How can I fix WebStorm warning “Unresolved function or method” for “require” (Firefox Add-on SDK)

Question

I\'m using WebStorm 7 for Firefox Add-on SDK development.

WebStorm shows a warning: \"Unresolved function or method\" for require().

I want to g

Answer 1

On WebStorm 2016.3

1. Press ALT+F12 (open terminal)

2. Run this command:

   npm install require.js