Transformation error: Where to add a parser/compiler for TypeScript

[sarahs07]

I am looking to migrate our tests from Jasmine to Jest. However, it's failing on the first step with the error below:

Transformation error SyntaxError: Unexpected token (22:8)

It's recommended to use ts-jest but is jest-codemods configurable to allow for this or add TypeScript transformation?

[skovhus]

Hi. Thanks for reaching out.

jscodeshift that we use doesn't currently support TypeScript... But some people are working on it facebook/jscodeshift#180

We should probably add this to the README.

[sarahs07]

Yes definitely, it should be highlighted in the README and also https://facebook.github.io/jest/docs/en/migration-guide.html where it mentions Jasmine but not TypeScript which go hand in hand....

It would have saved me a day's worth of effort trying to make it work with TypeScript.

[skovhus]

It would have saved me a day's worth of effort trying to make it work with TypeScript.

Sorry to hear that.

Both this and Jest is open source and welcome contributions. Let me know if you would like to contribute here by updating the README. : )

[sarahs07]

Yes sure, thanks for letting me know, would like to contribute and update the ReadME file :)
Currently looking into https://www.npmjs.com/package/babel-preset-typescript to be added to babel as a preset.
I have added one in the root of jest-codemods but not sure if core babel would pick it or not

[skovhus]

Replaced by #122