[eslint config] [base] [patch] Allow use of __REDUX_DEVTOOLS_EXTENSION_COMPOSE__

This style guide disallows the use of underscores in properties. However, the
Redux browser extension requires the use of a variable named
`__REDUX_DEVTOOLS_EXTENSION_COMPOSE__`. Since Redux is so popular with React,
it makes sense to allow this.

Author: remcohaszing

packages/eslint-config-airbnb-base/rules/style.js

@@ -369,7 +369,7 @@ module.exports = {
     // disallow dangling underscores in identifiers
     // https://eslint.org/docs/rules/no-underscore-dangle
     'no-underscore-dangle': ['error', {
-      allow: [],
+      allow: ['__REDUX_DEVTOOLS_EXTENSION_COMPOSE__'],
       allowAfterThis: false,
       allowAfterSuper: false,
       enforceInMethodNames: true,