feat: Implement Env service

Author: CGNonofr

src/services.ts

@@ -7,6 +7,7 @@ import { RenameFile, CreateFile, WorkspaceEdit, Disposable } from 'vscode-langua
 import WatchableConsoleWindow from './services/WatchableConsoleWindow'
 import CodinGameMonacoWorkspace from './services/CodinGameMonacoWorkspace'
 import { Infrastructure } from './infrastructure'
+import CodinGameMonacoEnv from './services/CodinGameMonacoEnv'
 
 interface CgMonacoServices extends Services {
   commands: MonacoCommands
@@ -35,7 +36,8 @@ const services = {
   commands: new MonacoCommands(monaco),
   languages: new MonacoLanguages(monaco, p2m, m2p),
   workspace: new CodinGameMonacoWorkspace(p2m, m2p, 'file:///tmp/project'),
-  window: new WatchableConsoleWindow()
+  window: new WatchableConsoleWindow(),
+  env: new CodinGameMonacoEnv()
 }
 
 installCommands(services)

src/services/CodinGameMonacoEnv.ts

@@ -0,0 +1,37 @@
+import {
+  Env
+} from 'monaco-languageclient'
+
+/**
+ * Attempts to open a window and returns whether it succeeded. This technique is
+ * not appropriate in certain contexts, like for example when the JS context is
+ * executing inside a sandboxed iframe. If it is not necessary to know if the
+ * browser blocked the new window, use {@link windowOpenNoOpener}.
+ *
+ * See https://github.com/microsoft/monaco-editor/issues/601
+ * See https://github.com/microsoft/monaco-editor/issues/2474
+ * See https://mathiasbynens.github.io/rel-noopener/
+ *
+ * @param url the url to open
+ * @param noOpener whether or not to set the {@link window.opener} to null. You should leave the default
+ * (true) unless you trust the url that is being opened.
+ * @returns boolean indicating if the {@link window.open} call succeeded
+ */
+export function windowOpenWithSuccess (url: string, noOpener = true): boolean {
+  const newTab = window.open()
+  if (newTab != null) {
+    if (noOpener) {
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      (newTab as any).opener = null
+    }
+    newTab.location.href = url
+    return true
+  }
+  return false
+}
+
+export default class CodinGameMonacoEnv implements Env {
+  openExternal: Env['openExternal'] = async (uri) => {
+    return windowOpenWithSuccess(uri.toString())
+  }
+}