Component under test breaks if it requires source modules

[jcalonso]

I replicated the issue here: https://github.com/jcalonso/avoriaz-ava-example/commit/d4afd13d15d612e2d2d59a3811a7ea1ae4c88216

I'm getting:

npm test
> avoriaz-ava-example@1.0.0 test /home/jcalonso/Projects/github/avoriaz-ava-example
> nyc ./node_modules/.bin/ava test/*.spec.js

/home/jcalonso/Projects/github/avoriaz-ava-example/node_modules/vue2-simplert/src/main-dist.js:1
(function (exports, require, module, __filename, __dirname) { import Simplert from './Simplert.vue'
                                                              ^^^^^^

SyntaxError: Unexpected token import

Am I missing something?