diff --git a/components/HooksEditor.tsx b/components/HooksEditor.tsx
index ab7c7e8..68675d2 100644
--- a/components/HooksEditor.tsx
+++ b/components/HooksEditor.tsx
@@ -7,6 +7,7 @@ import { useRouter } from 'next/router'
 
 import Box from './Box'
 import Container from './Container'
+import asc from 'assemblyscript/dist/asc'
 import { createNewFile, saveFile } from '../state/actions'
 import { apiHeaderFiles } from '../state/constants'
 import state from '../state'
@@ -210,6 +211,11 @@ const HooksEditor = () => {
                 )
               }
 
+              monaco.languages.typescript.typescriptDefaults.addExtraLib(
+                asc.definitionFiles.assembly,
+                'assemblyscript/std/assembly/index.d.ts'
+              )
+
               // create the web socket
               if (!subscriptionRef.current) {
                 monaco.languages.register({