diff --git a/apps/oxlint/src-js/globals.d.ts b/apps/oxlint/src-js/globals.d.ts
index e4d19096f9bd6..5db7c9fd96e20 100644
--- a/apps/oxlint/src-js/globals.d.ts
+++ b/apps/oxlint/src-js/globals.d.ts
@@ -5,3 +5,9 @@ declare const DEBUG: boolean;
 
 // `true` if is build for conformance testing
 declare const CONFORMANCE: boolean;
+
+// `RegExp.escape` is not yet in TypeScript's lib types (available from ES2025).
+// TODO: Remove this once TypeScript ships it.
+interface RegExpConstructor {
+  escape(this: void, str: string): string;
+}