feat: Support ESLint 7.x

[MichaelDeBoey]

ESLint v7.0.0 is released 🎉

(dev)Dependencies should be compatible with ESLint 7 too before we can merge this one:

• jsx-ast-utils
  • PR
  • Release
• eslint-config-airbnb-base
  • PR
  • Release
• eslint-plugin-flowtype
  • PR
  • Release
• eslint-plugin-import
  • PR + commit
  • Release

---

Closes #683

[coveralls]

Coverage remained the same at 99.484% when pulling ef68b45 on MichaelDeBoey:eslint-7 into 573d39e on evcohen:master.

[coveralls]

Coverage remained the same at 99.484% when pulling 85b4d3a on MichaelDeBoey:eslint-7 into 573d39e on evcohen:master.

[weyert]

Anyway to get this PR progressing? Love to use this plugin with ESLint 7 :)

[kentcdodds]

Another ping. This is holding up the v4 release of react-scripts so I'm happy to pitch in as needed.

[MichaelDeBoey]

@kentcdodds This one's currently waiting for eslint-config-airbnb-base (airbnb/javascript#2240) and jsx-ast-utils (jsx-eslint/jsx-ast-utils#97), which itself is also waiting for eslint-config-airbnb-base.

[ljharb]

I'm not convinced it actually needs the jsx-ast-utils update, but eslint-config-airbnb-base certainly. That will be coming soon.

[jessebeach]

@MichaelDeBoey thank you so much for this contribution. We'll get this in as soon as it is ready.

[ljharb]

eslint-config-airbnb-base has been updated and I've rebased this PR. Tests are indeed failing, so it looks like we'll need the jsx-ast-utils update before proceeding.

[ljharb]

rebased again with the latest jsx-ast-utils published

[ljharb]

It's failing because jsx-ast-utils is still using .start in at least one place. No need to update this PR please; I'll update jsx-ast-utils, and then rebase this PR once that's done :-)

[ljharb]

Thanks for the PRs and for bearing with the delays :-)

[ljharb]

@jessebeach are you working on a release soon, or should i cut one?

[danez]

Can we please have a release?

[jessebeach]

Can we please have a release?

@kentcdodds & @danez yes, I'll have one out this week. Aiming for tomorrow, June 17th, 2020

cc/ @evcohen who I'll need for the NPM dance when the time comes.

[ljharb]

@jessebeach i can get you any npm privileges you need; lmk if there's an issue.