JS for Lightning Component in Visualforce Page

lc_in_visualforce_page.js

(function constructor() {
    let recordId = '{!Assignment__c.Id}';
    let userContext = '{!$User.UITheme}';

    $Lightning.use('c:HotelCheckInApp', function _createHotelCheckInComponent() {
        $.Lightning.createComponent('c:HotelCheckIn', { recordId: recordId }, 'lightningComponent', function _handleCreatedComponent(component) {
            console.info('HotelCheckIn Lightning Component created');
        });
    });
}());

$Lightning.use("c:SimilarPropertiesApp", function () {
    $Lightning.createComponent("c:SimilarProperties",
        { recordId: recordId },
        "lightningComponent",
        function (cmp) {
            $A.eventService.addHandler({
                event: 'force:navigateToSObject',
                handler: function (event) {
                    if (myUserContext == 'Theme4t' || myUserContext == 'Theme4d') {
                        // The Visualforce page is in S1 or Lightning Experience
                        sforce.one.navigateToSObject(event.getParams().recordId);
                    } else if (myUserContext == 'Theme3') {
                        // The Visualforce page is  running in Classic
                        window.parent.location = '/' + event.getParams().recordId;
                    } else {
                        console.log("Unsupported theme");
                    }
                }
            });
        }
    );
});