mirror of
https://github.com/logos-messaging/logos-delivery-js.git
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87717981eb
* chore: update noise * update: package.lock * update: @chainsafe/libp2p-gossipsub * rm unwanted libp2p interface deps & bump up libp2p * refactor code for new deps * update: new package.lock * setup prettier, refactor eslint and rm trailing commas * update package.lock * fix build * import type for interface * fix imports for merge * update typedoc exports * add: CustomEvent import * use new libp2p interface * add aegir as dev dep for tests
31 lines
613 B
TypeScript
31 lines
613 B
TypeScript
/**
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* Return pseudo random subset of the input.
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*/
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export function getPseudoRandomSubset<T>(
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values: T[],
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wantedNumber: number
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): T[] {
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if (values.length <= wantedNumber || values.length <= 1) {
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return values;
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}
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return shuffle(values).slice(0, wantedNumber);
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}
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function shuffle<T>(arr: T[]): T[] {
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if (arr.length <= 1) {
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return arr;
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}
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const randInt = (): number => {
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return Math.floor(Math.random() * Math.floor(arr.length));
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};
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for (let i = 0; i < arr.length; i++) {
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const j = randInt();
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const tmp = arr[i];
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arr[i] = arr[j];
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arr[j] = tmp;
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}
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return arr;
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}
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