[New] support eslint 8.x

[MichaelDeBoey]

ESLint v8.0.0 is released 🎉

devDependency compatibility with ESLint 8:

• eslint-config-airbnb-base (eslint v8 support airbnb/javascript#2478)
  • [eslint config] [base] [breaking] support eslint 8 airbnb/javascript#2495
  • v15.0.0
• eslint-plugin-eslint-plugin (Support ESLint 8.x eslint-community/eslint-plugin-eslint-plugin#175)
  • Breaking: Add meta.hasSuggestions property to meta-property-ordering rule eslint-community/eslint-plugin-eslint-plugin#119
  • Breaking: Drop support for Node 10, 13, 15 eslint-community/eslint-plugin-eslint-plugin#151
  • Build: test on eslint v8 (fixes #175) eslint-community/eslint-plugin-eslint-plugin#186
  • Breaking: Drop support for old minor versions of Node 12 and 14 eslint-community/eslint-plugin-eslint-plugin#212
  • v4.0.0-0
  • v4.0.0
• eslint-plugin-import (Support ESLint 8.x import-js/eslint-plugin-import#2211)
  • [New] Support for ESLint v8 import-js/eslint-plugin-import#2191
  • v2.25.0

---

Closes #3055

[codecov-commenter]

Codecov Report

Merging #3059 (12f33f6) into master (0f7e2e7) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 12f33f6 differs from pull request most recent head d0d5d90. Consider uploading reports for the commit d0d5d90 to get more accurate results

@@           Coverage Diff           @@
##           master    #3059   +/-   ##
=======================================
  Coverage   97.52%   97.52%           
=======================================
  Files         118      118           
  Lines        7914     7914           
  Branches     2833     2833           
=======================================
  Hits         7718     7718           
  Misses        196      196           

Impacted Files	Coverage Δ
lib/rules/no-typos.js	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 0f7e2e7...d0d5d90. Read the comment docs.

[ljharb]

Seems like babel-eslint tests can't be run on eslint 8+.

I'll land some test refactors in master that makes conditional parsers easier to do.

[ljharb]

I've rebased this; the ~600 test failures are on node 12 (because it's using typescript-eslint/parser v4 latest instead of v4.0), and node 14+ (because it's using v5).

I think we need to update the TS eslint parser in a separate PR, and get those test failures resolved, and then we can rebase this again.

[ljharb]

Locally I've got 3 test failures left - 2 are likely a bug in babel's eslint parser, the third is eslint/eslint#15234.

[aladdin-add]

seems all the tests passed. 🎉

[ljharb]

@aladdin-add yes, but we're still waiting for eslint-config-airbnb-base to be published, which is blocked on sarbbottam/eslint-find-rules#337.