feat: add util package for generating search indices (#8571)

packages/api-extractor-utils/src/tsdoc/FencedCodeCommentNode.ts

@@ -0,0 +1,15 @@
+import type { DocFencedCode } from '@microsoft/tsdoc';
+import { type DocNodeJSON, node } from './CommentNode';
+
+export interface DocFencedCodeJSON extends DocNodeJSON {
+	code: string;
+	language: string;
+}
+
+export function fencedCode(fencedCode: DocFencedCode) {
+	return {
+		...node(fencedCode),
+		language: fencedCode.language,
+		code: fencedCode.code,
+	};
+}