React must be in scope in tsx file

[JasonZough]

I think this is a basical rule for tsx file.

[luhis]

I think this sounds like a good idea. If it does not import React, it should just be a regular .ts file. I will have a go a see what I can do.

[luhis]

i've had a go at this here:
https://github.com/luhis/tslint-react/commits/master

I think this might not quite feel right, as the rule linter doesn't know what is a React style file and what isn't. We could add a setting for it, so a setting to say that .tsx and .jsx must import react, but that sounds a bit messy. Does anyone have a better idea?

[adidahiya]

Can you flesh out this rule proposal a bit more? What kind of code passes for this rule? What kind of code fails? Is this just about the file extension?

[adidahiya]

Closing due to deprecation timeline, see #210