Create extend.json

[unional]

Filling in these fields will make it easier for us to review:

Typings URL: [E.g. http://github.com/typed-typings/npm-extend]
Source URL: [E.g. https://github.com/justmoon/node-extend]

Thanks for contributing!

[Fank]

source url is 404

[unional]

Ar, corrected.

[blakeembrey]

Did you consider using intersection types instead?

[unional]

Did you consider using intersection types instead?

What do have in mind? Intersecting the two function signatures?

Have yet to see the benefit in this scenario.

[blakeembrey]

Whichever you want, I suppose. This would be 100x more useful if TypeScript gets "outer sections" or whatever the latest proposal is.

[blakeembrey]

LGTM 👍

[unional]

This would be 100x more useful if TypeScript gets "outer sections" or whatever the latest proposal is.

Which proposal are you referring to? Would like to learn about it.

[blakeembrey]

I can't recall a complete proposal, just saw hints around and a real need for it to achieve better type safety. E.g. microsoft/TypeScript#6895.