jslint wont work

[J. Peter M. Schuler]

[J. Peter M. Schuler]

assert(
       'function' === $.type(Helper.bootstrap),
       'The view model helper does not implement the method "bootstrap"',
       1491643380,
     );

comma before ) ?!?

eslint: 81:7 error Parsing error: Unexpected token )

If comma removed:
eslint 80:19 error Insert ','