I just started working with vscode and npm/git. Someone on my team added a package and I did a pull to get his latest changes which put that package in my package.json file. When I ran the project I got errors for a module not being found. Obviously I need to install that package locally. Do I simply use npm install w/no arguments to get it? Or do I install it manually myself with npm install and version info? I ask because I don't know if npm install w/no args will create a new package.json or cause any issues.
What is the correct way to get a new package installed that someone added in the repo?
npm install can be run as many times as you like, and is what you should be doing here :)
npm install's purpose is to get your node_modules folder up-to-date with whatever is written in package.json
So, if your colleague has changed package.json (by installing something new and pushing the change to git), you can just run the command again to get up-to-date.
Provided you haven't directly fiddled with any files in node_modules (this folder should be left alone), it is always safe to run npm install as many times as you like, even if nothing has changed.
I'm working on an NPM package right now.
The main code for the package (repo/src/maincode.js) has a few dev dependencies and a few dependencies needed to run it. When the user installs the npm package (through npm i) these dependencies will need be installed.
Now, that being said, I also want to create a react project that showcases this npm package, and have it live in the same repo, in an examples directory (repo/examples/react/app.js). This react app may have its own dependencies and dev dependencies, but I really don't want all of these to be forced onto the user when they're installing my npm package just to use in their projects.
How might I go about solving this problem? Is there a way to create a set of dependencies that are only installed if you are running a particular script, or running example code ?
You can give the examples directory its own package.json file and instruct folks who want to run the examples to cd into the examples directory and run npm i there. Any code in the examples directory that imports a module will look in its own node_modules before checking the node_modules in the parent directory.
The MarkoJS examples repository takes this approach and even makes it more granular. Instead of having a single package.json for the examples directory, there is a package.json for each separate example.
If you want, you can create a helper script in the main package.json for the user so they can do something like npm run build-examples and it will do the npm install for them as part of the process.
I have a project in React. It is cloned from Git-lab. I consist of two separate aplications: backend and frontend. Question is simple. How to run it? It should contain Laravel implementation but I dont see anythind inside. Is there any npm commant I need to run? I think npm create-react-app is not the right command of exisiting aplication. I am sorry for this trivial question. This is my first contact with React.
If you see package-lock.json file, try npm install and npm start. If there is yarn.lock file, try yarn install and yarn start. You need to run "install" command only once (and after change of package.json).
I open Git Bash command window and when it is at the correct directory type NPM START. Being that you have both back and front end you would open two BASH windows and do this for each (backend first).
it simple,first of all you open terminal and type a npm run start command.application running started. then all done you will display the url then you entered in your browser it work.
When I want to create a react app I'm encountering the following error:
npm ERR! Response timeout while trying to fetch https://registry.npmjs.org/react-is (over 30000ms)
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\info\AppData\Roaming\npm-cache\_logs\2020-04-23T02_54_45_865Z-debug.log
Aborting installation.
npm install --save --save-exact --loglevel error react react-dom react-scripts cra-template has failed.
Deleting generated file... package.json
Deleting app2/ from C:\Users\info
Done.
Sounds like you have a slow connection. Try increasing the timeout from 30s to 60s by adding this to your .npmrc file:
timeout=60000
You could also try adding
prefer-offline=true
if you are trying to save bandwidth or have a slow connection
Note: if you don't have an .npmrc file setup yet, you can create one here
for Windows: C:\Users\{username}\.npmrc
for Mac/Linux ~/.npmrc
Or you can create one in the same directory as your project's package.json file.
I had a slow connection and I updated the timeout value to .npmrc using:
npm set timeout=100000
And to check if the value is updated (Mac): vi ~/.npmrc
Users are extremely likely to face this issue if they are on a slow internet connection. To counter this, you need to increase the timeout in the npm's config file. And here's how to do it:
Find the .npmrc file (located in the nodejs installation folder; in my case, it's in F:\Installations\nodejs\node_modules\npm folder. But for you, it might be in C:\program files folder).
Open the .npmrc file and append this line: timeout=240000 (usually it is 60 seconds I suppose, but since my connection was way slower therefore, I had to increase it to 240 seconds or 4 minutes, you can keep it 120000 for 120seconds)
Save the file
Since create-react-app fails midway, it can easily break npm's package.json file thus leading to this sort of issue:
Unexpected end of JSON input while parsing near
Therefore, before running the npx create-react-app, run the following command: npm cache clean --force as it cleans the cache and (i think) repairs the package.json file.
I was facing the same issue. I Solved it like this:
create a new file with no name just an extinction of .npmrc
open this file in any editor and type timeout = 90000
save the file and in you terminal type
npm cache clean --force
npm install create-react-app
npx create-react-app ./
Note: this error occurs because of slow internet speed
This error occurs due to slow internet connection. Try installing when you get a better speed. If better speed doesn't solve your problem try this.
npm cache verify
npm cache clean --force
I enabled IIS and the issue was solved for me:
do to Control Panel -> Programs -> Programs and Features
click on Turn Windows features on and off
make sure the Internet Information Services is checked
click OK and wait for some minutes
I was facing the same issue when create a react-app using npx create-react app . And i fixed my problem by running the following command.
npm cache clean --force
I hope you find this helpful
I fixed the problem by setting timeout in user local .npmrc file to
timeout=600000
90000 is not enough for downloading many packages for projects with lot dependencies in package.json
In case you are still running into this issue below with the error:
Invalid response body while trying to fetch
https://registry.npmjs.org/eslint-config-react-app: Socket timeout
Run this script: npm install react --registry=https://registry.npmjs.org
and then npx create-react-app mypp
for your react app installation. Happy coding
I fixed the problem by running:
npm config set registry "http://registry.npmjs.org" --global
It appears the problem is related to the following post:
npm install gets stuck at fetchMetadata
And #CptUnlucky's solution worked for me on macOS Catalina 10.15.7, node v16.0.0, npm v7.12.2, nvm v0.38.0
I was facing the same issue and I solved it by enabling the Internet Information service (IIS) feature of the window.
Enabling the IIS
Steps:
Windown + r
Type appwiz.cpl and click OK
click on Turn window features on or off (on the Left top side)
wait some seconds and check the Internet information service option
Now wait until window apply changes.
create project again.
I have faced the same issue. I tried all solutions over StackOverflow or Github discussions but nothing worked.
I changed the .npmrc file under the Users folder in C in Windows and changed the timeout from 30000 to 90000. See if 60000 works!
In my case it was the issue related to npm verison 6.14*
Downgrading to npm verison 6.13.7 solved for me
npm i -g npm#6.13.7
It's also an newly opened issue
you can check more details about it at
https://github.com/npm/cli/issues/1185
You just need to run npm i npm#6.13.7 or npm I -g npm#6.13.7 if you wanna this to be global version.
After that, just to make sure, run " npm -version " to see what version you are using.
Downgrading to npm version 6.13.7 worked for me.
Try this:
npm cache clean --force
npm config rm proxy
npm config rm https-proxy
And remove your node_modules within your user.
In Windows, it is
C:\Users\${select_your_user}\AppData\Roaming\npm\node_modules
I was facing the same issue when running npm install on Docker.
I had to pass the HTTP and HTTPS proxy values to the image while building it.
docker build --build-arg HTTP_PROXY=http://<your_company_proxy> --build-arg HTTPS_PROXY=http://<your_company_proxy>
It worked fine after I passed these parameters.
In my case it was the issue related to npm verison 6.14*
Downgrading to npm verison 6.13.7 solved for me
npm i -g npm#6.13.7
It's also an newly opened issue you can check more details about it at https://github.com/npm/cli/issues/1185
it is works for me
Editing the .npmrc file to 80000 works. If not, globally uninstall create-react-app:
"npm uninstall -g create-react-app" then run "npx create-react-app ./"
I recently have the same issue and following steps would help you.
npm config set registry "http://registry.npmjs.org" --global (sets registry) (Try Again)
Go to you user folder find .npmrc file there and remove content of it.
run npm cache clean --force
still errors - Remove the content of npm base folder usually inside User/AppData/roaming/npm/...
I tried everything including factory resetting my Mac. Then after reinstalling everything and still having the same issue, I typed into the terminal and ran:
npm set timeout=100000
then sat my computer next to my router and ran npx create-react-app again and it worked!
Sometimes it won't work if you use only letters in your app name e.g first I have used "myapp" and that was not working though I have done all the other stuffs correctly like set timeout = 240000 in .npmrc file and run the following commands
npm cache clean --force
npm install create-react-app
npx create-react-app myapp
but that not working for me then I have just changed my project name from myapp -> my-app and it worked perfectly. So, If you are facing the same issue try them out. Hopefully, it saves your time.
I tried many things for 3 days, then i figure out that new versions of nodejs doesn't work so fine for some computers, i downgrade to 16.0.0 and then worked
Regarding npx ...
If you have create-react-app (CRA) globally installed;
it is recommend you uninstall CRA
to ensure that npx always uses the latest version.
When using npx, the global installation isn't used.
But it may interfere (addressed below).
Don't run your React app from your desktop.
Some operating systems may throw an error.
Windows OS users ...
As administrator (for steps #1 & #2), inside your command-line ...
1) uninstall your global version of CRA.
npm uninstall -g create-react-app Mac prefix: sudo
2) Then ...
Run: npx create-react-app my-app Mac prefix: sudo
Above: This will create the latest version of
a React app named: my-app.
This app will be created wherever your command-line is pointing.
3) Open Google Chrome.
4) cd my-app (point your command-line to your project folder).
5) inside your command-line ... Run: npm start
I am trying to update a specific npm package - "react-beautiful-dnd" although I don't think there is a problem with it. When I run "npm -v react-beautiful-dnd" in my project's directory, I can see that it's "6.4.1". I inherited the project, so the version is probably the latest stable one at the time. I wanted to update it to the newest one - 10.0.0, so the first thing I did was changing the version in package.json to the desired and then running npm install (without --save, wisely or not).
Everything went through fine, but I when I run "npm -v ..." it still shows the same version. From what I know, the stable version of the package is much higher than 6.4.1, so I don't have a clue what's up with that. When I run npm list -g and try to find the package through cmd + f, I don't even have it on the list, so it's likely not a problem with that.
Any ideas?
Updating local packages
Navigate to the root directory of your project and ensure it contains a package.json file:
cd /path/to/project
In your project root directory, run the [update][npm-update] command:
npm update
To test the update, run the [outdated][npm-outdated] command. There should not be any output.
npm outdated
you can also check out npm package update Document.