Support loading additional TS lib files (#3863)

Fixes #3726

This PR provides support for referencing other lib files (like lib.dom.d.ts that are not
used by default in Deno.

1 files changed, 7 insertions, 0 deletions

diff --git a/cli/js/ts_global.d.ts b/cli/js/ts_global.d.ts
index f887d578e..7b9d84c7a 100644
--- a/cli/js/ts_global.d.ts
+++ b/cli/js/ts_global.d.ts
@@ -16,4 +16,11 @@ declare global {
   namespace ts {
     export = ts_;
   }
+
+  namespace ts {
+    // this are marked @internal in TypeScript, but we need to access them,
+    // there is a risk these could change in future versions of TypeScript
+    export const libs: string[];
+    export const libMap: Map<string, string>;
+  }
 }