expose Console as global

js/console.ts

@@ -492,7 +492,6 @@ export class Console {
   indentLevel: number;
   [isConsoleInstance]: boolean = false;
 
-  /** @internal */
   constructor(private printFunc: PrintFunc) {
     this.indentLevel = 0;
     this[isConsoleInstance] = true;

js/globals.ts

@@ -80,6 +80,7 @@ window.fetch = fetchTypes.fetch;
 window.clearTimeout = timers.clearTimeout;
 window.clearInterval = timers.clearInterval;
 window.console = new consoleTypes.Console(core.print);
+window.Console = consoleTypes.Console;
 window.setTimeout = timers.setTimeout;
 window.setInterval = timers.setInterval;
 window.location = (undefined as unknown) as domTypes.Location;

js/globals_test.ts

@@ -1,5 +1,5 @@
 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
-import { test, assert } from "./test_util.ts";
+import {test, assert, assertArrayContains, assertEquals} from "./test_util.ts";
 
 test(function globalThisExists(): void {
   assert(globalThis != null);
@@ -103,3 +103,24 @@ test(async function windowQueueMicrotask(): Promise<void> {
   await p1;
   await p2;
 });
+
+test(function consoleAssignToWindow(): void {
+  const originalConsole = window.console;
+  const captured: Array<[string, boolean]> = [];
+  const capturingConsole = new Console((x: string, isErr?: boolean): void => {
+    captured.push([x, !!isErr]);
+  });
+
+  window.console = capturingConsole;
+  console.log("this is log");
+  console.error("this is error");
+  window.console = originalConsole;
+
+  assertEquals(
+    JSON.stringify([
+      ["this is log\n", false],
+      ["this is error\n", true],
+    ]),
+    JSON.stringify(captured)
+  );
+});

js/lib.deno_runtime.d.ts

@@ -1274,6 +1274,7 @@ declare const fetch: typeof fetchTypes.fetch;
 declare const clearTimeout: typeof timers.clearTimeout;
 declare const clearInterval: typeof timers.clearInterval;
 declare const console: consoleTypes.Console;
+declare const Console: typeof consoleTypes.Console;
 declare const setTimeout: typeof timers.setTimeout;
 declare const setInterval: typeof timers.setInterval;
 declare const location: domTypes.Location;
@@ -1314,6 +1315,7 @@ declare const removeEventListener: (
 ) => void;
 
 declare type Blob = blob.DenoBlob;
+declare type Console = typeof consoleTypes.Console;
 declare type File = domTypes.DomFile;
 declare type CustomEventInit = customEvent.CustomEventInit;
 declare type CustomEvent = customEvent.CustomEvent;
@@ -1957,7 +1959,9 @@ declare namespace consoleTypes {
     static kClearScreenDown: string;
   }
   const isConsoleInstance: unique symbol;
+  type PrintFunc = (x: string, isErr?: boolean) => void;
   export class Console {
+    constructor(printFunc: PrintFunc);
     private printFunc;
     indentLevel: number;
     [isConsoleInstance]: boolean;

js/test_util.ts

@@ -19,6 +19,7 @@ export {
   assertNotEquals,
   assertStrictEq,
   assertStrContains,
+  assertArrayContains,
   unreachable
 } from "./deps/https/deno.land/std/testing/asserts.ts";