export declare function isImageSrc(src: string): boolean;
export declare function hexToRgb(hex: string): [r: number, g: number, b: number];
export declare function isLight(hexColor: string): boolean;
export declare function readFileData(url: string, callback: (error: Error | null, data: string | null) => any): any;
export declare function svgToUri(svg: string): string;
export declare function getSvgCSS(svg: any): Promise<any>;