Use default values from yarn and npm

[langpavel]

Feature request

Now defaults are read from git config. Do this with yarn and npm too.

Read defauts for package.json from yarn.
Yarn is reading npm config too

yarn config get is everything needed

All in one command can be yarn config list --json filtering inspect messages.
See jsonlines.org:

{"type":"info","data":"yarn config"}
{"type":"inspect","data":{ /* YARN config here... */ }
{"type":"info","data":"npm config"}
{"type":"inspect","data":{ /* NPM config here... */ "init.license":"MIT"}}

• init-author-name, init.author.name, username
• init-author-email, init.author.email, email
• init-author-url
• init-license, init.license

Resources

• NPM — Setting config options for the init command
• Yarn — Setting defaults for yarn init