unhelpful error message

> c8 --reporter json --reporter text ava "--colors"
Uncaught exception in test.js
SyntaxError: Unexpected token '.'

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Error log: https://github.com/node-fetch/fetch-blob/pull/103/checks?check_run_id=3037830205
Version: output of `node -v`: v15
Platform: ubuntu

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I'm not sure if it's c8 or something else but the error message is not that helpful, it dose not say where in the file there is a error... only that it exited with error code 1. annoying to debug...