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GD- Ganesh Deshmukh
Asked: 2018-04-07 20:46:33 +0800 CST

react-native watchman error, after npm start on Ubuntu 17.10.

  • 772

I am trying to start project of React-native on Ubuntu, node,npm are at latest versions. according to documentation I have Install all official create-react-native-app and its dependencies.

here is my output screen after npm start

gd@gd:~/Desktop$ cd testing7/
gd@gd:~/Desktop/testing7$ npm start

> [email protected] start /home/gd/Desktop/testing7
> react-native-scripts start

10:01:07: Starting packager...
***ERROR STARTING PACKAGER***
Starting React Native packager...
Scanning folders for symlinks in /home/gd/Desktop/testing7/node_modules (44ms)
Loading dependency graph.



jest-haste-map: Watchman crawl failed. Retrying once with node crawler.
  Usually this happens when watchman isn't running. Create an empty `.watchmanconfig` file in your project's root folder or initialize a git or hg repository in your project.
  Error: Watchman error: A non-recoverable condition has triggered.  Watchman needs your help!
The triggering condition was at timestamp=1523075484: opendir(/home/gd/Desktop/testing7/node_modules/metro/node_modules/ansi-regex) -> The user limit on the total number of inotify watches was reached; increase the fs.inotify.max_user_watches sysctl
All requests will continue to fail with this message until you resolve
the underlying problem.  You will find more information on fixing this at
https://facebook.github.io/watchman/docs/troubleshooting.html#poison-opendir. Make sure watchman is running for this project. See https://facebook.github.io/watchman/docs/troubleshooting.html.

screenshot

dependencies npm

4 Answers

  1. Try these two commands

    `watchman watch-del-all`
`watchman shutdown-server`
    • 5

  2. try this command:

    echo 256 | sudo tee -a /proc/sys/fs/inotify/max_user_instances
echo 32768 | sudo tee -a /proc/sys/fs/inotify/max_queued_events
echo 65536 | sudo tee -a /proc/sys/fs/inotify/max_user_watches
watchman shutdown-server
    • 1
  3. Best Answer

    run following commands or make bash files with following contents and

    run as bash yourfilename.sh

    touch .watchmanconfig
watchman watch-del-all
watchman shutdown-server
sudo pkill -9 -x fseventsd
echo fs.inotify.max_user_instances=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p
echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p
echo fs.inotify.max_queued_events=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p
    • 1

  4. For troubleshooting WatchMan errors check out this page here

    • 0