add and adopt trusted types apply util, #106396

src/vs/base/browser/dom.ts

@@ -22,6 +22,13 @@ export function clearNode(node: HTMLElement): void {
 	}
 }
 
+export function trustedInnerHTML(node: Element, value: TrustedHTML): void {
+	// this is a workaround for innerHTML not allowing for "asymetric" accessors
+	// see https://github.com/microsoft/vscode/issues/106396#issuecomment-692625393
+	// and https://github.com/microsoft/TypeScript/issues/30024
+	node.innerHTML = value as unknown as string;
+}
+
 export function isInDOM(node: Node | null): boolean {
 	while (node) {
 		if (node === document.body) {

src/vs/workbench/contrib/notebook/browser/view/renderers/cellRenderer.ts

@@ -647,7 +647,7 @@ class CodeCellDragImageRenderer {
 			return null;
 		}
 
-		editorContainer.innerHTML = richEditorText as unknown as string;
+		DOM.trustedInnerHTML(editorContainer, richEditorText);
 
 		return dragImageContainer;
 	}