jshint error in ember component

I am using ember-cli-auto-complete in an ember component I defined. In my AutoComplete.extend() I used in KeyCodes and HIDDEN conts, which are defined in the ember-cli-auto-complete/components/auto-complete. The code works but jshint gives me error:

'HIDDEN' is not defined.

'KeyCodes' is not defined.

How do I fix this issue?