Type definition tests

[jamestalmage]

It would be good to have a set of typescript fixtures that exercised the API.
The test would just be running the typescript compiler and ensuring it didn't complain about the syntax.

That seems to be how they do it for DefinitelyTyped.

@SamVerschueren @ivogabe - That sound like a good idea?

[SamVerschueren]

Yes, I was thinking the same yesterday "we should have tests for the type definitions". That would definitely be an improvement to somewhat validate them as the definitions getting more complex and more features are added.

[jamestalmage]

When we add new API features we can use .failing to mark them until a TypeScript contributor updates the definition...

Except we don't test with AVA 😭 .

[sindresorhus]

@jamestalmage We can use skipped tests.

[unional]

Chiming in. Just shape test is not enough:
https://github.com/typings/generator-typings#about-writing-tests-for-typings

[jamestalmage]

Just shape test is not enough:

It would almost certainly be better than the nothing we have now though!

[unional]

It would almost certainly be better than the nothing we have now though!

😄 of course.

[unional]

Oh, by the way, if you lobby on this... 😄
microsoft/TypeScript#7661

[ivogabe]

This seems to be related too: microsoft/TypeScript#9281

[sindresorhus]

We also need this for a forthcoming Flow type definition: #1007

[novemberborn]

We have… something, now. Closing since it's not clear to me whether there are any deficiencies in our current approach.