Change tagged template literal argument type to accept unknown instead of just string

[vanbujm]

Fixes #314. Changed Type to unknown as per @sindresorhus's request.

[vanbujm]

One thing to be aware of is unknown will break types for Typescript 2.x versions. Happy to submit a more complicated type def that uses any for older versions and unknown for newer versions if we want to support older TS versions.

[sindresorhus]

One thing to be aware of is unknown will break types for Typescript 2.x versions.

That's fine. This change will be part of the next major release anyway.

[sindresorhus]

Can you also update the Flow definition?

[vanbujm]

@sindresorhus, I had a crack at changing the types for flow.

However there are two flow tests that check for null, that fail now since a mixed[] can be null.
I deleted them since it is no longer a typing error. But I'm unsure if that is the right call to make.

[sindresorhus]

Can you fix the merge conflict?

[sindresorhus]

However there are two flow tests that check for null, that fail now since a mixed[] can be null.
I deleted them since it is no longer a typing error. But I'm unsure if that is the right call to make.

All good 👍

[sindresorhus]

Looks like you resolved the merge conflict incorrectly. Look at the diff.

[vanbujm]

@sindresorhus Okay, I think it is sane now. I rebased when I did the first merge and thats what made everything crazy. Ended up just going back to pre-merge, merging (correctly) this time, then force pushing my fork. There was probably more elegant git wizardry that could have been done but ¯\(ツ)/¯