Function leftPad

leftPad(
    text?: string | null,
    size?: number,
    pad?: string | null,
): string | null | undefined
Returns the left padded string with the given size and string, or original string if no padding is necessary
Parameters
- Optionaltext: string | null
  The source string to inspect
- Optionalsize: number
  The size to pad to
- Optionalpad: string | null
  The target string to fill, default is space
Returns string | null | undefined
the left padded string with the given size and string, or original string if no padding is necessary
Author
David Hsing
Example
```
leftPad(undefined, -1, null);    // undefined
leftPad('', 3, 'z');    // 'zzz'
leftPad('foo', 3, 'z');    // 'foo'
leftPad('foo', 8, 'yz')  = 'yzyzyfoo'
```