Question

我尝试在Fedora 26中使用React Native，直到那时我一直关注facebook tutorial。

一切都很顺利，直到我尝试启动应用程序与npm

npm start

并收到此错误：

> cardbook@0.1.0 start $HOME/cardbook
> react-native-scripts start

9:31:54 AM: Starting packager...
***ERROR STARTING PACKAGER***
Starting React Native packager...
Scanning 770 folders for symlinks in $HOME/cardbook/node_modules (19ms)
Loading dependency graph.
Running packager on port 19001.


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=1507206724: inotify-add-watch($HOME/cardbook/node_modules/react-native-maps/lib/android/lib/build/tmp/expandedArchives/classes.jar_6745ow7srqaaq6vs8k7dkn33k/com/google/android/gms/common/data) -> 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-inotify-add-watch. Make sure watchman is running for this project. See https://facebook.github.io/watchman/docs/troubleshooting.html.

其他信息：

守望者版本：4.9.0
npm version：3.10.10

任何纯洁善良的灵魂能帮助我吗？

Answer 1

我正在手机上运行我的应用程序。我采用了启发式方法，试图快速解决问题，然后缺乏信息。无论如何，我解决了这个问题：

首先我卸载了守望者：

$ sudo make uninstall

所以对于纱线（注意我没有使用npm，这仍然不起作用），我收到了以下提示：

yarn start
yarn run v1.1.0
$ react-native-scripts start
11:15:08 AM: Unable to start server
  See https://git.io/v5vcn for more information, either install watchman or run the following snippet:
    sudo sysctl -w fs.inotify.max_user_instances=1024
    sudo sysctl -w fs.inotify.max_user_watches=12288
error Command failed with exit code 1.

显然我按照说明操作：

sudo sysctl -w fs.inotify.max_user_instances=1024
sudo sysctl -w fs.inotify.max_user_watches=12288

并成功收到了我的QR码。

Answer 2

如果您不想安装Watchman，只需键入以下命令即可对其进行修复

sudo sysctl -w fs.inotify.max_user_instances=1024
sudo sysctl -w fs.inotify.max_user_watches=12288

React Native - npm start并没有开始

2 个答案: