To update whatever you added or removed to package.json run this:
npm updateInstalling Gulp
Every new website uses gulp. Below is the code to start using it on a new project.
Install the npm init package:
npm init
Complete the npm init process populating all fields.
After, install gulp:
npm install gulp@3.9.0
And gulp dependencies:
npm install gulp-sass --save-dev; npm install gulp-concat --save-dev; npm install gulp-uglify --save-dev; npm install browser-sync --save-dev; npm install gulp-rename --save-dev;
If this is your first time using gulp in a new machine, we need to install the gulp-cli:
npm install --g gulp-cli
For more references, check the official documentation: