postcss-colormin

type AutoprefixerOptions = {
    overrideBrowserslist?: string | string[];
};

type BrowserslistOptions = Pick<browserslist.Options, 'stats' | 'path' | 'env'>;

type MinifyColorOptions = {
    hex?: boolean;
    alphaHex?: boolean;
    rgb?: boolean;
    hsl?: boolean;
    name?: boolean;
    transparent?: boolean;
    /**
     * Whether to minify colors inside custom property values (default: true)
     */
    transformCustomProperties?: boolean;
};

type Options = MinifyColorOptions & AutoprefixerOptions & BrowserslistOptions;