export namespace Color {
  export function isValidHex(hex?: string): hex is string {
    if (!hex) return false
    return /^#[0-9a-fA-F]{6}$/.test(hex)
  }

  export function hexToRgb(hex: string): { r: number; g: number; b: number } {
    const r = parseInt(hex.slice(1, 3), 16)
    const g = parseInt(hex.slice(3, 5), 16)
    const b = parseInt(hex.slice(5, 7), 16)
    return { r, g, b }
  }

  export function hexToAnsiBold(hex?: string): string | undefined {
    if (!isValidHex(hex)) return undefined
    const { r, g, b } = hexToRgb(hex)
    return `\x1b[38;2;${r};${g};${b}m\x1b[1m`
  }
}