Function isPromiseGuard

libs/state/selections/src/lib/utils/guards.ts:3–10

(value: unknown)

import { OperatorFunction } from 'rxjs';

export function isPromiseGuard<T>(value: unknown): value is Promise<T> {
  return (
    value !== null &&
    value !== undefined &&
    typeof (<any>value).subscribe !== 'function' &&
    typeof (value as any).then === 'function'
  );
}

export function isOperateFnArrayGuard<T, R = T>(
  op: any[],