my-router | Router library

I have read the documentation but I can not figure out how to configure Traefik v2 to replace Nginx as a reverse proxy for web sites (virtual hosts) without involving Docker. Ideally there would be let'sencrypt https as well.

I have a service running at http://127.0.0.1:4000 which I would like to reverse proxy to from http://myhost.com:80

This is the configuration i've come up with so far:

I have a component A which only contain a div with an id and a buttons that renders a component inside the div using innterHTML document.getElementById('my-router-outlet').innerHTML = '';. But this is not rendering I wonder why?.

I'm trying to avoid using ngIf to be a selector for which component should be rendered for performance reason. Also if I clear the innerHTML does the resources of that component will be cleared?

I am writing a Terraform script to spin up resources in Google Cloud Platform.
Some resources require one argument only if the other one set, how to populate one argument only if the other one is populated (or any other similar condition)?

For example:

I have two tabs (PrimeNg Tabview) in my Angular4 page with many input fields like textboxes, textareas, dropdowns etc. I also have a side menu-bar to navigate to other pages within the application. I want if there is any changes in the data in the in those input fields then there will be a pop-up message (a modal or a confirmation box) if user tries to change the tab, or to navigate to other pages using the side menu-bar.

I have tried the ngOnDestroy() method. Though this method gets triggered only when the page is getting closed (by navigating to other page or move to next tab-page) but it is not allowing you show a modal/confirmation box from within the method because it is on destroy life cycle hook.

Please help me to identify the actual event using which I can prompt user with a confirmation box if changes are there in any of the input fields in the page/form.

@surjit Suggestion:

my-guard.service.ts:

I'm trying to open a new terminal window run a program and output that to a file. This is the code I'm using when i run it it opens a new terminal and runs it correctly but never pipes the output to the file.

Appears that "this" is undefined inside of a express.Response.send() method. Is there a way to still send a member of my Router?

my-router.ts:

I tried to deploy the following stream: http --port=1234 | router --script=D:\my-router.groovy on local-cdf-server but router application won't start: