color-string

const colorString: ColorString;

type ColorString = {
    get: {
        (color: string): { model: Model; value: number[] } | null;
        rgb: (color: string) => number[] | null;
        hsl: (color: string) => number[] | null;
        hwb: (color: string) => number[] | null;
    };
    to: {
        hex: (r: number, g: number, b: number, a?: number) => string | null;
        rgb: {
            (r: number, g: number, b: number, a?: number): string | null;
            percent: (r: number, g: number, b: number, a?: number) => string | null;
        };
        keyword: (r: number, g: number, b: number, a?: number) => string | null;
        hsl: (h: number, s: number, l: number, a?: number) => string | null;
        hwb: (h: number, w: number, b: number, a?: number) => string | null;
    };
};

type Model = 'rgb' | 'hsl' | 'hwb';