fix: external styles on svg elements (#2320)

src/css/property-descriptors/__tests__/font-family.ts

@@ -6,26 +6,19 @@ const fontFamilyParse = (value: string) => fontFamily.parse(Parser.parseValues(v
 
 describe('property-descriptors', () => {
     describe('font-family', () => {
-        it('sans-serif', () =>
-            deepEqual(fontFamilyParse('sans-serif'), [
-                "sans-serif",
-            ]));
+        it('sans-serif', () => deepEqual(fontFamilyParse('sans-serif'), ['sans-serif']));
 
         it('great fonts 40 library', () =>
-            deepEqual(fontFamilyParse('great fonts 40 library'), [
-                "'great fonts 40 library'",
-            ]));
+            deepEqual(fontFamilyParse('great fonts 40 library'), ["'great fonts 40 library'"]));
 
         it('preferred font, "quoted fallback font", font', () =>
             deepEqual(fontFamilyParse('preferred font, "quoted fallback font", font'), [
                 "'preferred font'",
                 "'quoted fallback font'",
-                "font"
+                'font'
             ]));
 
         it("'escaping test\\'s font'", () =>
-            deepEqual(fontFamilyParse("'escaping test\\'s font'"), [
-                "'escaping test\'s font'",
-            ]));
+            deepEqual(fontFamilyParse("'escaping test\\'s font'"), ["'escaping test's font'"]));
     });
 });

src/css/property-descriptors/font-family.ts

@@ -32,6 +32,6 @@ export const fontFamily: IPropertyListDescriptor<FontFamily> = {
         if (accumulator.length) {
             results.push(accumulator.join(' '));
         }
-        return results.map(result => result.indexOf(' ') === -1 ? result : `'${result}'`);
+        return results.map(result => (result.indexOf(' ') === -1 ? result : `'${result}'`));
     }
 };

src/dom/document-cloner.ts

@@ -116,7 +116,7 @@ export class DocumentCloner {
         return iframeLoad;
     }
 
-    createElementClone(node: HTMLElement): HTMLElement {
+    createElementClone<T extends HTMLElement | SVGElement>(node: T): HTMLElement | SVGElement {
         if (isCanvasElement(node)) {
             return this.createCanvasClone(node);
         }
@@ -129,8 +129,7 @@ export class DocumentCloner {
             return this.createStyleClone(node);
         }
 
-        const clone = node.cloneNode(false) as HTMLElement;
-
+        const clone = node.cloneNode(false) as T;
         // @ts-ignore
         if (isImageElement(clone) && clone.loading === 'lazy') {
             // @ts-ignore
@@ -266,14 +265,14 @@ export class DocumentCloner {
 
         const window = node.ownerDocument.defaultView;
 
-        if (isHTMLElementNode(node) && window) {
+        if (window && isElementNode(node) && (isHTMLElementNode(node) || isSVGElementNode(node))) {
             const clone = this.createElementClone(node);
 
             const style = window.getComputedStyle(node);
             const styleBefore = window.getComputedStyle(node, ':before');
             const styleAfter = window.getComputedStyle(node, ':after');
 
-            if (this.referenceElement === node) {
+            if (this.referenceElement === node && isHTMLElementNode(clone)) {
                 this.clonedReferenceElement = clone;
             }
             if (isBodyElement(clone)) {
@@ -307,7 +306,7 @@ export class DocumentCloner {
 
             this.counters.pop(counters);
 
-            if (style && this.options.copyStyles && !isIFrameElement(node)) {
+            if (style && (this.options.copyStyles || isSVGElementNode(node)) && !isIFrameElement(node)) {
                 copyCSSStyles(style, clone);
             }
 
@@ -487,7 +486,7 @@ const iframeLoader = (iframe: HTMLIFrameElement): Promise<HTMLIFrameElement> =>
     });
 };
 
-export const copyCSSStyles = (style: CSSStyleDeclaration, target: HTMLElement): HTMLElement => {
+export const copyCSSStyles = <T extends HTMLElement | SVGElement>(style: CSSStyleDeclaration, target: T): T => {
     // Edge does not provide value for cssText
     for (let i = style.length - 1; i >= 0; i--) {
         const property = style.item(i);

src/dom/node-parser.ts

@@ -102,7 +102,7 @@ const createsStackingContext = (styles: CSSParsedDeclaration): boolean => styles
 export const isTextNode = (node: Node): node is Text => node.nodeType === Node.TEXT_NODE;
 export const isElementNode = (node: Node): node is Element => node.nodeType === Node.ELEMENT_NODE;
 export const isHTMLElementNode = (node: Node): node is HTMLElement =>
-    typeof (node as HTMLElement).style !== 'undefined';
+    isElementNode(node) && typeof (node as HTMLElement).style !== 'undefined' && !isSVGElementNode(node);
 export const isSVGElementNode = (element: Element): element is SVGElement =>
     typeof (element as SVGElement).className === 'object';
 export const isLIElement = (node: Element): node is HTMLLIElement => node.tagName === 'LI';

tests/reftests/images/svg/native_only.html

@@ -15,6 +15,12 @@
             content: " ";
         }
     </style>
+    <style>
+        .html { font: italic 13px sans-serif; }
+        .two { font: bold 14px sans-serif; }
+        .canvas { font: italic 15px serif; fill: red; }
+    </style>
+
 </head>
 <body>
 <div>
@@ -28,6 +34,11 @@
                   style="fill:#40aa54;fill-opacity:1;stroke:#20552a;stroke-width:7.99999952;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"/>
         </g>
     </svg>
+    <svg width="240" height="160" viewBox="0 0 120 80" xmlns="http://www.w3.org/2000/svg">
+        <text x="40" y="20" class="html">html</text>
+        <text x="55" y="25" class="two">2</text>
+        <text x="65" y="35" class="canvas">canvas</text>
+    </svg>
     <img width="200" height="200" src="data:image/svg+xml;base64,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" /></div>
 </body>
 </html>