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22 lines
607 B
TypeScript
22 lines
607 B
TypeScript
/**
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* A collection of popular layouts and patterns made with CSS (https://csslayout.io)
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* (c) 2019 - 2021 Nguyen Huu Phuoc <https://twitter.com/nghuuphuoc>
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*/
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type Tuple<T> = [number, T[]];
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function randomItems<T>(arr: T[], count: number): T[] {
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const result = arr.concat().reduce(
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(p, _, __, arr) => {
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const [a, b] = p;
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return (a < count)
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? [a + 1, b.concat(arr.splice(Math.random() * arr.length | 0, 1))]
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: p;
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},
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[0, []] as Tuple<T>
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);
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return (result as Tuple<T>)[1];
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};
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export default randomItems;
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