Fix peer dependencies for TS 3

[nickserv]

TypeScript 3 has been released, and has a small enough number of breaking changes that it shouldn't be too hard for us to officially support. I upgraded to 3.0.1 and it does seem to work well in CRA-TS, but we should probably verify that our dependencies have official TS 3 support.

npm WARN fork-ts-checker-webpack-plugin@0.2.10 requires a peer of typescript@^2.1.0 but none is installed. You must install peer dependencies yourself.
npm WARN react-scripts-ts@2.16.0 requires a peer of typescript@2.x but none is installed. You must install peer dependencies yourself.
npm WARN ts-jest@22.0.1 requires a peer of typescript@2.x but none is installed. You must install peer dependencies yourself.

Related

• TypeScript 3 support kulshekhar/ts-jest#643
• TypeScript 3 peerDependencies warning TypeStrong/fork-ts-checker-webpack-plugin#133

[DorianGrey]

Thanks for keeping track of these.
Seems that updating the plugin might take a while, given that the main author is not that active at the moment.

[nickserv]

Both packages updated with TS 3 support, I'll publish a PR as soon as I have time to test the new version contraints.

[nickserv]

It seems like TS 3 is now in master, but there are still peer dependency warnings, see #387.

[Tracis]

How to fix these warnings? Can I just ignore them?

[nickserv]

#387 fixes them. For now you should ignore them until it's merged.

[Tracis]

I manually upgraded react-scripts-ts, ts-jest, babel-jest, jest, fork-ts-checker-webpack-plugin, ajv and solved these problems.

[franklixuefei]

how's this been going?