Function padStart

padStart(string: string, targetLength: number, padString?: string): string
This function mirrors the padStart function from the JavaScript Standard String object. It operates on grapheme clusters instead of UTF-16 code units.

Pads the string with another string (multiple times, if needed) until the result is targetLength grapheme clusters long. The padding is applied at the start.
Parameters
- string: string
  String to add padding to
- targetLength: number
  Length of the result, in grapheme clusters. If it is less than or equal to stringLength(string), the string is returned as is
- OptionalpadString: string
  The string to pad with, truncated to fit targetLength. Default is " "
Returns string
String with the appropriate padding at the start

Throws
RangeError when targetLength exceeds MAX_PADDING_LENGTH and padding would actually be added. This ceiling is lower than native's; see MAX_PADDING_LENGTH.
- Defined in lib/platform-bible-utils/src/string-util.ts:238