[RRFC] --registry=default or --default-registry support

Motivation

At times for most of the CLI commands that provide support for --registry we would override the proxy with providing the default npm registry URL, rather this would be simpler if we were to have --registry=default option that would set it or use the default npm reg.

Example

npm install --registry=https://registry.npmjs.org/ 

# isn't of ^ we can use 

npm install --registry=default

# or 

npm install --default-registry

npm config set registry https://registry.npmjs.org/

# isn't of ^ we can use 

npm config set registry default

How

Current Behaviour

There is not options other than specifying the URL

Desired Behaviour

Support for --registry=default

References

• n/a

Start by reviewing the requested behavior for npm CLI commands that accept --registry and the npm config registry setting. Compare the proposed default value and --default-registry form with current command and configuration behavior. Done means the chosen syntax consistently selects the default npm registry without requiring its URL.