Move formatBanner to metro-core

Reviewed By: rafeca

Differential Revision: D6555773

fbshipit-source-id: 9d10a3d03c88eeaa2d6845518da3dacab8b556b0

packages/metro-core/src/formatBanner/formatBanner.js

@@ -6,6 +6,7 @@
  * LICENSE file in the root directory of this source tree. An additional grant
  * of patent rights can be found in the PATENTS file in the same directory.
  *
+ * Note: This file runs BEFORE transforms so DO NOT ADD ES6 or Flow in code!
  * @format
  */
 
@@ -44,6 +45,9 @@ var BOTTOM_RIGHT = '\u2518';
  *   // Space between the right banner border and the text (default = 2)
  *   paddingRight: number;
  * };
+ *
+ * @PrettierFixMe can't use comment-style flow syntax because prettier strips it
+ *                https://github.com/prettier/prettier/issues/204
  */
 function formatBanner(message, options) {
   options = options || {};

packages/metro-core/src/formatBanner/index.js

@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @flow
+ * @format
+ */
+
+'use strict';
+
+const formatBanner = require('./formatBanner');
+
+module.exports = formatBanner;

packages/metro-core/src/index.js

@@ -14,4 +14,9 @@
 
 const Terminal = require('./Terminal');
 
-module.exports = {Terminal};
+const formatBanner = require('./formatBanner');
+
+module.exports = {
+  Terminal,
+  formatBanner,
+};

packages/metro/src/lib/TerminalReporter.js

@@ -13,7 +13,6 @@
 'use strict';
 
 const chalk = require('chalk');
-const formatBanner = require('./formatBanner');
 const path = require('path');
 const reporting = require('./reporting');
 const throttle = require('lodash/throttle');
@@ -21,6 +20,7 @@ const throttle = require('lodash/throttle');
 const {
   AmbiguousModuleResolutionError,
 } = require('../node-haste/DependencyGraph/ResolutionRequest');
+const {formatBanner} = require('metro-core');
 
 import type {BundleOptions} from '../shared/types.flow';
 import type {ReportableEvent, GlobalCacheDisabledReason} from './reporting';