fix(linting): no-unused-vars

Author: lukekarrys

lib/debug.js

@@ -1,4 +1,5 @@
 /* istanbul ignore next */
 module.exports = process.env.DEBUG_NOPT || process.env.NOPT_DEBUG
+  // eslint-disable-next-line no-console
   ? (...a) => console.error(...a)
   : () => {}