SVGFEDisplacementMapElement: {
    prototype: SVGFEDisplacementMapElement;
    SVG_CHANNEL_A: 4;
    SVG_CHANNEL_B: 3;
    SVG_CHANNEL_G: 2;
    SVG_CHANNEL_R: 1;
    SVG_CHANNEL_UNKNOWN: 0;
    new (): SVGFEDisplacementMapElement;
}