diff --git a/cli/js/lib.deno.ns.d.ts b/cli/js/lib.deno.ns.d.ts
index f3ee04243c..cd82b4adf3 100644
--- a/cli/js/lib.deno.ns.d.ts
+++ b/cli/js/lib.deno.ns.d.ts
@@ -3,6 +3,22 @@
 /// <reference no-default-lib="true" />
 /// <reference lib="esnext" />
 
+declare interface ImportMeta {
+  /** A string representation of the fully qualified module URL. */
+  url: string;
+
+  /** A flag that indicates if the current module is the main module that was
+   * called when starting the program under Deno.
+   *
+   * ```ts
+   * if (import.meta.main) {
+   *   // this was loaded as the main module, maybe do some bootstrapping
+   * }
+   * ```
+   */
+  main: boolean;
+}
+
 declare namespace Deno {
   /** A set of error constructors that are raised by Deno APIs. */
   export const errors: {
diff --git a/cli/js/lib.deno.shared_globals.d.ts b/cli/js/lib.deno.shared_globals.d.ts
index 58d25cea4a..7bb987ef4f 100644
--- a/cli/js/lib.deno.shared_globals.d.ts
+++ b/cli/js/lib.deno.shared_globals.d.ts
@@ -219,6 +219,10 @@ declare function clearInterval(id?: number): void;
  */
 declare function clearTimeout(id?: number): void;
 
+interface VoidFunction {
+  (): void;
+}
+
 /** A microtask is a short function which is executed after the function or
  * module which created it exits and only if the JavaScript execution stack is
  * empty, but before returning control to the event loop being used to drive the
@@ -227,7 +231,7 @@ declare function clearTimeout(id?: number): void;
  *
  *     queueMicrotask(() => { console.log('This event loop stack is complete'); });
  */
-declare function queueMicrotask(func: Function): void;
+declare function queueMicrotask(func: VoidFunction): void;
 
 declare var console: Console;
 declare var crypto: Crypto;
@@ -266,11 +270,6 @@ declare function removeEventListener(
   options?: boolean | EventListenerOptions | undefined
 ): void;
 
-declare interface ImportMeta {
-  url: string;
-  main: boolean;
-}
-
 interface DomIterable<K, V> {
   keys(): IterableIterator<K>;
   values(): IterableIterator<V>;