An in-range update of eslint is breaking the build 🚨

[greenkeeper]

Version 4.0.0 of eslint just got published.

Branch	Build failing 🚨
Dependency	eslint
Current Version	3.19.0
Type	devDependency

This version is covered by your current version range and after updating it in your project the build failed.

As eslint is “only” a devDependency of this project it might not break production or downstream projects, but “only” your build or test tools – preventing new deploys or publishes.

I recommend you give this issue a high priority. I’m sure you can resolve this 💪

Status Details

• ✅ continuous-integration/appveyor/branch AppVeyor build succeeded Details
• ❌ continuous-integration/travis-ci/push The Travis CI build failed Details

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Release Notes

v4.0.0

• 4aefb49 Chore: avoid using deprecated rules on ESLint codebase (#8708) (Teddy Katz)
• 389feba Chore: upgrade deps. (#8684) (薛定谔的猫)
• 3da7b5e Fix: Semi-Style only check for comments when tokens exist (fixes #8696) (#8697) (Reyad Attiyat)
• 3cfe9ee Fix: Add space between async and param on fix (fixes #8682) (#8693) (Reyad Attiyat)
• c702858 Chore: enable no-multiple-empty-lines on ESLint codebase (#8694) (Teddy Katz)
• 34c4020 Update: Add support for parens on left side for-loops (fixes: #8393) (#8679) (Victor Hom)
• 735cd09 Docs: Correct the comment in an example for no-mixed-requires (#8686) (Fangzhou Li)
• 026f048 Chore: remove dead code from prefer-const (#8683) (Teddy Katz)

Commits

The new version differs by 119 commits.

• c61194f 4.0.0
• 821a1e6 Build: changelog update for 4.0.0
• 4aefb49 Chore: avoid using deprecated rules on ESLint codebase (#8708)
• 389feba Chore: upgrade deps. (#8684)
• 3da7b5e Fix: Semi-Style only check for comments when tokens exist (fixes #8696) (#8697)
• 3cfe9ee Fix: Add space between async and param on fix (fixes #8682) (#8693)
• c702858 Chore: enable no-multiple-empty-lines on ESLint codebase (#8694)
• 34c4020 Update: Add support for parens on left side for-loops (fixes: #8393) (#8679)
• 735cd09 Docs: Correct the comment in an example for no-mixed-requires (#8686)
• 026f048 Chore: remove dead code from prefer-const (#8683)
• a8e1c1c 4.0.0-rc.0
• 1768dc0 Build: changelog update for 4.0.0-rc.0
• 0058b0f Update: add --fix to no-debugger (#8660)
• b4daa22 Docs: Note to --fix option for strict rule (#8680)
• 4df33e7 Chore: check for root:true in project sooner (fixes #8561) (#8638)

There are 119 commits in total.

See the full diff

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Your Greenkeeper Bot 🌴

[greenkeeper]

After pinning to 3.19.0 your tests are passing again. Downgrade this dependency 📌.