Probably not compiling with babel: `Unexpected import token`

Description

Testings are failing in Unexpected import token (probably due to non babel compiling issue)

Test Source

initials.js

const initials = (string: string) =>
  string.split(' ').map(word => word[0]).join('').slice(0, 2);

export default initials;

initials.test.js

import test from 'ava';
import initials from './initials';

test(t => t.expect(initials('Renato Ribeiro')).toBe('RR'));

Error Message & Stack Trace

Here’s a print (Sorry, I have a problem with my term that I can’t copy text 😢)

Config

package.json

{
  "...": "...",
  "ava": {
    "babel": "inherit"
  }
}

.babelrc

{
  "presets": [
    "next/babel"
  ],
  "plugins": [
    "transform-export-extensions"
  ]
}

Note: also tested with "require": ["babel-register"] in ava configuration

Command-Line Arguments

ava

Relevant Links

Repo: https://github.com/renatorib/next-jsonplaceholder Initials test commit: https://github.com/renatorib/next-jsonplaceholder/commit/f5602a1f77163ca9a0fdac4f9bd76ccf10955fcd

Environment

$ ava --version
0.18.2

$ node --version
v7.5.0 

[penge]

Put those to package.json:

{
  "ava":  {
    "require": ["babel-register"]
  },

  "babel": {
    "presets": ["@ava/stage-4"]
  }
}

Source: transpiling-sources@AVA

@avajs, I would suggest making init more clever so those issues are gone. To be “No extra setup needed.” 😃

[novemberborn]

And when I remove this config:

“ava”: { “babel”: “inherit” } This error persists.

I actually get this error, which seems to be some Flow syntax that isn’t removed:

❯ npm t

> Placeholder@ test /private/var/folders/_6/p8qxp_3n62zg9081tvb0lcc80000gn/T/tmp.zWXKadVBb1/next-jsonplaceholder
> ava

/private/var/folders/_6/p8qxp_3n62zg9081tvb0lcc80000gn/T/tmp.zWXKadVBb1/next-jsonplaceholder/utils/initials.js:3
const initials = (string: string) =>
                        ^
SyntaxError: Unexpected token :

In any case, it means AVA transpiled the ESM syntax correctly.

My custom babel config (next/babel) support import/export and latest es versions.

But does it transpile to CJS?

Why closed issue, since this not resolved?

This issue tracker is for AVA itself. Happy to do the occasional support here, and happy to keep discussing, but this is a problem with your Babel setup, not AVA.