Fix EMF File Error: Too Many Open Files in React Native Expo

EMF 파일 오류를 해결하려면 종종 `brew upgrade`, `brew install watchman`, `npm install`이 필요합니다.

### `EMFILE 오류 해결: 너무 많은 파일 열림`
* 📱 **EMFILE 오류**: 너무 많은 파일이 열려 발생하는 오류입니다. 5~7개 이상의 파일이 열려있다면 닫고 다시 시도해보세요.
* 💻 **Watchman 및 Brew 재설치**: 위 방법으로 해결되지 않으면 명령 프롬프트를 열고 Watchman과 Brew를 재설치합니다.  먼저 `brew upgrade`로 Brew를 업데이트한 후 `brew install watchman`으로 Watchman을 설치하세요.
* 🛠️ **Brew 업데이트 및 Watchman 설치**: Brew 업그레이드 후 Watchman 설치 과정을 영상에서 보여줍니다.  4개의 공식이 업데이트되었습니다.
* 📁 **node_modules 폴더 삭제**: Brew와 Watchman 설치 후에도 오류가 지속되면 `node_modules` 폴더를 삭제하고 `npm install` 명령어로 모듈을 재설치합니다.
* 🚀 **앱 실행**: `npm install` 후 `npx expo start` 명령어로 앱을 실행합니다.  이 과정을 통해 번들링을 확인하고 앱을 실행할 수 있습니다.
* 💡 **해결 방법 요약**:  `brew upgrade`, `brew install watchman`, `node_modules` 삭제 및 `npm install` 순으로 문제 해결을 시도해보세요.  이 중 하나가 문제를 해결할 것입니다.
* 🤔 **추가 질문**: 질문은 댓글로 남겨주세요.
* 👍 **영상 요약**:  **EMFILE 오류**는 여러 파일이 열려 발생하며, Brew 및 Watchman 업데이트 또는 `node_modules` 재설치로 해결 가능합니다.

to this error, which is error EMF file, too many open files, watch at this FS event. FS Watcher, you need to

first look at and see if you have opened more than probably five to seven files. You need to close all and try and

see if you try and it keeps showing like that, then you need to open your command prompt and try to

reinstall uh, Watchman and Brew. But what you have to do first is to try to renew/upgrade your Brew first, then you

try to see if you can uh, if you can install the Watchman as well. So, but mostly it's either the Watchman or you

need to simply update uh, the Brew. So first, in order to be safe, just try to update the Brew first, then

after that you will you would install the Watchman after that. So, as you can see uh, I just did an upgrade for the

brew and I'll try to uh, install the Watchman after this. So uh, so Brew is upgraded, so four

updated uh, formulae installed. So let's look at Brew install, install Watchman uh, yeah, I type in Watchman here.

So yeah, so I'm trying to double check with that the upgrade and then install before I will run this again. So let's

wait for some couple of minutes. So it's going to check everything and then see if you have no Brew in store; it's going

to install everything from scratch. So just hold on for a little while and then I will run that real quick here, just a

minute. I'll be right back, just a minute, just a minute and then we'll continue with this. I have done that; it is

installing uh, the Brew and then installing the Watchman and it still does not work. Pay attention to this

because this is most, most others, others do not get this to work for them. That is a real update after the update they did.

can't get this to work. So what you have to do, if it still does not work after you've installed Brew and

then you have installed Watchman, which I just did in the video. Uh, let me see, the other command is

here. After the Brew install, I run `brew upgrade`, so and then I did the Watchman install. So if you do

all this and it still does not work, what you have to do is to simply delete the

node_modules folder. Just delete that, move it to trash. Then you go to the command line here and

then type `npm install`. `npm install` and that will reinstall the modules back. And after it does the `npm

restore`, which is going to bring a new `node_modules` folder here. So let's wait for it to install. Now that it is done, now

you can run `npx expo start`.  `npx expo start`. Then you click enter. So one of these should solve your

problems. One of these should solve your problem for you. So I go, then this one opens for me. Yeah, there it seems

there's a delay there, but it's checking the bundle and then it opens. So this is what solves this kind of error. So I want to go back again and then once more take you through it. First I said, if you

do, if you do `brew upgrade` first, just run that first: `brew upgrade`. Then you wait for it to

install. So if `brew upgrade` does not work, then you go ahead and try `brew install watchman`. 

So `brew install watchman`. After you install this and it still does not work, just leave it alone and go and delete the `node_modules` folder.

That's what I just did. After you have deleted that into the trash, now you run `npm install`.

And uh, you just run `npm install`. After this, then you can run your `npx`. After this, you run your `npx`

just to start, you know, just to start your app. After this, you run `npx expose` that ES module, then you'll get your

code running. So this is all you've got to do when you have a problem with that kind of error. Peace! If you have

any questions, leave it in a comment and then I'll get back to you. Any problem, just leave it in a comment and

Error: EMFILE: too many open files, watch  Starting Metro Bundler -  thrower React JS / React Native

Tech Now Tv

EMFILE 오류 해결 위한 초기 단계

EMFILE 오류(열려있는 파일 수 초과) 발생 시, 열린 파일 수 확인 (5~7개 이상일 경우 닫기)

파일 닫기 후에도 오류 지속 시, 명령 프롬프트에서 Watchman 및 Brew 재설치 시도

Brew 업데이트 후 Watchman 설치 시도 (Watchman 또는 Brew 업데이트가 문제 해결에 효과적)

Brew 업데이트 우선 진행 후 Watchman 설치 권장

Brew 업그레이드 진행 후 Watchman 설치

Brew install Watchman 명령어를 사용하여 Watchman 설치

설치 과정 중 Brew store 확인 및 필요시 재설치

Brew 및 Watchman 설치 후에도 오류 지속 시 추가 조치 필요

Brew 및 Watchman 설치 후에도 문제 해결이 안될 경우 node_modules 폴더 삭제

명령 프롬프트에서 npm install 명령어 실행하여 모듈 재설치

문제 해결 과정 요약 및 재확인

위 방법으로 해결되지 않을 시 node_modules 폴더 삭제 후 npm install 실행

앱 실행을 위한 npx 명령어 실행

추가 질문은 댓글로 남겨달라는 요청