options = {}) {
    if (typeof options !== 'object') {
        options = {};
    }
    const { leading = false, trailing = true, maxWait } = options;
    const edges = Array(2);
    if (leading) {
        edges[0] = 'leading';
    }
    if (trailing) {
        edges[1] = 'trailing';
    }
    let result = undefined;
    let pendingAt = null;
    const _debounced = debounce$1.debounce(function (...args) {
        result = func.apply(this, args);
        pendingAt = null;
    }, debounceMs, { edges });
    const debounced = function (...args) {
        if (maxWait != null) {
            if (pendingAt === null) {
                pendingAt = Date.now();
            }
            if (Date.now() - pendingAt >= maxWait) {
                result = func.apply(this, args);
                pendingAt = Date.now();
                _debounced.cancel();
                _debounced.schedule();
                return result;
            }
        }
        _debounced.apply(this, args);
        return result;
    };
    const flush = () => {
        _debounced.flush();
        return result;
    };
    debounced.cancel = _debounced.cancel;
    debounced.flush = flush;
    return debounced;
}

exports.debounce = debounce;