Added bundle script

Author: arthuralee

local-cli/bundle.js

@@ -0,0 +1,68 @@
+var http = require('http');
+var fs = require('fs');
+
+var OUT_PATH = 'iOS/main.jsbundle';
+
+function getBundle(flags, callback) {
+  var options = {
+    host: 'localhost',
+    port: 8081,
+    path: '/index.ios.bundle?dev=' + flags.dev + '&minify=' + flags.minify
+  };
+
+  console.log('Requesting bundle from local server');
+  var req = http.request(options, function(res) {
+    var bundle = '';
+
+    res.on('data', function (chunk) {
+      bundle += chunk;
+    });
+
+    res.on('end', function () {
+      console.log('Got bundle');
+      callback(bundle);
+    });
+  });
+
+  // set up error handler
+  req.on('error', function(err) {
+    console.error('An error occured while connecting to local server. Are you sure the server is running? Run npm start');
+  });
+
+  // end request
+  req.end();
+}
+
+function showHelp() {
+  console.log([
+    'Usage: react-native bundle [options]',
+    '',
+    'Options:',
+    '  --dev\t\tsets DEV flag to true',
+    '  --minify\tminify js bundle'
+  ].join('\n'));
+  process.exit(1);
+}
+
+module.exports = {
+  init: function(args) {
+    var flags = {
+      help: args.indexOf('--help') !== -1,
+      dev: args.indexOf('--dev') !== -1,
+      minify: args.indexOf('--minify') !== -1
+    }
+
+    if (flags.help) {
+      showHelp();
+    } else {
+      getBundle(flags, function(bundle) {
+        fs.writeFile(OUT_PATH, bundle, function(err) {
+          if(err) {
+            return console.err('Error writing bundle to file', err);
+          }
+          console.log('Successfully saved bundle to ' + OUT_PATH);
+        });
+      });
+    }
+  }
+}

local-cli/cli.js

@@ -7,14 +7,16 @@
 var spawn = require('child_process').spawn;
 var path = require('path');
 var install = require('./install.js');
+var bundle = require('./bundle.js');
 
 function printUsage() {
   console.log([
     'Usage: react-native <command>',
     '',
     'Commands:',
     '  start: starts the webserver',
-    '  install: installs npm react components'
+    '  install: installs npm react components',
+    '  build: builds the javascript bundle for offline use'
   ].join('\n'));
   process.exit(1);
 }
@@ -36,6 +38,9 @@ function run() {
   case 'install':
     install.init();
     break;
+  case 'bundle':
+    bundle.init(args);
+    break;
   default:
     console.error('Command `%s` unrecognized', args[0]);
     printUsage();