Function parseDimensionParts

packages/cli/src/linter/model/spec.ts:149–155

(raw: string)

 * Returns null for non-dimension strings (bare numbers, keywords like `auto`).
 */
export function parseDimensionParts(raw: string): { value: number; unit: string } | null {
  if (typeof raw !== 'string') return null;
  const match = raw.match(/^(-?\d*\.?\d+)([a-zA-Z%]+)$/);
  if (!match) return null;
  const value = parseFloat(match[1]!);
  return Number.isNaN(value) ? null : { value, unit: match[2]! };
}

/**
 * Validate a hex color string. Accepts #RGB, #RGBA, #RRGGBB, and #RRGGBBAA.