title: Failed to exec start script - EventEmitter.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/lifecycle.js:279:16)
body: <p>I have installed node 8.10 and downgrade to npm 4 because i have error message with npm 5.</p>
  
  <pre><code>*******************************************************************************
  ERROR: npm 5 is not supported yet
  </code></pre>
  
  <hr>
  
  <p>Then I use the command to downgrade npm
      npm install -g npm@4.</p>
  
  <p>So I create my projet</p>
  
  <pre><code>$&gt;npm install -g create-react-native-app
  $&gt;create-react-native-app AwesomeProject
  $&gt;cd AwesomeProject
  $&gt;npm start
  </code></pre>
  
  <p>And then I have the following error message.</p>
  
  <pre><code>&gt; AwesomeProject@0.1.0 start /private/var/root/AwesomeProject
  &gt; react-native-scripts start
  
  09:42:16: Unable to start server
  See https://git.io/v5vcn for more information, either install watchman or run the following snippet:
    sudo sysctl -w kern.maxfiles=5242880
    sudo sysctl -w kern.maxfilesperproc=524288
  
  npm ERR! code ELIFECYCLE
  npm ERR! errno 1
  npm ERR! AwesomeProject@0.1.0 start: `react-native-scripts start`
  npm ERR! Exit status 1
  npm ERR! 
  npm ERR! Failed at the AwesomeProject@0.1.0 start script.
  npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
  
  npm ERR! A complete log of this run can be found in:
  npm ERR!     /var/root/.npm/_logs/2018-03-23T08_42_16_152Z-debug.log
  </code></pre>
  
  <p>I have a look to the logfile</p>
  
  <pre><code>0 info it worked if it ends with ok
  1 verbose cli [ '/usr/local/bin/node', '/usr/local/bin/npm', 'start' ]
  2 info using npm@4.6.1
  3 info using node@v8.10.0
  4 verbose run-script [ 'prestart', 'start', 'poststart' ]
  5 info lifecycle AwesomeProject@0.1.0~prestart: AwesomeProject@0.1.0
  6 silly lifecycle AwesomeProject@0.1.0~prestart: no script for prestart, continuing
  7 info lifecycle AwesomeProject@0.1.0~start: AwesomeProject@0.1.0
  8 verbose lifecycle AwesomeProject@0.1.0~start: unsafe-perm in lifecycle true
  9 verbose lifecycle AwesomeProject@0.1.0~start: PATH: /usr/local/lib/node_modules/npm/bin/node-gyp-bin:/private/var/root/AwesomeProject/node_modules/.bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin
  10 verbose lifecycle AwesomeProject@0.1.0~start: CWD: /private/var/root/AwesomeProject
  11 silly lifecycle AwesomeProject@0.1.0~start: Args: [ '-c', 'react-native-scripts start' ]
  12 silly lifecycle AwesomeProject@0.1.0~start: Returned: code: 1  signal: null
  13 info lifecycle AwesomeProject@0.1.0~start: Failed to exec start script
  14 verbose stack Error: AwesomeProject@0.1.0 start: `react-native-scripts start`
  14 verbose stack Exit status 1
  14 verbose stack     at EventEmitter.&lt;anonymous&gt; (/usr/local/lib/node_modules/npm/lib/utils/lifecycle.js:279:16)
  14 verbose stack     at emitTwo (events.js:126:13)
  14 verbose stack     at EventEmitter.emit (events.js:214:7)
  14 verbose stack     at ChildProcess.&lt;anonymous&gt; (/usr/local/lib/node_modules/npm/lib/utils/spawn.js:40:14)
  14 verbose stack     at emitTwo (events.js:126:13)
  14 verbose stack     at ChildProcess.emit (events.js:214:7)
  14 verbose stack     at maybeClose (internal/child_process.js:925:16)
  14 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:209:5)
  15 verbose pkgid AwesomeProject@0.1.0
  16 verbose cwd /private/var/root/AwesomeProject
  17 verbose Darwin 17.2.0
  18 verbose argv "/usr/local/bin/node" "/usr/local/bin/npm" "start"
  19 verbose node v8.10.0
  20 verbose npm  v4.6.1
  21 error code ELIFECYCLE
  22 error errno 1
  23 error AwesomeProject@0.1.0 start: `react-native-scripts start`
  23 error Exit status 1
  24 error Failed at the AwesomeProject@0.1.0 start script.
  24 error This is probably not a problem with npm. There is likely additional logging output above.
  25 verbose exit [ 1, true ]
  </code></pre>
  
  <p>Have you an idea?</p>
  
  <p>Best regard.</p>