Add support for showing Flow messages to the User via an output channel

lib/flowLogging.js

@@ -0,0 +1,8 @@
+/**
+ * Adds a gloabl that is used inside consoleAppender.js to output console messages
+ * to the user, instead of to the developer console.
+ */
+export function setupLogging(): void {
+  const channel = vscode.window.createOutputChannel("Flow");
+  global.flowOutputChannel = channel
+}

lib/flowMain.js

@@ -1,50 +1,52 @@
-/* @flow */
-
-/*
- Copyright (c) 2015-present, Facebook, Inc.
- All rights reserved.
- *
- * This source code is licensed under the license found in the LICENSE file in
- the root directory of this source tree.
- */
-
-// Necessary to get the regenerator runtime, which transpiled async functions need
-import * as _ from 'regenerator-runtime/runtime';
-
-import * as vscode from 'vscode';
-
-import {CompletionSupport} from './flowCompletion';
-import {HoverSupport} from './flowHover'
-import {DeclarationSupport} from './flowDeclaration';
-import {setupDiagnostics} from './flowDiagnostics';
-
-import {checkNode, checkFlow, isFlowEnabled} from './utils'
-
-type Context = {
-	subscriptions: Array<vscode.Disposable>
-}
-
-const languages = [
-	{ language: 'javascript', scheme: 'file' },
-	'javascriptreact'
-]
-
-export function activate(context: Context): void {
-	//User can disable flow for some projects that previously used flow, but it's not have actual typing
-	if (!isFlowEnabled()) {
-		return
-	}
-	global.vscode = vscode
-	checkNode()
-	checkFlow()
-	// Language features
-	languages.forEach(lang => {
-		context.subscriptions.push(vscode.languages.registerHoverProvider(lang, new HoverSupport));
-		context.subscriptions.push(vscode.languages.registerDefinitionProvider(lang, new DeclarationSupport()));
-		context.subscriptions.push(vscode.languages.registerCompletionItemProvider(lang, new CompletionSupport(), '.'));
-	})
-	// https://github.com/Microsoft/vscode/issues/7031 Workaround for language scoring for language and in-memory. Check in nearest Insiders build
-	// context.subscriptions.push(vscode.languages.registerCompletionItemProvider({ language: 'javascript' }, new CompletionSupport(), '.'));
-	// Diagnostics
-	setupDiagnostics(context.subscriptions);
-}
+/* @flow */
+
+/*
+ Copyright (c) 2015-present, Facebook, Inc.
+ All rights reserved.
+ *
+ * This source code is licensed under the license found in the LICENSE file in
+ the root directory of this source tree.
+ */
+
+// Necessary to get the regenerator runtime, which transpiled async functions need
+import * as _ from 'regenerator-runtime/runtime';
+
+import * as vscode from 'vscode';
+
+import {CompletionSupport} from './flowCompletion';
+import {HoverSupport} from './flowHover'
+import {DeclarationSupport} from './flowDeclaration';
+import {setupDiagnostics} from './flowDiagnostics';
+
+import {checkNode, checkFlow, isFlowEnabled} from './utils'
+import {setupLogging} from "./flowLogging"
+
+type Context = {
+	subscriptions: Array<vscode.Disposable>
+}
+
+const languages = [
+	{ language: 'javascript', scheme: 'file' },
+	'javascriptreact'
+]
+
+export function activate(context: Context): void {
+	//User can disable flow for some projects that previously used flow, but it's not have actual typing
+	if (!isFlowEnabled()) {
+		return
+	}
+	global.vscode = vscode
+	setupLogging()
+	checkNode()
+	checkFlow()
+	// Language features
+	languages.forEach(lang => {
+		context.subscriptions.push(vscode.languages.registerHoverProvider(lang, new HoverSupport));
+		context.subscriptions.push(vscode.languages.registerDefinitionProvider(lang, new DeclarationSupport()));
+		context.subscriptions.push(vscode.languages.registerCompletionItemProvider(lang, new CompletionSupport(), '.'));
+	})
+	// https://github.com/Microsoft/vscode/issues/7031 Workaround for language scoring for language and in-memory. Check in nearest Insiders build
+	// context.subscriptions.push(vscode.languages.registerCompletionItemProvider({ language: 'javascript' }, new CompletionSupport(), '.'));
+	// Diagnostics
+	setupDiagnostics(context.subscriptions);
+}

lib/pkg/nuclide-logging/lib/consoleAppender.js

@@ -37,6 +37,13 @@ function layout(loggingEvent: any): Array<any> {
 function consoleAppender(): (loggingEvent: any) => void {
   return loggingEvent => {
     console.log.apply(console, layout(loggingEvent)); // eslint-disable-line no-console
+
+    // Also support outputing information into a VS Code console,
+    // it is only string based, so we only take the first string
+    if (global.flowOutputChannel) {
+      const message = layout(loggingEvent)[0]
+      global.flowOutputChannel.appendLine(message.replace("nuclide -", "flow -"))
+    }
   };
 }