Proposal: [react][breaking] Only .js files should contain JSX.

Author: KevinGrandon

packages/eslint-config-airbnb/rules/react.js

@@ -223,9 +223,9 @@ module.exports = {
  // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-target-blank.md
  'react/jsx-no-target-blank': 2,
 
- // only .jsx files may have JSX
+ // only .js files may have JSX
  // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-filename-extension.md
- 'react/jsx-filename-extension': [2, { extensions: ['.jsx'] }],
+ 'react/jsx-filename-extension': [2, { extensions: ['.js'] }],
 
  // prevent accidental JS comments from being injected into JSX as text
  // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-comment-textnodes.md