Make types available to modules (#1390)

Author: RichDom2185

src/modules/requireProvider.ts

@@ -1,6 +1,7 @@
 import * as jsslang from '..'
 import * as stdlib from '../stdlib'
 import type { Context } from '../types'
+import * as types from '../types'
 
 /**
  * Returns a function that simulates the job of Node's `require`. The require
@@ -21,7 +22,8 @@ export const getRequireProvider = (context: Context) => (x: string) => {
     'js-slang': {
       ...jsslang,
       dist: {
-        stdlib
+        stdlib,
+        types
       },
       context
     }