Not able to install postcss-plugin in node app

Question

I'm trying to use css-declaration-sorter but cant get it to install. I have tried installing both postcss-cli and running npx both globally and locally and keep getting error "Plugin Error: Cannot find module 'css-declaration-sorter'. Here is a snapshot of what I am running:

I have tried adding path to css-declaration-sorter put to no avail. If I try using postcss like in example on page I get "postcss command not found." Any input on how to get this to work much appreciated.

Answer 1

Try installing postcss-cli locally:

$ npm i -D postcss-cli

Then run your command again.