Function charRange

charRange(firstChar: string, lastChar: string): Generator<string>
Creates a generator that yields all characters between two specified characters (inclusive).
Parameters
- firstChar: string
  The starting character of the range
- lastChar: string
  The ending character of the range
Returns Generator<string>
Yields
Each character in the range, from firstChar to lastChar
Example
```
// Generate all lowercase letters from 'a' to 'e'
const letters = [...charRange('a', 'e')]
// Result: ['a', 'b', 'c', 'd', 'e']
```
Example
```
// Generate digits from '0' to '9'
const digits = [...charRange('0', '9')]
// Result: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
```
- Defined in generator/src/char-range.ts:19