Pull in es2015, es2018.asynciterable

Author: jakebailey

baselines/audioworklet.generated.d.ts

@@ -1,3 +1,6 @@
+/// <reference lib="es2015" />
+/// <reference lib="es2018.asynciterable" />
+
 /////////////////////////////
 /// AudioWorklet APIs
 /////////////////////////////

baselines/dom.generated.d.ts

@@ -1,3 +1,6 @@
+/// <reference lib="es2015" />
+/// <reference lib="es2018.asynciterable" />
+
 /////////////////////////////
 /// Window APIs
 /////////////////////////////

baselines/serviceworker.generated.d.ts

@@ -1,3 +1,6 @@
+/// <reference lib="es2015" />
+/// <reference lib="es2018.asynciterable" />
+
 /////////////////////////////
 /// ServiceWorker APIs
 /////////////////////////////

baselines/sharedworker.generated.d.ts

@@ -1,3 +1,6 @@
+/// <reference lib="es2015" />
+/// <reference lib="es2018.asynciterable" />
+
 /////////////////////////////
 /// SharedWorker APIs
 /////////////////////////////

baselines/webworker.generated.d.ts

@@ -1,3 +1,6 @@
+/// <reference lib="es2015" />
+/// <reference lib="es2018.asynciterable" />
+
 /////////////////////////////
 /// Worker APIs
 /////////////////////////////

src/build/emitter.ts

@@ -1595,6 +1595,13 @@ export function emitWebIdl(
 
   function emit() {
     printer.reset();
+
+    if (compilerBehavior.includeIterable) {
+      printer.printLine(`/// <reference lib="es2015" />`);
+      printer.printLine(`/// <reference lib="es2018.asynciterable" />`)
+      printer.printLine("");
+    }
+
     printer.printLine("/////////////////////////////");
     printer.printLine(`/// ${global} APIs`);
     printer.printLine("/////////////////////////////");