diff --git a/extensions/ql-vscode/src/additional-typings.d.ts b/extensions/ql-vscode/src/additional-typings.d.ts
deleted file mode 100644
index d5a10a5f0..000000000
--- a/extensions/ql-vscode/src/additional-typings.d.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-/**
- * The d3 library is designed to work in both the browser and
- * node. Consequently their typings files refer to both node
- * types like `Buffer` (which don't exist in the browser), and browser
- * types like `Blob` (which don't exist in node). Instead of sticking
- * all of `dom` in `compilerOptions.lib`, it suffices just to put in a
- * stub definition of the affected types so that compilation
- * succeeds.
- */
-
-declare type RequestInit = Record<string, unknown>;
-declare type ElementTagNameMap = any;
-declare type NodeListOf<T> = Record<string, T>;
-declare type Node = Record<string, unknown>;
-declare type XMLDocument = Record<string, unknown>;