Add tests for markdown content escaping (#4058)

1 files changed, 5 insertions, 1 deletions

diff --git a/packages/markdown/remark/src/rehype-escape.ts b/packages/markdown/remark/src/rehype-escape.ts
index e776c1bb1..e99e37e41 100644
--- a/packages/markdown/remark/src/rehype-escape.ts
+++ b/packages/markdown/remark/src/rehype-escape.ts
@@ -1,5 +1,9 @@
 import { visit } from 'unist-util-visit';
 
+export function escapeEntities(value: string): string {
+	return value.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
+}
+
 export default function rehypeEscape(): any {
 	return function (node: any): any {
 		return visit(node, 'element', (el) => {
@@ -8,7 +12,7 @@ export default function rehypeEscape(): any {
 				// Visit all raw children and escape HTML tags to prevent Markdown code
 				// like "This is a `<script>` tag" from actually opening a script tag
 				visit(el, 'raw', (raw) => {
-					raw.value = raw.value.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
+					raw.value = escapeEntities(raw.value);
 				});
 			}
 			return el;