react-native-cli initial commit

A cli package that is responsible for:
* starting a new react-native project
* forwarding all other commands to a cli module in react-native
* currently cli.js knows how to start the webserver, in the future it may do things like build the app etc.

cli.js

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+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ */
+
+'use strict';
+
+var spawn = require('child_process').spawn;
+var path = require('path');
+
+function printUsage() {
+  console.log([
+    'Usage: react-native <command>',
+    '',
+    'Commands:',
+    '  start: starts the webserver',
+  ].join('\n'));
+  process.exit(1);
+}
+
+function run() {
+  var args = process.argv.slice(2);
+  if (args.length === 0) {
+    printUsage();
+  }
+
+  switch (args[0]) {
+  case 'start':
+    spawn('sh', [
+      path.resolve(__dirname, 'packager', 'packager.sh'),
+      '--projectRoots',
+      process.cwd(),
+    ], {stdio: 'inherit'});
+    break;
+  default:
+    console.error('Command `%s` unrecognized', args[0]);
+    printUsage();
+  }
+  // Here goes any cli commands we need to
+}
+
+function init() {
+  spawn('sh', [path.resolve(__dirname, 'init.sh')], {stdio:'inherit'});
+}
+
+module.exports = {
+  run: run,
+  init: init,
+};

react-native-cli/index.js

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+#!/usr/bin/env node
+
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ */
+
+var spawn = require('child_process').spawn;
+var path = require('path');
+
+var CLI_MODULE_PATH = path.resolve(
+  process.cwd(),
+  'node_modules',
+  'react-native',
+  'cli'
+);
+
+var cli;
+try {
+  cli = require(CLI_MODULE_PATH);
+} catch(e) {}
+
+if (cli) {
+  cli.run();
+} else {
+  var args = process.argv.slice(2);
+  if (args.length === 0) {
+    console.error(
+      'You did not pass any commands, did you mean to run init?'
+    );
+    process.exit(1);
+  }
+
+  if (args[0] === 'init') {
+    init();
+  } else {
+    console.error(
+      'Command `%s` unrecognized.' +
+      'Did you mean to run this inside a react-native project?',
+      args[0]
+    );
+    process.exit(1);
+  }
+}
+
+function init() {
+  console.log(
+    'This will walk you through creating a new react-native project',
+    'in the current directory'
+  );
+
+  console.log('Running npm init');
+  run('npm init', function(e) {
+    if (e) {
+      console.error('npm init failed');
+      process.exit(1);
+    }
+
+    run('npm install --save react-native', function(e) {
+      if (e) {
+        console.error('`npm install --save react-native` failed');
+        process.exit(1);
+      }
+
+      var cli = require(CLI_MODULE_PATH);
+      cli.init();
+    });
+  });
+}
+
+function run(command, cb) {
+  var parts = command.split(/\s+/);
+  var cmd = parts[0];
+  var args = parts.slice(1);
+  var proc = spawn(cmd, args, {stdio: 'inherit'});
+  proc.on('close', function(code) {
+    if (code !== 0) {
+      cb(new Error('Command exited with a non-zero status'));
+    } else {
+      cb(null);
+    }
+  });
+}

react-native-cli/package.json

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+{
+  "name": "react-native-cli",
+  "version": "0.0.0",
+  "description": "The ReactNative cli tools",
+  "main": "index.js",
+  "bin": {
+    "react-native": "index.js"
+  }
+}