diff --git a/javascript/extractor/lib/typescript/src/main.ts b/javascript/extractor/lib/typescript/src/main.ts
index eb3ce99a875..626c8a593b0 100644
--- a/javascript/extractor/lib/typescript/src/main.ts
+++ b/javascript/extractor/lib/typescript/src/main.ts
@@ -670,6 +670,12 @@ function handleOpenProjectCommand(command: OpenProjectCommand) {
         if (file.endsWith(".d.ts")) {
             return pathlib.basename(file, ".d.ts");
         }
+        if (file.endsWith(".d.mts") || file.endsWith(".d.cts")) {
+            // We don't extract d.mts or d.cts files, but their symbol can coincide with that of a d.ts file,
+            // which means any module bindings we generate for it will ultimately be visible in QL.
+            let base = pathlib.basename(file);
+            return base.substring(0, base.length - '.d.mts'.length);
+        }
         let base = pathlib.basename(file);
         let dot = base.lastIndexOf('.');
         return dot === -1 || dot === 0 ? base : base.substring(0, dot);