How to fix requires a peer of grunt@~0.4.0 while installing grunt plugins?

Question

I am trying to install some Grunt plugins like grunt-contrib-clean and grunt-contrib-watch using npm install grunt-contrib-clean --save-dev and npm install grunt-contrib-watch --save-dev

I got these warnings:

npm WARN stellarhse@1.0.0 requires a peer of grunt@~0.4.0 but none is installed. You must install peer dependencies yourself.

npm WARN grunt-contrib-concat@0.3.0 requires a peer of grunt@~0.4.0 but none is installed. You must install peer dependencies yourself.

npm WARN grunt-contrib-cssmin@0.10.0 requires a peer of grunt@~0.4.1 but none is installed. You must install peer dependencies yourself.

How can I fix them?

Answer 1

I have fixed the problem,

• First, Ensured that the peer dependencies section in the package.json file is empty
• Second, I updated npm using

npm update

• Third, install grunt cli globally using

npm install -g grunt-cli.

• Finally switched to the path where the project in and complete installing grunt itself and the plugins I need and worked well.

npm install grunt --save-dev

npm install grunt-contrib-watch --save-dev

npm install grunt-contrib-clean --save-dev

Answer 2

In case this helps anyone with a similar problem I just received this error on a successful Grunt 1.0.4 install:

grunt-contrib-concat@0.1.3 requires a peer of grunt@~0.4.0 but none is installed

and none of the above answers worked, ie:

npm update
npm install grunt-contrib-concat --save-dev

did not resolve the problem / get the latest version

The only fix was to find THE LATEST VERSION of grunt-contrib-concat on git and overwrite explicitly:

grunt-contrib-concat@1.0.1 --save-dev

Answer 3

mostly you didn't installed grunt locally

try to install grunt locally by run this command

npm install grunt --save-dev