Update dependency babel-eslint to v10

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
babel-eslint	dependencies	major	8.2.6 -> 10.0.1	source

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Release Notes

babel/babel-eslint

v10.0.1

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v10.0.1

• Reverting #​584

The TypeAlias "conversion" to a function has issues. Sounds like we need to rethink the change, most likely we can just actually change the scoping rather than hardcode an AST change.

v10.0.0

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v10.0.0

Small breaking change: add a peerDependency starting from the ESLint version that added a parser feature that we were monkeypatching before (and drop that code). If already using ESLint 5 shouldn't be any different.

• Bugfix for TypeAlias: #​584

/* @​flow */
type Node<T> = { head: T; tail: Node<T> }

// or 

type File = {chunks: Array<Chunk>}
type Chunk = {file: File}

• Update to test against ESLint 5, add a peerDependency: #​689
• Drop monkeypatching behavior: #​690

v9.0.0

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v9.0.0

We've released v7: https://twitter.com/left_pad/status/1034204330352500736, so this just updates babel-eslint to use those versions internally. That in itself doesn't break anything but:

• Babel now supports the new decorators proposal by default, so we need to switch between the new and the old proposal. This is a breaking change.

To enable the legacy decorators proposal users should add a specific parser option:

{
  parserOptions: {
    ecmaFeatures: {
      legacyDecorators: true
    }
  }
}

• Babel removed the support for Node 4 , so I propagated that here.

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