All Questions
25,801
questions
5393
votes
22
answers
1.9m
views
What's the difference between tilde(~) and caret(^) in package.json?
After I upgraded to the latest stable node and npm, I tried npm install moment --save. It saves the entry in the package.json with the caret ^ prefix. Previously, it was a tilde ~ prefix.
Why are ...
- 91.3k
3093
votes
16
answers
1.2m
views
What is the --save option for npm install?
I saw some tutorial where the command was:
npm install --save
What does the --save option mean?
- 35.8k
3015
votes
32
answers
2.2m
views
Find the version of an installed npm package
How can I find the version of an installed Node.js or npm package?
This prints the version of npm itself:
npm -v <package-name>
This prints a cryptic error:
npm version <package-name>
...
- 33.2k
2923
votes
16
answers
1.0m
views
What's the difference between dependencies, devDependencies, and peerDependencies in NPM package.json file?
This documentation answers my question very poorly. I didn't understand those explanations. Can someone say in simpler words? Maybe with examples if it's hard to choose simple words?
Also added ...
- 47k
2807
votes
42
answers
1.7m
views
How can I update each dependency in package.json to the latest version?
I copied package.json from another project and now want to bump all of the dependencies to their latest versions since this is a fresh project and I don't mind fixing something if it breaks.
What's ...
- 32.7k
2481
votes
15
answers
1.1m
views
Do I commit the package-lock.json file created by npm 5?
npm 5 was released today and one of the new features include deterministic installs with the creation of a package-lock.json file.
Is this file supposed to be kept in source control?
I'm assuming it'...
- 45.8k
2171
votes
67
answers
2.4m
views
How can I update Node.js and npm to their latest versions?
I just installed Node.js and npm. I installed npm for access to additional Node.js modules. After I installed Node.js and npm, I noticed that neither were the latest versions available.
So my ...
- 21.9k
1765
votes
36
answers
2.9m
views
How do I completely uninstall Node.js, and reinstall from beginning (Mac OS X)
My version of node is always v0.6.1-pre even after I install brew node and NVM install v0.6.19.
My node version is:
node -v
v0.6.1-pre
NVM says this (after I install a version of node for the first ...
- 42k
1517
votes
23
answers
1.3m
views
Where does npm install packages?
Can someone tell me where can I find the Node.js modules, which I installed using npm?
- 21.3k
1511
votes
40
answers
703k
views
How to fix npm throwing error without sudo
I just installed node and npm through the package on nodejs.org, and whenever I try to search or install something with npm, it throws the following error unless I sudo the command. I have a feeling ...
- 18.3k
1458
votes
25
answers
1.1m
views
Sending command line arguments to npm script
The scripts portion of my package.json currently looks like this:
"scripts": {
"start": "node ./script.js server"
}
...which means I can run npm start to start the ...
user291545
1415
votes
24
answers
1.6m
views
How can I uninstall npm modules in Node.js?
As commonly known, any npm module can be installed by running a simple command: npm install <module_name>.
I have installed a few modules that I do not use any more and I just want to get them ...
- 15.4k
1268
votes
18
answers
513k
views
What is the difference between --save and --save-dev?
What is the difference between:
npm install [package_name]
and:
npm install [package_name] --save
and:
npm install [package_name] --save-dev
What does this mean? And what is really the effect of --...
- 12.8k
1234
votes
10
answers
1.2m
views
How to install a previous exact version of a NPM package?
I used nvm to download node v0.4.10 and installed npm to work with that version of node.
I am trying to install express using
npm install express -g
and I get an error that express requires node ...
- 14.6k
1044
votes
19
answers
773k
views
How to list npm user-installed packages?
How do I list the user-installed / environment package only in npm?
When I do npm -g list, it outputs every package and their dependencies. Instead I'd like to see the packages installed in the ...
- 17k
952
votes
12
answers
464k
views
Why does "npm install" rewrite package-lock.json?
I just recently upgraded to npm@5. I now have a package-lock.json file with everything from package.json. I would expect that, when I run npm install that the dependency versions would be pulled ...
- 11.8k
930
votes
34
answers
577k
views
Is there a way to get the version from the 'package.json' file in Node.js code?
Is there a way to get the version set in the package.json file in a Node.js application? I would want something like this
var port = process.env.PORT || 3000
app.listen port
console.log "Express ...
- 9,611
916
votes
12
answers
668k
views
Error "npm WARN package.json: No repository field"
I installed Express.js with the following command:
sudo npm install -g express
I get the following warnings:
npm WARN package.json [email protected] No repository field.
npm WARN package.json fresh@...
- 17.3k
913
votes
22
answers
1.1m
views
npm check and update package if needed
We need to integrate Karma test runner into TeamCity and for that I'd like to give sys-engineers small script (powershell or whatever) that would:
pick up desired version number from some config file ...
- 35.6k
876
votes
15
answers
609k
views
How do you prevent install of "devDependencies" NPM modules for Node.js (package.json)?
I have this in my package.json file (shortened version):
{
"name": "a-module",
"version": "0.0.1",
"dependencies": {
"coffee-script": ">= 1.1.3"
},
"devDependencies": {
"...
- 77.9k
852
votes
34
answers
297k
views
nvm keeps "forgetting" node in new terminal session
Upon using a new terminal session in OS X, nvm forgets the node version and defaults to nothing:
$ nvm ls:
.nvm
v0.11.12
v0.11.13
I have to keep hitting nvm use v.0.11.13 in ...
- 9,964
782
votes
8
answers
578k
views
How can I specify the required Node.js version in package.json?
I have a Node.js project that requires Node version 12 or higher. Is there a way to specify this in the packages.json file, so that the installer will automatically check and inform the users if they ...
- 35.9k
744
votes
43
answers
932k
views
Error: EACCES: permission denied, access '/usr/local/lib/node_modules'
What might be causing the error Error: EACCES: permission denied, access '/usr/local/lib/node_modules'?
npm ERR! path /usr/local/lib/node_modules
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! ...
- 7,584
742
votes
26
answers
482k
views
How to use executables from a package installed locally in node_modules?
How do I use a local version of a module in node.js. For example, in my app, I installed coffee-script:
npm install coffee-script
This installs it in ./node_modules and the coffee command is in ./...
- 56.6k
731
votes
20
answers
758k
views
Local dependency in package.json
I want to do something like this, so npm install also installs the package.json of ../somelocallib or more importantly its dependencies.
"dependencies": {
"express": "*&...
- 8,737
723
votes
63
answers
527k
views
Node Sass couldn't find a binding for your current environment
I am having issues building an app because node-sass keeps failing with the error.
ERROR in Missing binding /Users/warren/Sites/random-docs/my-cms/node_modules/node-sass/vendor/darwin-x64-11/...
- 9,644
685
votes
12
answers
520k
views
How do I override nested NPM dependency versions?
I would like to use the grunt-contrib-jasmine NPM package. It has various dependencies. Part of the dependency graph looks like this:
─┬ [email protected]
│ ├─┬ [email protected]
│...
- 29.5k
679
votes
11
answers
571k
views
Installing a local module using npm?
I have a downloaded module repo, I want to install it locally, not globally in another directory?
What is an easy way to do this?
- 50.6k
674
votes
14
answers
413k
views
How to find unused packages in package.json?
Is there a way to determine if you have packages in your package.json file that are no longer needed?
For instance, when trying out a package and later commenting or deleting code, but forgetting to ...
- 8,121
663
votes
6
answers
305k
views
npm install vs. update - what's the difference?
What is the practical difference between npm install and npm update? When should I use which?
- 52.3k
620
votes
22
answers
1.0m
views
How to set environment variables from within package.json?
How to set some environment variables from within package.json to be used with npm start like commands?
Here's what I currently have in my package.json:
{
...
"scripts": {
"help": "tagove ...
- 8,960
600
votes
29
answers
1.8m
views
How can I update npm on Windows?
I tried this:
sudo npm cache clean -f
sudo npm install -g n
sudo n stable
...but it didn't work.
How do I do this on Windows?
- 14.2k
570
votes
10
answers
693k
views
How do you reinstall an app's dependencies using npm?
Is there a simple way to reinstall all packages that my app depends on (i.e. they are in my apps node_modules folder)?
- 45k
555
votes
22
answers
904k
views
How can I change the version of npm using nvm?
I've been using NVM to install the latest versions of Node.js for my Node.js work. It works totally fine for installing separate versions and switching between them. It also installs the latest ...
- 16.1k
534
votes
9
answers
620k
views
What does npm install --legacy-peer-deps do exactly? When is it recommended / What's a potential use case?
Just ran into this error:
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: [email protected]
npm ERR! Found: [email protected]
npm ERR! ...
- 7,028
532
votes
18
answers
862k
views
Node.js - SyntaxError: Unexpected token import
I don't understand what is wrong.
Node v5.6.0
NPM v3.10.6
The code:
function (exports, require, module, __filename, __dirname) {
import express from 'express'
};
The error:
SyntaxError: ...
- 5,509
529
votes
33
answers
691k
views
Can't run my Node.js Typescript project TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts" for /app/src/App.ts
When I try to start my app on Heroku I got the following stack trace.
It is just a basic ts.app like you see with ts-node and nodemon.
I am really interested in what the answer is going to be.
2020-05-...
- 5,353
527
votes
4
answers
360k
views
npm command to uninstall or prune unused packages in Node.js
Is there a way to simply uninstall all unused (undeclared) dependencies from a Node.js project (ones that are no longer defined in my package.json.) When I update my application I like to have the ...
- 16.8k
526
votes
16
answers
1.0m
views
How to clean node_modules folder of packages that are not in package.json?
Assume I install project packages with npm install that looks into package.json for modules to be installed. After a while I see that I don't need some specific module and remove its dependency from ...
- 53.1k
525
votes
19
answers
259k
views
Cannot install packages using node package manager in Ubuntu
NodeJS interpreter name(node) on Ubuntu has been renamed to nodejs because of a name conflict with another package. Here's what the readme. Debian says:
The upstream name for the Node.js ...
- 6,099
501
votes
51
answers
1.5m
views
How to solve npm error "npm ERR! code ELIFECYCLE"
I'm trying to learn react, so I have this sample code for the full-stack react voting app, and I am trying to get it to work but after running npm install followed by npm start I receive the following ...
user7037425
489
votes
9
answers
568k
views
How to specify local modules as npm package dependencies
I have an application which has the usual set of dependencies on third party modules (e.g. "express") specified in the package.json file under dependencies. E.g.
"express" : "...
- 5,617
488
votes
9
answers
1.1m
views
How to completely remove node.js from Windows
I uninstalled my previous version of node.js (0.8.11) and downloaded the latest, 0.10.24 from the node.js website and installed it. However, after running node --version, it still indicates that I'm ...
- 7,239
472
votes
13
answers
464k
views
How to properly upgrade node using nvm
Is it possible to upgrade node right in place, instead of manually installing the latest stable version?
I have installed node.js version 5.0 with nvm, but now I want to update it to 5.4. I'm trying ...
- 14.1k
468
votes
31
answers
616k
views
Command to remove all npm modules globally
Is there a command to remove all global npm modules? If not, what do you suggest?
- 20.4k
456
votes
62
answers
691k
views
npm ERR cb() never called
I have a Node.js app hosted on Heroku. Every time I do a git push heroku I get the following error:
Counting objects: 14, done.
Delta compression using up to 6 threads.
Compressing objects: 100% (12/...
- 4,771
453
votes
13
answers
365k
views
Is there a way to automatically build the package.json file for Node.js projects
Is package.json supposed to be manually edited? Couldn't a program like npm just look through the files, see the "require" statements, and then use that to put the necessary entries in the package....
- 55k
437
votes
10
answers
272k
views
npm - how to show the latest version of a package
How do I use npm to show the latest version of a module? I am expecting something like npm --latest express to print out v3.0.0.
- 9,010
433
votes
5
answers
540k
views
Node update a specific package
I want to update my Browser-sync without updating all my node packages. How can I achieve this? My current version of Browser-sync does not have the Browser-sync GUI :(
├─┬ [email protected]
│ ├── ...
- 5,859
432
votes
23
answers
595k
views
Can pm2 run an 'npm start' script
Is there a way for pm2 to run an npm start script or do you just have to run pm2 start app.js
So in development
npm start
Then in production with pm2 you would run something like
pm2 start 'npm start'...
- 23.9k