[RRFC] add bash/zsh completion to npx

[fleytman]

Motivation ("The Why")

It is convenient when you can press tab in the console and get a list of commands. This is how almost all console programs work.

Example

This could simplify the use of npx.

How

Current Behaviour

It not working.

Desired Behaviour

npx rea -> npx react-native npx react-native r -> npx react-native run- npx react-native run-android --co -> npx react-native run-android --configuration

References

(https://github.com/npm/cli/issues/4577)

[ljharb]

Wouldn't this mean that tab-completion has to contact the registry? npx doesn't just run with local and global bins, but with "anything on npmjs.org"

[bnb]

Wouldn't this mean that tab-completion has to contact the registry? npx doesn't just run with local and global bins, but with "anything on npmjs.org"

that or include an index of 1,910,640 (more the moment after I write this) package names with npx :P

[lukekarrys]

I think this could be fairly robust if it used the npx specific cache, and/or known bins when done in a project directory.