$ sudo npm install koa-json
$ sudo npm install -g koa-json

If want to update the koa-json package execute the command as below,

$ sudo npm update koa-json

Update package globally,

$ npm install -g koa-json

Git clone:

$ sudo  git clone https://github.com/rektide/koa-json.git

$ sudo  npm install -g ./koa-json

koa-json@2.0.2 /usr/lib/node_modules/koa-json

How to remove koa-json package :

You can uninstall or remove this package from your node_modules run the command as below,

$ sudo npm uninstall koa-json

Basic Information of koa-json NPM Package: