19 lines
541 B
TypeScript
19 lines
541 B
TypeScript
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import type { PickAlgorithm } from './types';
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type Opts = {
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/** Number of iterations until the next item is picked. */
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interval: number,
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};
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/** Picks the next item every `interval` iterations. */
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const linearAlgorithm: PickAlgorithm = (items, index, opts: Opts) => {
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const itemIndex = items ? Math.floor((index + 1) / opts.interval) % items.length : 0;
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const item = items ? items[itemIndex] : undefined;
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const showItem = (index + 1) % opts.interval === 0;
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return showItem ? item : undefined;
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};
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export {
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linearAlgorithm,
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};
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