[NPM] Set default values for package.json using npm set
Npm by default uses global values when initializing a new package.json file. Learn how to set your own global default values by command line or editing the ~/.npmrc file.
npm set init.author.email "xxx@gmail.com" npm set init.author.name "XXX" npm set init.license "MIT"
Run:
npm init -y
Should bring all the init default value for you.