Function delay

delay(delayMs): Promise<void>
delay some milliseconds and then return valOrFunc

Sample:
```
await xaa.delay(500);
await xaa.delay(500, "Result");
await xaa.delay(500, () => "Result");
```
Parameters
- delayMs: number
  number milliseconds to delay
Returns Promise<void>
valOrFunc or its returned value if it's a function.
- Defined in src/index.ts:116
delay<T>(delayMs, valOrFunc): Promise<T>
Type Parameters
- T = void
Parameters
- delayMs: number
- valOrFunc: T
Returns Promise<T>
- Defined in src/index.ts:117