How do you uninstall all dependencies listed in package json NPM

Question

If I have a package json file defined in my application root and run npm install -g it will install all the dependencies defined in package json  globablly   However  this doesn t seem to work in reverse   If I do npm uninstall -g in my application root it throws an error  expceting me to pass it a package name   Shouldn t this also uninstall the same packages I installed   Am I doing something wrong

User · Answer

Don t replicate these steps till you read everything   For me all mentioned solutions didn t work  Soo I went to  usr lib and run there   for package in  ls node modules   do sudo npm uninstall  package  done    But it also removed the npm package and only half of the packages  till it reached letter n    So I tried to install node again by the node guide      Using Ubuntu curl -sL https   deb nodesource com setup 12 x   sudo -E bash - sudo apt-get install -y nodejs   But it didn t install npm again    So I decided to reinstall whole node sudo apt-get remove nodejs And again install by the guide above   Now is NPM again working but the global modules are still there  So I checked the content of the directory  usr lib node modules and seems the only important here is npm  So I edited the command above to uninstall everything except npm  for package in   ls node modules   do if     package      npm     then sudo npm uninstall  package  fi  done    It removed all modules what were not prefixed    Soo I extended the loop for subdirectories   for package in   ls node modules   do if      package 0 1          then          for innerPackage in   ls node modules   package    do                 sudo npm uninstall   package  innerPackage           done  fi  done    My  usr lib node modules now contains only npm and linked packages

User · Answer

Since this is still the first result on the Googler when searching how to remove all modules in NPM  I figured I d share a small script for Powershell to remove all dependencies through NPM   Create a Packages Array to add package names to  Packages   New-Object System Collections ArrayList   Get all Production Dependencies by name  Get-Content   Package json   ConvertFrom-JSON  dependencies psobject properties name   ForEach-Object    Packages Add       Out-Null     Get all Dev Dependencies by name  Get-Content   Package json   ConvertFrom-JSON  devDependencies psobject properties name    ForEach-Object    Packages Add       Out-Null     Remove each package individually Foreach  Package in   Packages   select -unique     npm uninstall  Package     Clean up any remaining packages  Modules   Get-ChildItem  quot node modules quot  if  Modules     Modules   ForEach-Object   Remove-Item  quot   node modules    quot  -Force -Recurse      This runs a more specific removal  rather than removing each module from node modules individually

User · Answer

If using Bash  just switch into the folder that has your package json file and run the following   for package in  ls node modules   do npm uninstall  package  done    In the case of globally-installed packages  switch into your  appdata  npm folder  if on Windows  and run the same command   EDIT  This command breaks with npm 3 3 6  Node 5 0   I m now using the following Bash command  which I ve mapped to npm uninstall all in my  bashrc file   npm uninstall  ls -1 node modules   tr    n         Added bonus  it s way faster   https   github com npm npm issues 10187

User · Answer

Actually there is no option to do that  if you want to uninstall packages from package json simply do npm ls on the same directory that package json relies and use npm uninstall  lt name gt  or npm rm  lt name gt  for the package you want to remove

User · Answer

Piggy-backing off of VIKAS KOHLI and jedmao  you can do this   single line version   npm uninstall  ls -1 node modules   grep -v      tr    n        find node modules    -type d -depth 1 2 gt  dev null   cut -d  -f2-3   tr   n         multi-lined version   npm uninstall    ls -1 node modules   grep -v      tr    n          find node modules    -type d -depth 1 2 gt  dev null   cut -d  -f2-3   tr   n

User · Answer

Even you don t need to run the loop for that   You can delete all the node modules by using the only single command -  npm uninstall  ls -1 node modules   tr    n

User · Answer

First  remove all packages from dependencies and devDependencies in package json Second  run npm install That simple

User · Answer

For windows  go to node modules dir and run this in powershell  npm uninstall  Get-ChildItem  Name

User · Answer

Tip for Windows users  Run this PowerShell command from within node modules parent directory   ls   node modules      npm uninstall

User · Answer

I recently found a node command that allows uninstalling all the development dependencies as follows   npm prune --production   As I mentioned  this command only uninstalls the development dependency packages  At least it helped me not to have to do it manually

User · Answer

This worked for me   command prompt or gitbash into the node modules folder in your project then execute   npm uninstall     Removed all of the local packages for that project

User · Answer

remove unwanted dependencies from package json npm i    npm i  will not only install missing deps  it updates node modules to match the package json

User · Answer

forcibly remove and reinstall all package dependencies ren package json package json-bak echo     gt  package json npm prune del package json ren package json-bak package json npm i   This essentially creates a fake  empty package json  calls npm prune to remove everything in node modules  restores the original package json and re-installs everything   Some of the other solutions might be more elegant  but I suspect this is faster and exhaustive  On other threads I ve seen people suggest just deleting the node modules directory  but at least for windows  this causes npm to choke afterward because the bin directory goes missing  Maybe on linux it gets restored properly  but not windows

User · Answer

Another SIMPLE option is to delete the node modules and package-lock json  rm -rf node modules rm -rf package-lock json   After this you can try reinstalling the npm packages

User · Answer

Powershell users   foreach  package in ls node modules  npm uninstall  package   Thanks  JustMailer

[node.js] How do you uninstall all dependencies listed in package.json (NPM)?

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