Function name for `export default function() {}`

[fisker]

This function should have name 'default', I was going to send PR, but somehow I can't make test pass, I tried to reinstall deps serval times, but no luck.

[fisker]

@mysticatea Can you fix it?

[MichaelDeBoey]

For people watching this issue: we've already started with our own fork in order to not hold the wider community back anymore: https://github.com/eslint-community/regexpp

@mysticatea We would still love to move the original repo to the new @eslint-community though.

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This PR is released in @eslint-community/eslint-utils v4.1.1
https://github.com/eslint-community/eslint-utils/releases/tag/v4.1.1