Jest does not work with macros -- `build` babel config is not used for `test`

Current Behavior

For example: Using styled-components/macros breaks the test. Using styled-components does not.

Suggested solution(s)

https://kulshekhar.github.io/ts-jest/user/config/babelConfig

Additional context

I can make a PR for this, but not sure how to tell it to find the babel config that tsdx uses

[zenflow]

@iDavidB I got it to work but it was quite a while ago… I’m just looking at the setup in my project… Maybe you need to add the @babel/preset-env to your .babelrc… (Or since it was a while ago and I haven’t updated packages, possibly something has changed and the fix doesn’t work now for whatever reason.)

So try adding the @babel/preset-env to your .babelrc. I think without this, your babel config for testing doesn’t use @babel/preset-env at all, and therefore might lack some necessary plugins (e.g. syntax plugins), which could be the source of your errors.

.babelrc

{
  "presets": [
    [
      "@babel/preset-env",
      {
        "targets": {
          "node": "10"
        }
      }
    ]
  ],
  "plugins": [
    ["macros"]
  ]
}

jest.config.js

module.exports = {
  globals: {
    'ts-jest': {
      babelConfig: '.babelrc',
    },
  },
}

Let me know if that does the trick! Otherwise, let us know what particular errors you are getting… It’s pretty hard to guess your problem without knowing the errors…

[arvigeus]

@ambroseus I was thinking the same, but I will need to untangle the config from that function. Haven’t done something like that before, should be fun