Pass showInstructions as an argument

Author: Timer

packages/react-scripts/scripts/start.js

@@ -49,7 +49,10 @@ function run(port) {
   var host = process.env.HOST || 'localhost';
 
   // Create a webpack compiler that is configured with custom messages.
-  var compiler = createWebpackCompiler(config, function onReady() {
+  var compiler = createWebpackCompiler(config, function onReady(showInstructions) {
+    if (!showInstructions) {
+      return;
+    }
     console.log();
     console.log('The app is running at:');
     console.log();

packages/react-scripts/scripts/utils/createWebpackCompiler.js

@@ -19,7 +19,7 @@ if (isSmokeTest) {
   };
 }
 
-module.exports = function createCompiler(config, onReadyCallback) {
+module.exports = function createWebpackCompiler(config, onReadyCallback) {
   // "Compiler" is a low-level interface to Webpack.
   // It lets us listen to some events and provide our own custom messages.
   try {
@@ -63,12 +63,10 @@ module.exports = function createCompiler(config, onReadyCallback) {
       console.log(chalk.green('Compiled successfully!'));
     }
 
-    if (showInstructions) {
-      if (typeof onReadyCallback === 'function') {
-        onReadyCallback();
-      }
-      isFirstCompile = false;
+    if (typeof onReadyCallback === 'function') {
+      onReadyCallback(showInstructions);
     }
+    isFirstCompile = false;
 
     // If errors exist, only show errors.
     if (messages.errors.length) {