ui/web/src/composables/Utils.ts

   1 export default class Utils {
   2   // STATE
   3   public static isUndefined(value: unknown): boolean {
   4     return typeof value === 'undefined';
   5   }
   6
   7   public static ifUndefined<T>(value: T | undefined, isValue: T): T {
   8     if (Utils.isUndefined(value) === true) return isValue;
   9     return value as T;
  10   }
  11
  12   public static isIterable<T>(obj: T): boolean {
  13     if (obj === null || obj === undefined) {
  14       return false;
  15     }
  16     return typeof (obj as any)[Symbol.iterator] === 'function';
  17   }
  18
  19   // public static ifNotIterableDo<T>(obj: T, cb: () => void): void {
  20   //   if (this.isIterable(obj) === false) cb();
  21   // }
  22
  23   public static async promiseWithTimeout<T>(
  24     promise: Promise<T>,
  25     timeoutMs: number,
  26     timeoutError: Error,
  27     timeoutCallback: () => void = () => {
  28       /* This is intentional */
  29     }
  30   ): Promise<T> {
  31     // Create a timeout promise that rejects in timeout milliseconds
  32     const timeoutPromise = new Promise<never>((_, reject) => {
  33       setTimeout(() => {
  34         timeoutCallback();
  35         reject(timeoutError);
  36       }, timeoutMs);
  37     });
  38
  39     // Returns a race between timeout promise and the passed promise
  40     return Promise.race<T>([promise, timeoutPromise]);
  41   }
  42
  43   // FUNCTIONAL
  44   // public static compose<T>(...fns: ((arg: T) => T)[]): (x: T) => T {
  45   //   return (x: T) => fns.reduceRight((y, fn) => fn(y), x);
  46   // }
  47 }