Function hslFromCSSString

hslFromCSSString(src: string): HSLColor
Parses a CSS HSL color string into an HSLColor object.

Supports both comma and space syntax, as well as both hsl() and hsla() formats:
- hsl(120, 100%, 50%)
- hsla(120, 100%, 50%, 0.5)
- hsl(120 100% 50%)
- hsl(120 100% 50% / 0.5)
The function handles:
- Hue values in degrees (0-360, normalized if outside this range)
- Saturation and lightness as percentages (0-100%)
- Optional alpha value (0-1 or 0-100%)
- Both comma-separated and space-separated formats
- Whitespace flexibility according to CSS specifications
Parameters
- src: string
  The CSS HSL color string to parse
Returns HSLColor
The parsed HSL color object

Throws
If the string format is invalid
- Defined in models/hsl/parser.ts:23