Javascript object oriented notations:

Step 1: Create following function in your js file:
(function (exports) {
    "use strict";
    var apiConfig = {
        // Properties
        IsProduction: isProduction(),
        // Functions
        Test: function(){
           return "";
       }
    };

    // Constants for Cookies Names
    var cookiesConstants = {
        CompanyUID: "companyUUID",
        DivisionUID: "divisionUUID"
      };

    //Private functions
    function isProduction() {
        if (window.location.host == "prod.com") {
            return true;
        }

        return false;
    }

    exports.apiConfig = apiConfig;
    exports.cookiesConstants = cookiesConstants;
})(this);

Step 2: Usage:
<script>
           var companyConstant = cookiesConstants.CompanyUID; //Get property value
           apiConfig.Test(); // Execute function
</script>