45 lines
1.1 KiB
TypeScript
45 lines
1.1 KiB
TypeScript
export default class Utilities {
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/**
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*
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* @param time (s)
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* @returns
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*/
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public static delay(time: number): Promise<any> {
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return new Promise((resolve) => setTimeout(resolve, time * 1000));
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}
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/**
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*@param predicate
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* @param time (s)
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* @returns
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*/
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public static async waitUntil(predicate: () => boolean, timeCheck = 0.01) {
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while (!predicate()) {
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await this.delay(timeCheck);
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}
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}
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public static getJson(json: string): any {
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try {
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return JSON.parse(json);
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} catch (error) {
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return false;
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}
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}
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public static weightedRandom<T>(items: T[], weights: number[]): T {
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let i = 0;
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const weightsClone = [...weights];
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for (i = 1; i < weightsClone.length; i++) {
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weightsClone[i] += weights[i - 1];
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}
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let random = Math.random() * weightsClone[weightsClone.length - 1];
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for (i = 0; i < weightsClone.length; i++) {
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if (weightsClone[i] > random) break;
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}
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return items[i];
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}
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}
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