31 lines
796 B
TypeScript
31 lines
796 B
TypeScript
// @ts-check
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module.exports = debounce;
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/**
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* @param {() => void} cb
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* @param {number} timeout
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* @param {DebounceOptions} [opts]
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*
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* @typedef DebounceOptions
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* @property {number} [max]
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*/
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function debounce(cb, timeout, opts = {}) {
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if (timeout < 10) timeout = 10;
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let max = opts.max || 10;
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if (max < timeout) max = timeout;
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let minTimer;
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let maxTimer;
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return trigger;
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function trigger() {
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if (max > timeout && !maxTimer) maxTimer = setTimeout(done, max);
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if (minTimer) clearTimeout(minTimer);
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minTimer = setTimeout(done, timeout);
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}
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function done() {
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if (maxTimer) maxTimer = void clearTimeout(maxTimer);
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if (minTimer) minTimer = void clearTimeout(minTimer);
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cb();
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}
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} |