blocks|key|2159417|text|在我的例子中，升级看门人没有帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2159418|此问题在更新Node.js后开始发生。|2159419|多亏了nvm，我回到了节点v8.11.3+(我更新到了12.0.4)，这个问题消失了。|offset|length|style|CODE|2159420|可能会帮助你们中的一些人有同样的问题..。|2159421|entityMap^0|0|0|3|3|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@$F|Q|G|R|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|M|$]]

In my case, upgrading watchman did not help.

This problem started to happen after having updated Node.js.

Thanks to <code>nvm</code>, I came back to node v8.11.3 (I updated to v12.0.4) and this issue disappeared.

That might help some of you having the same problem...

blocks|key|1316993|text|请关闭所有其他文件，然后再试一次。如果您在android上运行，请确保在运行cd+android和./gradlew+clean之前运行react-native+run-android。如果这不能修复，您的文件监视服务可能会出现问题。尝尝这个|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1316994|$+brew+update
$+brew+install+watchman|code-block|syntax|javascript|1316995|entityMap^0|12|A|1D|F|1W|O|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|U|8|@]|D|@]|E|$]]]|L|$]]

Just close all other files and try again. If you are running on android make sure to run <code>cd android</code> and <code>./gradlew clean</code> before <code>react-native run-android</code>. 
If this doesn't fix, there might be problem with your file watching service. Try this 

<pre><code>$ brew update
$ brew install watchman
</code></pre>

blocks|key|1317046|text|我正在使用Mac，并得到了EMFile错误。当我安装文件监视程序时，它被解析了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1317047|brew+install+watchman|offset|length|style|CODE|1317048|entityMap^0|0|0|L|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

I'm using a Mac and got the EMFile error. It was resolved when I installed the file watcher

<code>brew install watchman</code>

blocks|key|1949599|text|就我的情况而言，我认为此错误是由于节点升级而发生的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1949600|删除node_modules文件夹并运行npm+install解决了这个问题。|offset|length|style|CODE|1949601|entityMap^0|0|2|C|K|B|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]|$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|I|$]]

For my case, I think this error occurs due to node upgrade.
Delete <code>node_modules</code> folder and run <code>npm install</code> solved the issue.

blocks|key|1317087|text|我使用的是MAC和NodeV12.13.1。我把看门人升级了，问题就解决了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1317088|watchman+4.9.0_2+->+4.9.0_4|offset|length|style|CODE|1317089|entityMap^0|0|0|R|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

I'm using a MAC and Node v12.13.1. I upgraded watchman and the issue got resolved.
<code>watchman 4.9.0_2 -&gt; 4.9.0_4</code>

blocks|key|1949533|text|在升级我的节点版本后，我遇到了这个问题。在我的情况下，降级不是一个选择。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1949534|brew+install+watchman没有修复这个问题，因为我的机器上已经安装了看守人。brew+upgrade+watchman为我做了这个把戏。|offset|length|style|CODE|1949535|entityMap^0|0|0|L|1A|L|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]|$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|I|$]]

I had this issue after upgrading my node version. Downgrading was not an option in my case.
<code>brew install watchman</code> did not fix the issue, as watchman was already installed on my machine. <code>brew upgrade watchman</code> did the trick for me.

blocks|key|1317278|text|我需要像其他人一样用brew安装brew，但是我也需要用以下一行更新React+Native+Xcode+build+script：export+PATH=/opt/homebrew/bin:$PATH，这样xCode就可以在M1+MacBook+Pro中找到watchman。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1317279|响应本地Xcode构建脚本位置：./node_modules/react-native/scripts/react-native-xcode.sh|1317280|entityMap^0|A|4|G|4|Y|V|1U|Z|3M|8|0|G|1L|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|I|$]]

I needed to install <code>watchman</code> with <code>brew</code> as others have done here, however I also needed to update the <code>React Native Xcode build script</code> with this line: <code>export PATH=/opt/homebrew/bin:$PATH</code> so xCode could find <code>watchman</code> in my M1 MacBook Pro.
React Native Xcode build script location: <code>./node_modules/react-native/scripts/react-native-xcode.sh</code>

blocks|key|1949566|text|brew+install+watchman在一本Macbook上解决了这个问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1949567|我刚买了一本新的Macbook，和一个Reactive原住民项目有着同样的问题。在Windows上，该项目运行良好，但在Mac中，使用npm+start运行该项目几秒钟后，该项目因以下错误而崩溃：|1949568|Error:+EMFILE:+too+many+open+files,+watch
++++at+FSEvent.FSWatcher._handle.onchange+(internal/fs/watchers.js:178:28)
npm+ERR!+code+ELIFECYCLE
npm+ERR!+errno+1
npm+ERR!+@+start:+`expo+start`
npm+ERR!+Exit+status+1
npm+ERR!+
npm+ERR!+Failed+at+the+@+start+script.
npm+ERR!+This+is+probably+not+a+problem+with+npm.+There+is+likely+additional+logging+output+above.|code-block|syntax|javascript|1949569|PS：npm+install没有起作用。它必须和brew+install在一起。|1949570|entityMap^0|0|L|0|0|0|3|B|O|C|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

TLTR: <code>brew install watchman</code> solved it on a Macbook.
I just got a new Macbook and was having the same issue with a React Native project. On Windows the project was working perfectly but in Mac, after a few seconds of running the project with npm start, it crashed with this error:
<pre><code>Error: EMFILE: too many open files, watch
 at FSEvent.FSWatcher._handle.onchange (internal/fs/watchers.js:178:28)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @ start: `expo start`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the @ start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
</code></pre>
PS: <code>npm install</code> didn't work. It has to be with <code>brew install</code>.

blocks|key|1317216|text|对我来说，一个简单的upgrade+watchman没有帮助，也没有改变我的节点版本。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1317217|我在M1+Mac上使用XCode+12.5构建，不得不：|1317218|在使用x86_64实例时安装看门员|unordered-list-item|1317219|在罗塞塔航站楼运行地铁服务器|1317220|运行XCode+而没有+Rosetta|BOLD|1317221|如果这是第一次使用x86_64实例安装软件包，请记住将其添加到您的路径中。|1317222|entityMap^0|A|G|0|0|0|0|8|3|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|X|8|@]|D|@]|E|$]]|$1|K|3|L|5|J|7|Y|8|@]|D|@]|E|$]]|$1|M|3|N|5|J|7|Z|8|@$9|10|A|11|B|O]]|D|@]|E|$]]|$1|P|3|Q|5|6|7|12|8|@]|D|@]|E|$]]|$1|R|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|S|$]]

For me, a simple <code>upgrade watchman</code> didn't help, and neither did changing my Node version.
I was building on an M1 Mac using XCode 12.5 and had to:
<ul>
<li>Install watchman on using an x86_64 instance of homebrew</li>
<li>Run the metro server in a Rosetta terminal</li>
<li>Run XCode without Rosetta</li>
</ul>
If this is the first time you're installing a package using the x86_64 instance of homebrew remember to add it to your PATH.

blocks|key|1949485|text|在安装PHP之后，我有很多这样的错误，以及其他类似于找不到"Podfile.lock“之类的错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1949486|我做了以下工作，以便根据StackOverflow搜索的组合更正错误：|1949487|下载、安装和同意XCode许可证|ordered-list-item|1949488|通过brew.sh的终端窗口安装brew|1949489|安装节点|1949490|遵循iOS终端窗口在PHPStorm中的说明|1949491|开始工作了！|1949492|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|T|8|@]|9|@]|A|$]]|$1|I|3|J|5|F|7|U|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|V|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|W|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|P|$]]

I had a bunch of these errors along with others like Could not find &quot;Podfile.lock&quot;, etc. after installing PHP Storm.
I did the following to correct the errors based off a combination of StackOverflow searches:
<ol>
<li>Download, install, and agree to the XCode license</li>
<li>Install brew via the terminal window at brew.sh</li>
<li>Install node</li>
<li>Followed the instructions in the iOS terminal window in PHPStorm</li>
</ol>
Now working!

blocks|key|1949638|text|我通过macports安装了看门人。然而，对于“捆绑反应本地代码和图像”构建阶段来说，通向守望者的道路是未知的。添加|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1949639|export+PATH=/opt/local/bin:$PATH|code-block|syntax|javascript|1949640|脚本的开头为我解决了这个问题。|1949641|entityMap^0|3|8|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

I had watchman installed via <code>macports</code>. However the path to watchman was unknown to to the &quot;Bundle React Native code and images&quot; Build Phase.
Adding
<pre><code>export PATH=/opt/local/bin:$PATH
</code></pre>
to the beginning of the script fixed the issue for me

blocks|key|1317294|text|尝试"brew安装看门人“命令，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1317295|如果"brew“未安装，请执行以下步骤|1317296|跟着这一步，这是为我工作的。|offset|length|1317297|entityMap|0|LINK|mutability|MUTABLE|url|https://5balloons.info/correct-way-to-install-and-use-homebrew-on-m1-macs/^0|0|0|2|3|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@$F|S|G|T|1|U]]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

Try &quot;brew install watchman&quot; command,
if &quot;brew&quot; not install then follow below steps
Follow <a href="https://5balloons.info/correct-way-to-install-and-use-homebrew-on-m1-macs/" rel="nofollow noreferrer">this steps</a>, This is worked for me.

blocks|key|2159770|text|不管我做了什么，我都做不到。最后为我工作的是使用以下命令|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2159771|$+sudo+sysctl+-w+kern.maxfiles=10485760
$+sudo+sysctl+-w+kern.maxfilesperproc=1048576|code-block|syntax|javascript|2159772|发现地点：https://facebook.github.io/watchman/docs/install.html#mac-os-file-descriptor-limits|offset|length|2159773|我有一个M1专业。希望这对某人有帮助。|2159774|entityMap|0|LINK|mutability|MUTABLE|url|https://facebook.github.io/watchman/docs/install.html#mac-os-file-descriptor-limits^0|0|0|5|2B|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@$I|X|J|Y|1|Z]]|A|$]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

No matter what I did, I couldn't get this to work.
What ended up working for me is using the following command
<pre><code>$ sudo sysctl -w kern.maxfiles=10485760
$ sudo sysctl -w kern.maxfilesperproc=1048576
</code></pre>
Found at: <a href="https://facebook.github.io/watchman/docs/install.html#mac-os-file-descriptor-limits" rel="nofollow noreferrer">https://facebook.github.io/watchman/docs/install.html#mac-os-file-descriptor-limits</a>
I have a M1 Pro.
Hope this is helpful to someone.

blocks|key|1949522|text|在MacOS上，以下步骤对我有用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1949523|从官方网站https://brew.sh/更新/安装Homebrew|ordered-list-item|offset|length|1949524|安装看守:+brew安装看门人|1949525|entityMap|0|LINK|mutability|MUTABLE|url|https://brew.sh/^0|0|5|G|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@$E|S|F|T|1|U]]|A|$]]|$1|G|3|H|5|D|7|V|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P]]]]

The following steps worked for me on MacOS:
<ol>
<li>Updateing/Installing Homebrew from official site <a href="https://brew.sh/" rel="nofollow noreferrer">https://brew.sh/</a></li>
<li>Installing Watchman: brew install watchman</li>
</ol>

blocks|key|2159559|text|在我的例子中，在我将开发机器从Linux切换到OS之后，我得到了这个错误。在我运行brew+upgrade+watchman之前，上述所有这些都不适用于我。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2159560|entityMap^0|15|L|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

In my case I got this error after switching dev machines from Linux to OS X. None of the above worked for me until I ran <code>brew upgrade watchman</code>.

blocks|key|2159795|text|尝试了两个节点版本，但是给出了相同的错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2159796|brew+update+watchman|offset|length|style|CODE|2159797|帮助消除了这个错误。|2159798|entityMap^0|0|0|K|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

Tried with couple of node versions but giving same error.
<code>brew update watchman</code>
helped to get rid of this error.

blocks|key|1317385|text|在我的例子中，icu4c版本是错误的。我重新安装了icu4c，然后就成功了。下面是我使用的命令：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1317386|+brew+reinstall+icu4c|code-block|syntax|javascript|1317387|entityMap^0|P|5|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

In my case, the icu4c version was wrong. I reinstall <code>icu4c</code> then it's worked. Here is the command which I used:
<pre><code> brew reinstall icu4c
</code></pre>

blocks|key|2159811|text|在码头内工作：-n+2048|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2159812|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Works inside docker: ulimit -n 2048

blocks|key|2159855|text|什么都试过了但什么都没变。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2159856|2天后->|2159857|只有killall节点和|offset|length|style|BOLD|2159858|重新启动您的计算机，它对我有效。|2159859|entityMap^0|0|0|2|9|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@$F|Q|G|R|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|M|$]]

Tried everything but nothing changed.
After 2 days -&gt;
Just killall node and
restart your computer and it works for me.

I try to run a react-native-cli project using react-native start, and the metro bundler fails, saying the following: 

<pre><code>events.js 187
throw er; //Unhandled 'error' event

Error: EMFILE: too many open files, watch

Emitted 'error' event on NodeWatcher isntance at:
 at NodeWatcher: checkedEmitError (.../react-native-project/node_modules/sane/src/node_watcher.js:143:12)
 at FSWatcher.emit (events.js:210:5)
 at FSEvent.FSWatcher:_handle onchange (internal/fs/watchers.js:129:12) {
 errno: -24,
 syscall: 'watch',
 code : 'EMFILE',
 filename: null
)
Process terminated. Press &lt;enter&gt; to close the window
</code></pre>

Error: EMFILE: too many open files - React Native CLI

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我尝试使用react-本机启动运行一个react本机-cli项目，而metro bundler失败了，说明如下：events.js 187throw er; //Unhandled 'error' eventError: EMFILE: too many open files, watchEmitted 'error' event on NodeWatcher isntance at:     a

问错误: EMFILE:太多打开的文件-反应本机CLI
EN

回答 19

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问错误: EMFILE:太多打开的文件-反应本机CLIEN

回答 19

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问错误: EMFILE:太多打开的文件-反应本机CLI
EN