Set properties: never in the camelCase rule

[j-f1]

Fixes xojs/xo#225.

[pvdlg]

#43 has already been refused.

The issue xojs/xo#225 is about ESLint no being able to handle interaction between the quote-props and the camelcase rules.

The desired behavior is the force using quote on non camel case prop, force using camel case prop, but allow to use non camel case prop when they are quoted.

This would work like this:

• {snake_case: 'value'} => error, should use camel case
• {'camelCase': 'value'} => error, should use not quote properties
• {'snake_case': 'value'} => valid

[j-f1]

The fact that { 'foo_bar': baz } is allowed by camelcase is a bug.

[sindresorhus]

Closing as this is not the correct fix.