Typewiz in create-react-app jest

[zxti]

While the typewiz-jest work (#49) is baking, I was seeing if there was a quick path to getting typewiz instrumentation in jest for create-react-app specifically. I tried registering typewiz-node before jest.run(), but no luck. I was curious if you had some ideas here, in case you have already looked at how to make jest work.

I've created new branches in the following two repos, under the typewiz-jest branch:

• https://github.com/zxti/cra-typewiz-example: A fresh create-react-app-ts project but with a small untyped test added.
• https://github.com/zxti/react-scripts-ts: The react-scripts-ts that registers typewiz-node in the test.js react script.

To repro:

cd react-scripts-ts
git checkout typewiz-jest
yarn link
yarn install
cd ../cra-typewiz-example
git checkout typewiz-jest
yarn link react-scripts-ts
yarn install

CI=true yarn react-scripts-ts test --runInBand --env=jsdom hello-spec

The final line runs tests without watcher mode (CI=true), and runs tests serially with --runInBand (to prevent forking). I verified that the test is running in the same process as the one that called require('typewiz-node/dist/register'), but still no luck!

As another approach, I also simply tried registering typewiz-node from within src/setupTests.ts, but that causes jest to spit errors about receiving Typescript rather than Javascript....

[zxti]

I should clarify - the specific observed issue here is that no types are being annotated.

[urish]

As far as I can remember, I had the exact same issue when I tried to get #49 to work. I hope to find some time later this week to look at the production you created and see if I can help in any way