Use Angular 9 DomSanitizer to run inline scripts with innerHtml

Question

Have a file containing html, css and script.

<style>
  h1{
    color: darkgreen;
  }
</style>

<H1 id="header">Title</H1>

<script>
  alert("script executed");
</script>

I am using angular Domsanatizer, the html and css works, but the script is not executed.

In Component .ts file

this.safeContentFromFile = this.sanatizer.bypassSecurityTrustHtml(this.contentFromFile);

Component template

<div *ngIf="contentReady" [innerHtml]="safeContentFromFile" id="content-window"></div>

Any suggestion on how to get the script to work with this.

Thank you.