I've got a new install of Sylius that I'm working with. I just installed NPM and Gulp, and wanted to run Gulp for the first time. I'm getting an error, and have never worked with Gulp or Sylius before, so it's a little hard for me to understand:
gulp
module.js:328
throw err;
^
Error: Cannot find module 'gulp-if'
at Function.Module._resolveFilename (module.js:326:15)
at Function.Module._load (module.js:277:25)
at Module.require (module.js:354:17)
at require (internal/module.js:12:17)
at Object.<anonymous> (/var/www/mysite.com/public_html/Gulpfile.js:2:14)
at Module._compile (module.js:410:26)
at Object.Module._extensions..js (module.js:417:10)
at Module.load (module.js:344:32)
at Function.Module._load (module.js:301:12)
at Module.require (module.js:354:17)
at require (internal/module.js:12:17)
This is happening on a Ubuntu system, but it also seems to be throwing the same error on my Mac, with a copy of the same Sylius install on it.
try running npm i -S gulp-if in your project. What this does is install the gulp-if package and saves it in your package.json file