How to solve react startup error "cannot find module 'which'"? - reactjs

Hitting npm start in cmd in my project directory is giving the above error.
I tried npm install -g which but that did not work.
Screenshot of cmd
Screenshot of the complete error log

Note:Please make a backup before applying these commmands.
These commands can help:
1)npm cache clean --force
2)remove/delete your node modules folder
3)npm install
4)npm start

Related

I am trying to make my first react project using create-react-app but this problem seems to persist

The commands that I entered are
npx create-react-app p1
cd p1
npm start
and the error that I encountered is
Compiled with problems:
ERROR in ./src/logo.svg
Module build failed (from ./node_modules/#svgr/webpack/lib/index.js):
Error: EACCES: permission denied, open '/Users/rudra/.config/svgrrc'
I tried using the sudo before the command but it still didn't work. Is there a problem with npm package, should I try reinstalling it?
The problem is the file .config in your MAC
press> shift + cmd + g
search /Users/rudra/
unhide the file .config pressing cmd + shift + .
rename the file to "config" without dot
create a new file with this name ".config"
and restart your project npm start ;)

Why I am getting this error - Error: EPERM: operation not permitted, mkdir 'C:\Users\Aniket' command not found: create-react-app

I have installing react app using this command
$ npx create-react-app my-app
Then I got Error like this:
Error: EPERM: operation not permitted, mkdir 'C:\Users\Aniket'
command not found: create-react-app
I have seen some online resources they are saying I have to remove space from my Windows Username, isn't there any other way of make this work?
Make sure you've node>=8.10 and npm>=5.6 already installed
Try installing it globally first, using the command
npm install -g create-react-app
And then, you can create your app using the command,
npx create-react-app <Name of your app>
Hope this helps :)
Edit: Above solution might work but it's not recommended way of solving this issue. Please refer https://create-react-app.dev/docs/getting-started
I referred the solution given at bottom and some other posts to use below command:
npm config set cache "C:\Users\mycomputer~1name\AppData\Roaming\npm-cache" --global
The easiest way for me is:
mkdir C:\cache
npm config set cache "C:\\cache"
And then run the command again.
Go to c:/users open command prompt and run dir /x check shorter name you found with dir/x as shown in image and run npm config set cache "C:/Users/<shortname-you-found-with-dir/x>/AppData/Roaming/npm-cache" --global
In my case it's CYBERC~1.
this works fine in my case.

The command create-react-app doesn't run, it creates an error

$ npx create-react-app awesomeApp
Error: EPERM: operation not permitted, mkdir 'C:\Users\'
command not found: create-react-app
This is a bug within npm if you have your username as "FirstName LastName"
A quick fix for this is -
If your UserName is - Anand Chavan all you need to use at
is ANANDC~1. i.e FirstName+First_Letter_of_your
LastName+~1 (All in capital)
npm config set cache "C:\Users\<UserNameWorkAround>\AppData\Roaming\npm-cache" --global
Example config for - Anand Chavan as username.
npm config set cache "C:\Users\ANANDC~1\AppData\Roaming\npm-cache" --global
I faced the same issue as well in Windows. And I solved it as below:
It may be due to your username having space in between your username. If so, kindly try this in your command prompt if you're using Windows:
npm config set cache "C:\Users\Your Name\AppData\Roaming\npm-cache" --global
Thereafter, try again: npx create-react-app awesome
I encountered EPERM errors while trying to clean install create-react-app and running an older version of it.
Excluding the node_modules folder from Windows' Virus & Threat Protection (answer found here) and then running my terminal as an administrator fixed it for me.

Why I got Error while Creating React App?

I was new and want to learn ReactJS and I start to install a new empty folder with npx create-react-app . command. I have npm v.6.4.1. and when I try to execute the command, it gave me an error.
Error: EPERM: operation not permitted, mkdir 'C:\Users\LOGIVAR'
TypeError: Cannot read property 'get' of undefined
at errorHandler (C:\Program Files\nodejs\node_modules\npm\lib\utils\error-handler.js:205:18)
at C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js:78:20
at cb (C:\Program Files\nodejs\node_modules\npm\lib\npm.js:228:22)
at C:\Program Files\nodejs\node_modules\npm\lib\npm.js:266:24
at C:\Program Files\nodejs\node_modules\npm\lib\config\core.js:83:7
at Array.forEach (<anonymous>)
at C:\Program Files\nodejs\node_modules\npm\lib\config\core.js:82:13
at f (C:\Program Files\nodejs\node_modules\npm\node_modules\once\once.js:25:25)
at afterExtras (C:\Program Files\nodejs\node_modules\npm\lib\config\core.js:173:20)
at C:\Program Files\nodejs\node_modules\npm\node_modules\mkdirp\index.js:47:53
C:\Program Files\nodejs\node_modules\npm\lib\utils\error-handler.js:205
if (npm.config.get('json')) {
^
TypeError: Cannot read property 'get' of undefined
at process.errorHandler (C:\Program Files\nodejs\node_modules\npm\lib\utils\error-handler.js:205:18)
at process.emit (events.js:182:13)
at process._fatalException (internal/bootstrap/node.js:485:27)
Install for create-react-app#latest failed with code 7
I already do the same command on Laravel empty project, but I still gives me the same error.
Can you tell me what's the main cause problem and how to fix this?
EDIT: I already run the terminal as administrator, but I receive another error:
npm ERR! code ENOLOCAL
npm ERR! Could not install from "2\AppData\Roaming\npm-cache\_npx\10552" as it does not contain a package.json file.
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\LOGIVAR TY 2\AppData\Roaming\npm-cache\_logs\2019-01-23T04_18_56_036Z-debug.log
Install for create-react-app#latest failed with code 1
In my case the actual issue was due to the presence of a space in my windows user name folder. Which also appears to be the case here by looking at the first line of the stack trace,
Error: EPERM: operation not permitted, mkdir 'C:\Users\LOGIVAR'
Since there is no directory present named LOGIVAR its trying to run mkdir, for which its getting operation not permitted.
Following is how i fixed it thanks to citoreek, g8up & gijswijs
run npm config edit to edit your config, this will open up a text file in notepad or your configured editor,
then change cache path from
; cache=C:\Users\Gijs van Dam\AppData\Roaming\npm-cache
to
cache=C:\Users\GIJSVA~1\AppData\Roaming\npm-cache
Remember to remove the ; at the start,
next question would be how do we know to replace our user name with GIJSVA~1?
There are a couple of ways to target this,
Go to C:\Users open power Shell and execute following command
cmd /c dir /x
what this does is, list down all the directories in current directory along with their short names which aren't supposed to contain any spaces and normally are 6 characters or less in length. Copy that short name against your user name directory and use this in your cache path.
You will notice these short names only exist for directories either containing spaces or which are longer than 6 characters, for the rest of the directories their short names will be same as their directory name,
If you don't want to use above command, then simply remove all the spaces from your user name in your cache path, then take the first 6 characters of the user directory name and postfix it with ~1. You should also uppercase it, but it appears not to be making any difference.
After you are done with editing this file, save your changes then try again after closing any active power shell / bash process and reopening them.
First to install globally
npm install -g create-react-app
Create your new app
npx create-react-app your-app-name
this worked for me
Have you tried running this as admin?
add project name like this in your command:
npx create-react-app your-project-name
This is an issue with npx. Your computer name has a space in it. I'd recommend npm install -g create-react-app to get around the npx issue.
The above stated problem is due to the white space contained in the folder name. Best way is to make changes the config file.
Enter npm config edit to enter into your config file
Then change
; cache=C:\Users\Sinojia Zeel\AppData\Roaming\npm-cache
to
cache=C:\Users\SINOJI~1\AppData\Roaming\npm-cache
Don't forget to remove semi-colon from the front
The SINOJI~1 can be replaced with your folder name that contains white space.
Just take first 6 letters of your file name and in suffix add ~1(Capitalizing the file name is optional but often it is done)
Save the file and exit and re-run the npx create-react-app . command.
The below command worked for me:
npm install -g create-react-app
npx create-react-app project-name
If you are still facing this issue, after all of the above -
I had the same issue with the space in my name, I tried:
npm cache clear -f
npm cache verify
updated the cache path with the "~!"
And none of that worked for me, but then I ran:
npm -g install npm
npm init react-app my-app
... and it worked finally. Hope this helps someone out there
First install create-react-app
npm install create-react-app
then
npx create-react-app app-name
I ran into a similar issue while creating a React app from Linkedin Learning it had the command -
npx create-react-app my-website --use-npm
to create a new React application but didn't mention if it required any prerequisite.
So in order to run the above command, first install the create-react-app with
npm install -g create-react-app
I was also getting the same error:
Error: EPERM: operation not permitted, mkdir 'C:\Users\Username'
command not found: create-react-app
Then the below command worked for me:
npm install -g create-react-app
npx create-react-app project-name
Check your node version. If you are using like node v14 it might be the problem. In my case, since I switch between different versions with NVM, I than realized that I was using v14 rather than v16+.
To see your current node version, open your terminal and type:
node -v

error An unexpected error occurred: "EACCES: permission denied

I am getting an error while running npm install for a react application:
An unexpected error occurred: "EACCES: permission denied, unlink
'/home/ats/react-app/myapp/node_modules/#babel/helper-module-imports/LICENSE'".
Can someone help me sort this error out?
I had the same problem and I solved it like this:
Remove node_modules folder of your project manually.
Then yarn install or npm install.
Try changing the folder permissions to have the correct ones. If you consider there is no drawback to have the folder with full permissions this command should solve your problem:
sudo chmod -R 777 folderName
Execute as sudo if you are using Linux.

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