fix Babel transform to handle TS type annotations

[petebacondarwin]

The @babel/plugin-transform-modules-commonjs transform runs before the esbuild step, which is where TS type annotations are removed.

This can cause files that contain typings to fail with errors like:

SyntaxError: xxx.ts: Cannot transform the imported binding "XXX" since it's also used in a type annotation. Please strip type annotations using @babel/preset-typescript or @babel/preset-flow.

This commit ensures that files that are transformed via this Babel plugin have their type annotations removed via the @babel/preset-typescript preset beforehand.

Fixes #57

[thebanjomatic]

Rather than use @babel/preset-typescript to strip the type annotations, it seems like maybe it would be better to do the esbuild transform first and then pass the results of that into babel-jest to do the jest.mock hoisting? With a little extra work you would also probably be able to hook up the inputSourceMap as well.

[vertic4l]

Can somebody release it in the way @thebanjomatic mentions it, please ?

[dforsl]

Any progress here? If this solution works - despite there being more ideal one - I think anything right now that lets us use type annotations in tests would be a huge improvement :pray:

[peteratdivvy]

Any word on this? This is preventing us from using esbuild-jest.

[Crafoord]

Is repo abandoned by @aelbore ?

[anttiviljami]

This change fixed our problem. 🙏 I've published @petebacondarwin's branch under @epilot/esbuild-jest in case anyone needs it.