clipper: remove clone related functions

Signed-off-by: 01zulfi <85733202+01zulfi@users.noreply.github.com>

packages/clipper/src/utils.ts

@@ -173,6 +173,90 @@ function safeQuerySelectorAll(root: Node, selector: string) {
   }
 }
 
+const SVGElements = [
+  "altGlyph",
+  "altGlyphDef",
+  "altGlyphItem",
+  "animate",
+  "animateColor",
+  "animateMotion",
+  "animateTransform",
+  "circle",
+  "clipPath",
+  "color-profile",
+  "cursor",
+  "defs",
+  "desc",
+  "ellipse",
+  "feBlend",
+  "feColorMatrix",
+  "feComponentTransfer",
+  "feComposite",
+  "feConvolveMatrix",
+  "feDiffuseLighting",
+  "feDisplacementMap",
+  "feDistantLight",
+  "feFlood",
+  "feFuncA",
+  "feFuncB",
+  "feFuncG",
+  "feFuncR",
+  "feGaussianBlur",
+  "feImage",
+  "feMerge",
+  "feMergeNode",
+  "feMorphology",
+  "feOffset",
+  "fePointLight",
+  "feSpecularLighting",
+  "feSpotLight",
+  "feTile",
+  "feTurbulence",
+  "filter",
+  "font-face",
+  "font-face-format",
+  "font-face-name",
+  "font-face-src",
+  "font-face-uri",
+  "foreignObject",
+  "g",
+  "glyph",
+  "glyphRef",
+  "hkern",
+  "image",
+  "line",
+  "linearGradient",
+  "marker",
+  "mask",
+  "metadata",
+  "missing-glyph",
+  "mpath",
+  "path",
+  "pattern",
+  "polygon",
+  "polyline",
+  "radialGradient",
+  "rect",
+  "set",
+  "stop",
+  "svg",
+  "switch",
+  "symbol",
+  "text",
+  "textPath",
+  "title",
+  "tref",
+  "tspan",
+  "use",
+  "view",
+  "vkern"
+].map((a) => a.toLowerCase());
+
+function isSVGElement(element: HTMLElement) {
+  if (!element || !element.tagName) return false;
+  return SVGElements.includes(element.tagName.toLowerCase());
+}
+
 export {
   injectCss,
   escape,
@@ -188,5 +272,6 @@ export {
   escapeXhtml,
   width,
   height,
-  safeQuerySelectorAll
+  safeQuerySelectorAll,
+  isSVGElement
 };