SVGFEColorMatrixElement: {
    SVG_FECOLORMATRIX_TYPE_HUEROTATE: number;
    SVG_FECOLORMATRIX_TYPE_LUMINANCETOALPHA: number;
    SVG_FECOLORMATRIX_TYPE_MATRIX: number;
    SVG_FECOLORMATRIX_TYPE_SATURATE: number;
    SVG_FECOLORMATRIX_TYPE_UNKNOWN: number;
    prototype: SVGFEColorMatrixElement;
    new (): SVGFEColorMatrixElement;
}