How do you reinstall an app's dependencies using npm?
node.jsNpmnode.js Problem Overview
Is there a simple way to reinstall all packages that my app depends on (i.e. they are in my apps node_modules folder)?
node.js Solutions
Solution 1 - node.js
The easiest way that I can see is delete node_modules folder and execute npm install.
Solution 2 - node.js
The right way is to execute npm update. It's a really powerful command, it updates the missing packages and also checks if a newer version of package already installed can be used.
Read Intro to NPM to understand what you can do with npm.
Solution 3 - node.js
Most of the time I use the following command to achieve a complete reinstall of all the node modules (be sure you are in the project folder).
rm -rf node_modules && npm install
You can also run npm cache clean after removing the node_modules folder to be sure there aren't any cached dependencies.
Solution 4 - node.js
npm updated the CLI command for install and added the --force flag.
npm install --force
The --force (or -f) argument will force npm to fetch remote resources even if a local copy exists on disk.
See npm install
Solution 5 - node.js
You can do this with one simple command:
npm ci
Here's an excerpt from npm ci documentation:
> In short, the main differences between using npm install and npm ci are:
> - The project must have an existing package-lock.json or npm-shrinkwrap.json.
> - If dependencies in the package lock do not match those in package.json, npm ci will exit with an error, instead of updating the package lock.
> - npm ci can only install entire projects at a time: individual dependencies cannot be added with this command.
> - If a node_modules is already present, it will be automatically removed before npm ci begins its install.
> - It will never write to package.json or any of the package-locks: installs are essentially frozen.
Solution 6 - node.js
As of npm cli v6.5.0 you can use the backronym:
npm clean-install
Sources:
https://github.com/npm/cli/releases/tag/v6.5.0 https://github.com/npm/cli/commit/fc1a8d185fc678cdf3784d9df9eef9094e0b2dec
Solution 7 - node.js
You can use the reinstall module found in npm.
After installing it, you can use the following command:
reinstall
The only difference with manually removing node_modules folder and making npm install is that this command automatically clear npm's cache. So, you can get three steps in one command.
upd: npx reinstall is a way to run this command without globally installing package (only for npm5+)
Solution 8 - node.js
Delete node_module and re-install again by command
rm -rf node_modules && npm i
Solution 9 - node.js
For Windows you can use
(if exist node_modules rmdir node_modules /q /s) && npm install
which removes node_modules directory and performs npm install then. Removal before install assures that all packages are reinstalled.
Solution 10 - node.js
Follow this step to re install node modules and update them
works even if node_modules folder does not exist. now execute the following command synchronously. you can also use "npm update" but I think this'd preferred way
npm outdated // not necessary to run this command, but this will show outdated dependencies
npm install -g npm-check-updates // to install the "ncu" package
ncu -u --packageFile=package.json // to update dependencies version in package.json...don't run this command if you don't need to update the version
npm install: will install dependencies in your package.json file.
if you're okay with the version of your dependencies in your package.json file, no need to follow those steps just run
npm install