tryCatch.js

  /**
     * Method to handle try/catch  
     * @param {Function} tryMethod - Method to try
     * @param {Function} catchMethod - Method to call in case of error
     * @param {Array} methodParams - Array of arguments to call with function.apply
     * @private
     * @returns Result of tryMethod or exception
     */
    _tryCatch: function (tryMethod, catchMethod) {
        var context = this;
        return function (methodParams) {
            try {
                return tryMethod.apply(context, methodParams);
            } catch (ex) {
                ex.caller = tryMethod.name || '';
                methodParams.unshift(ex);
                catchMethod.apply(context, methodParams);
                return ex;
            }
        }
    },