v13.0.0

Features

• Add eslint-plugin-flowtype-errors (fc15db3)
• Add eslint-plugin-jsx-a11y to react rules (7d8dbdc)
• Add useful eslint plugins to base rules (caf6088)
• Allow nested ternaries (15107ac)
• Allow possibly undefined variables in typeof checks (1e657c3)
• Configure new rules (273e139)
• Enforce multiline ternary for long expressions (92031d2)
• Make file extensions mandatory in imports (6ea3964)
• Refactor import rules (53f41d4)
• Refactor node rules (8a4e2b5)
• Refactor react rules (9994d2b)
• Refactor react/jsx-wrap-multilines rules (efe8ebd)
• Refactor tests rules (820124f)
• Remove curly and bracket spacings (4ff321c)
• Remove eslint-plugin-flowtype-error again (13bbca7)
• Remove fp rules (34543bc)
• Switch back to babel-eslint again (f3ba862)
• Switch back to eslint default parser (#18) (5ab10a8)
• Update peerigon/node to match node >= 6 (c8ff737)

BREAKING CHANGES

• If you're using Flowtype and the flowtype rules,
  you just need to call ESLint now to also do the typechecking.
• You need to add babel-eslint as project dependencies in project where the peerigon/flowtype rules are used. You don't need to change anything if you're using other rules.
• These plugins introduce new rules that might
  cause linting errors now.
• • Add autofixable order of imports

• Discourage anonymous default exports

• Changes a lot of rules that are concerned with
  whitespace after curlies and brackets. For consistency reasons,
  we do not write spaces after these characters.
• Always add new line before multiline wraps. This change
  was necessary because of the new react/jsx-closing-tag-location
  which requires the closing tag to be on the same indentation as the
  opening tag. In combination with the parentheses rule, it could lead
  to an unstable state where eslint was trying to fix it
  by switching back and forth between two states.
• This change adds a lot of new rules which
  help us to improve the accessibility of our applications.
• There are new rules that might cause errors now.
• The padded-blocks rule has been activated for tests again.
• The fp rules where part of an experiment.
  These overly strict rules don't make sense in JavaScript.
• Remove node 4 support
• • "import/extensions": ["error", "ignorePackages"],
• • "multiline-ternary": ["error", "always-multiline"]
• • import/no-self-import error

• import/no-useless-path-segments error

• A lof of rules have changed, expect some new errors.