@terrazzo/token-tools/dist/color.js

Various utilities for token types

import { A98RGB, ColorSpace as ColorJS, HSL, HWB, inGamut, Lab, Lab_D65, LCH, Okhsv, OKLab, OKLCH, P3, parse, ProPhoto, REC_2020, serialize, sRGB, sRGB_Linear, XYZ_D50, XYZ_D65, } from 'colorjs.io/fn';
/** Complete list of CSS Module 4 color spaces */
export const COLOR_SPACE = {
    'a98-rgb': A98RGB,
    'display-p3': P3,
    hsl: HSL,
    hwb: HWB,
    lab: Lab,
    'lab-d65': Lab_D65,
    lch: LCH,
    okhsv: Okhsv,
    oklab: OKLab,
    oklch: OKLCH,
    'prophoto-rgb': ProPhoto,
    rec2020: REC_2020,
    srgb: sRGB,
    'srgb-linear': sRGB_Linear,
    xyz: XYZ_D65,
    'xyz-d50': XYZ_D50,
    'xyz-d65': XYZ_D65,
};
const COLOR_ID_TO_SPACE = {};
for (const s of Object.values(COLOR_SPACE)) {
    ColorJS.register(s);
    COLOR_ID_TO_SPACE[s.id] = s;
    for (const alias of s.aliases ?? []) {
        COLOR_ID_TO_SPACE[alias] = s;
    }
}
/** Parse any color */
export function parseColor(color) {
    const result = parse(color);
    const value = {
        colorSpace: COLOR_ID_TO_SPACE[result.spaceId].cssId,
        components: result.coords,
        alpha: result.alpha ?? 1,
    };
    if (!inGamut(result, 'srgb')) {
        value.hex = serialize(result, { format: 'hex' });
    }
    return value;
}
/** Convert a color token to a Color.js color */
export function tokenToColor(value) {
    const space = COLOR_SPACE[value.colorSpace];
    if (!space) {
        throw new Error(`Invalid color space "${value.colorSpace}".`);
    }
    return {
        spaceId: space.id,
        space,
        coords: value.components,
        alpha: value.alpha,
    };
}
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