How to setup AVA to work with both javascript and typescript files?

[maxfarseer]

Hello, I have a codebase written in javascript and I would like to migrate it to typescript.

I was able to setup ava to run tests for .ts files copying setup from this example (ts receipe page, playground). Ts works!

If I will add .js files to scenario, I had an error:

import test from "ava";
  ^^^^^^

  SyntaxError: Cannot use import statement outside a module

Here is the my example repo with representation of the issue:

inside package.json

"files": [
      "**/*.ava.ts",
      "**/*.ava.js" // <!-- remove this line and ts tests are pass.
    ]

Any tips to make both js and ts work together?

Thank you,
Max.

[novemberborn]

You haven't told Node.js to treat .js files as ES modules, so you cannot use import. This isn't an AVA problem as such.