[Question] How to use "await" / "async" in Tiny Unity ?

Using them without upgradnig from ES5 gives an error that I don't know how to handle!

Error msg:

An async function or method in ES5/ES3 requires the 'Promise' constructor.  Make sure you have a declaration for the 'Promise' constructor or include 'ES2015' in your `--lib` option.

I tried adding "tsconfig.override.json" to the root of my Tiny Project (i.e. besides the .utproject file) with
"target": "ES2017" OR "target": "ES6" but it didn't work, I also tried "lib": ["es2018", "dom"] and still nothing.

By nothing I mean I get a whole punch of errors saying Array,string,number,... not defined

example on what i write inside the tsconfig.override.json file

Code (JavaScript):

1. {
2. "compilerOptions": {
3. "target": "ES2017"
4. }
5. }

Lastly, I saw some examples on the forums using them when I search before posting the thread, but it didn't help as they were answering other questions using them and not emphasizing on them!
Thanks.