On windows for some reason when I run npm install
it won\'t install devDependencies. AFAIK it should. If I run npm install --dev
<
Check if npm config production value is set to true. If this value is true, it will skip over the dev dependencies.
Run npm config get production
To set it: npm config set -g production false
make sure you don't have env variable NODE_ENV
set to 'production'.
If you do, dev dependencies will not be installed without the --dev
flag
Check the NPM docs for install
With the
--production
flag (or when the NODE_ENV environment variable is set to production), npm will not install modules listed in devDependencies."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
npm install --only=dev
If you are worried that your package.json might be incorrect, best thing to do is this. Create a new folder, and run:
npm init --yes
Then:
npm install --save-dev brunch@^2.0.4
npm install --save-dev cssnano-brunch@^1.1.5
npm install --save-dev javascript-brunch@^1.8.0
npm install --save-dev sass-brunch@^1.9.2
npm install --save-dev uglify-js-brunch@^1.7.8
npm install jquery@^2.1.4 --save
And you should be good to go! Otherwise, will keep posting other options.
Check your npm configuration:
npm config list
npm gets its config settings from the command line, environment variables, and npmrc files. So check environment variables, and the npmrc file.
Still failing?
Ok, create a new folder, ideally somewhere else on your filesystem. ie. not in same folder hierarchy. For instance, C:\myNewFolder - the closer to the base C: drive the better.
Then run:
npm init --yes
Now run:
npm install underscore --save
and finally:
npm install mocha --save-dev
Does everything work as expected?
What I am trying to do is understand whether your problem is global, or something local to the previous folder and dependencies.
I had a similar problem. npm install --only=dev
didn't work, and neither did npm rebuild
. Ultimately, I had to delete node_modules
and package-lock.json
and run npm install
again. That fixed it for me.
You can use the short way for installation dependencies only for development as follows:
npm i -D <dependencies-names>
Make sure your package.json
is valid...
I had the following error...
npm WARN Invalid name: "blah blah blah"
and that, similarly, caused devDependencies
not to be installed.
FYI, changing the package.json
"name" to blah-blah-blah
fixed it.