I am trying to install ONLY the "devDependencies" listed in my package.json file. But none of the following commands work as I expect. All of the following commands install the production dependencies also which I do not want.
npm install --dev
npm install --only=dev
npm install --only-dev
I cannot think of any more ways of telling the npm to install the devDependencies alone. :(
Check the NPM docs for install:
With the
--productionflag (or when theNODE_ENVenvironment variable is set to production), npm will not install modules listed indevDependencies.The
--only={prod[uction]|dev[elopment]}argument will cause either only devDependencies or only non-devDependencies to be installed regardless of the NODE_ENV.
Have you tried the following?
npm install --only=dev
npm install npm -g and --only=dev option worked like a charm. Thanks for the response.
--only=dev is deprecated and will no longer work. I do not believe there is currently a way to install only the dev dependencies.
-D does still work, and it does so without complaint. It appears the -D is now the only way.npm i -D
An optional short version.
npm install -D and it worked. so I was surprised and googled this, after many answer I see your answer :)
npm i -D is doing what you expect. I can't see any reference to this in the documentation. I am assuming that the -D flag is being ignored and a normal npm i is being performed here. docs.npmjs.com/cli/v8/commands/npm-install-D is now the only way.npm install thePackageName --save-dev
This works fine for me.
--save-dev saves the package to the devDependencies in package.json
npm install thePackageName --save-dev
As of npm version 7.10.0 you can omit certain types of dependencies, however you cannot omit "the" dependencies (production) anymore. That's why there is no solution for this problem anymore.
npm install --omit=peer for example.The --only=dev option is no longer supported. To do the dev dependency install run npm install --production=false
npm install --production=false will install all dependencies including normal and dev as this is what you would want when not in production (when you are in development).In the latest version of npm there is no way to install just the dev dependencies. But there is a workaround which you can do.
You can create another package_dev.json file where you can put only devDependencies and keep the dependencies empty.
Than to install just the dev dependencies you can execute the below script
cp package.json temp.json && \
cp package_dev.json package.json && \
npm install && \
rm -rf package.json && \
cp temp.json package.json && \
rm -rf temp.json
I've got the similar requirement where I need to create a gitHub action and just wanted to install dev dependencies. The above workaround worked like charm for me.
The only Con of the approach is that you need to take care of updating the package_dev.json every time when there is an update in package.json file.
Running npm install, It will install all dependencies under devDependencies` or dependencies.
For installing and save packages as dev dependencies in package.json,
npm install package_name --save-dev or pass option -D
For installing all packages under devDependencies,
npm install --only=dev
For installing and save packages as prod or only dependencies in package.json,
npm install package_name --save-prod or pass option -P or npm install package_name
For installing all packages under dependencies or Prod dependencies,
set Environment variable NODE_ENV=production or pass it with the command NODE_ENV=production npm install or npm install --only=prod
Instead of using install in npm command like npm install you can just use i like npm i, short of install.
--devoption is deprecated. Use--only=devinstead.--production=falseinstead of the above.--production=falsedoes not solve the OP question: it installs dependencies and devDependencies, not ONLY devDependencies.