Function shortestWordLength

shortestWordLength(str: string): number
Finds the length of the shortest word in a string.
Parameters
- str: string
  The input string.
Returns number
Length of the shortest word.
Remarks
- Words are split by whitespace (/\s+/).
- Symbols (punctuation, special chars) are removed using stripSymbols.
- Returns 0 if the string is empty or contains no words.
Example
```
shortestWordLength("js utils kit"); // 2
shortestWordLength("one three five"); // 3
shortestWordLength(""); // 0
```
- Defined in src/string/fn.ts:231