Support ESLint 7.x

[MichaelDeBoey]

ESLint v7.0.0 is released 🎉

It would be awesome to have official ESLint 7 support. 👊
I'm happy to help where I can of course 🙂

[Belco90]

Hey Michaël! Thanks for your suggestion and help. Indeed, it would be nice to update the plugin to get compatibility with ESLint v7. I was thinking about adding an ESLint matrix to CI in a similar way as eslint-plugin-react address it. I don't know if there is a better approach for that.

Anyway, I don't expect to cover so many node and ESLint versions as that plugin. I think just with node 10.12, 12 and 14 (we already have this) and ESLint v5, v6 and v7 (this is missing at the moment) would be enough.

Thoughts?

[MichaelDeBoey]

@Belco90 I've opened #139 to support ESLint 7.x

[Belco90]

Oh wow, amazing job with that one and all related PRs mate 🎉

[Belco90]

I still think we should merge this one. All the tests are passing for ESLint 5, 6 and 7. We are not affected by breaking changes from v7. It doesn't seem the dependencies not upgraded to v7 yet are breaking anything in our side.

[nickserv]

Can they be installed with yarn though? If I remember correctly, yarn errors on peer dependency warnings by default. Even if a dependency of this package works, if it doesn't say it works with ESLint 7 and that's the only pinned version, the entire installation would fail.

[Belco90]

First notice I have about it. I need to check that behavior when installing with yarn.

[BridgeAR]

Installing with yarn works properly as well.