'angular 11 custom elements in new angular app

I am able to build the angular element and using a raw HTML page use the created src perfectly fine:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <script src="./custom-button-element.js"></script>
  <title>Document</title>
</head>
<body>
  <app-button name="WORKS!!!"></app-button>
</body>
</html>

However when I try this example in a angular application I get the following err:

Request URL: http://localhost:4200/custom-button-element.js
Request Method: GET
Status Code: 404 Not Found

I have in the ''app.module.ts'' created a schema:

 schemas: [
    CUSTOM_ELEMENTS_SCHEMA
  ]

and my ''app.component.html'' looks like the following:

<h1>Container...</h1>

<app-button name="Test"></app-button>

my angular app ''index.html'' looks like this:

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Container</title>
  <base href="/">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="icon" type="image/x-icon" href="favicon.ico">
  <script src="./custom-button-element.js"></script>
</head>
<body>
  <app-root></app-root>
</body>
</html>


Sources

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Source: Stack Overflow

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