implicit-arrow-linebreak doesn't enforce closing paren location

Tell us about your environment

• ESLint Version: v6.5.1
• Node Version: v8.12.0
• npm Version: v6.9.0 (but I’m using yarn v1.15.2 for this project) What parser (default, Babel-ESLint, etc.) are you using? babel-eslint@10.0.3 Please show your full configuration:

Configuration

Using eslint-config-airbnb@18.0.1

extends: airbnb
parser: babel-eslint
env:
  browser: true
rules:
  comma-dangle: [warn, always-multiline, {functions: never}]
  import/prefer-default-export: 0
  jsx-quotes: [warn, prefer-single]
  max-len: [warn, { code: 80 }]
  radix: [warn, as-needed]
  react/destructuring-assignment: [warn, always, { ignoreClassFields: true }]
  react/jsx-filename-extension: 0

What did you do? Please include the actual source code causing the issue, as well as the command that you used to run ESLint.

const doSomeFoo = (foo) => (
  foo);

node_modules/.bin/eslint app/javascript/specifications/actions/form/index.js

What did you expect to happen? A warning telling me that my closing paren should be on a new line, like in the docs:

const doSomeFoo = (foo) => (
  foo
);

What actually happened? Please include the actual, raw output from ESLint. No output

Are you willing to submit a pull request to fix this bug? I have never worked on this project, so unless someone were to point me in the right direction, likely not.

[g-plane]

@willlma I’ve implemented this in a separated plugin. You can try: https://github.com/g-plane/eslint-plugin-mayaka/blob/master/docs/arrow-body-parens-linebreak.md .

[willlma]

Many thanks!