mauss/src/core/processor/index.js

lightweight, modular, type-safe utilities

const DURATION = 300;
/**
 * Prevent execution of `fn` until `time` has passed
 *
 * @example
 *
 * ```js
 * function update(name) {...} // can also be inlined
 *
 * const search = debounce(update, 500);
 *
 * search('mauss'); // execute after 500ms
 * ```
 */
export function debounce(fn, time = DURATION) {
    let timeout;
    return (...args) => {
        if (timeout)
            clearTimeout(timeout);
        timeout = setTimeout(() => fn(...args), time);
    };
}
/**
 * Immediately execute `fn` and prevent the next execution until after `time`
 *
 * @example
 *
 * ```js
 * function update(name) {...}
 *
 * const onclick = immediate(update, 500);
 * ```
 */
export function immediate(fn, time = DURATION) {
    let timeout;
    return (...args) => {
        if (timeout)
            return;
        fn(...args);
        timeout = setTimeout(() => clearTimeout(timeout), time);
    };
}
/**
 * Prevent executions after the first `fn` until `time` has passed
 *
 * @example
 *
 * ```js
 * function update(name) {...}
 *
 * const search = throttle(update, 500);
 *
 * search('mauss'); // execute every 500ms
 * ```
 */
export function throttle(fn, time = DURATION) {
    let wait = false;
    return (...args) => {
        if (wait)
            return;
        fn(...args), (wait = true);
        setTimeout(() => (wait = false), time);
    };
}