Failed to exec start script - EventEmitter.<anonymous> (/usr/local/lib/node_modules/npm/lib/utils/lifecycle.js:279:16)

Question

I have installed node 8.10 and downgrade to npm 4 because i have error message with npm 5.

*******************************************************************************
ERROR: npm 5 is not supported yet

---

Then I use the command to downgrade npm npm install -g npm@4.

So I create my projet

$>npm install -g create-react-native-app
$>create-react-native-app AwesomeProject
$>cd AwesomeProject
$>npm start

And then I have the following error message.

> [email protected] start /private/var/root/AwesomeProject
> 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! [email protected] start: `react-native-scripts start`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the [email protected] 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

I have a look to the logfile

0 info it worked if it ends with ok
1 verbose cli [ '/usr/local/bin/node', '/usr/local/bin/npm', 'start' ]
2 info using [email protected]
3 info using [email protected]
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle [email protected]~prestart: [email protected]
6 silly lifecycle [email protected]~prestart: no script for prestart, continuing
7 info lifecycle [email protected]~start: [email protected]
8 verbose lifecycle [email protected]~start: unsafe-perm in lifecycle true
9 verbose lifecycle [email protected]~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 [email protected]~start: CWD: /private/var/root/AwesomeProject
11 silly lifecycle [email protected]~start: Args: [ '-c', 'react-native-scripts start' ]
12 silly lifecycle [email protected]~start: Returned: code: 1  signal: null
13 info lifecycle [email protected]~start: Failed to exec start script
14 verbose stack Error: [email protected] start: `react-native-scripts start`
14 verbose stack Exit status 1
14 verbose stack     at EventEmitter.<anonymous> (/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.<anonymous> (/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 [email protected]
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 [email protected] start: `react-native-scripts start`
23 error Exit status 1
24 error Failed at the [email protected] start script.
24 error This is probably not a problem with npm. There is likely additional logging output above.
25 verbose exit [ 1, true ]

Have you an idea?

Best regard.

Answer 1

Try these steps:

1. npm install -g npm@latest to update npm because it is sometimes buggy.
2. rm -rf node_modules to remove the existing modules.
3. npm install to re-install the project dependencies.