Change the location of runtime.js, polyfills.js and so on in index.html

In my index.html file I have multiple javascript files that are included in the body tag

<body>
    <div ng-view class="view"></div>
    <script src="legacy/script1.js"></script>
    <script src="legacy/script2.js"></script>
    <script src="legacy/script3.js"></script>
</body>

When I build my application angular adds the runtime.js, polyfills.js and so on right before the closing of the body tag.

<body>
    <div ng-view class="view"></div>
    <script src="legacy/script1.js"></script>
    <script src="legacy/script2.js"></script>
    <script src="legacy/script3.js"></script>
    <script src="runtime.js" type="module"></script>
    <script src="polyfills.js" type="module"></script>
    <script src="styles.js" defer=""></script>
    <script src="scripts.js" defer=""></script>
    <script src="vendor.js" type="module"></script>
</body>

Is there any way I change where they are placed?

I need the output to be:

<body>
    <div ng-view class="view"></div>
    <script src="legacy/script1.js"></script>
    <script src="legacy/script2.js"></script>
    <script src="runtime.js" type="module"></script>
    <script src="polyfills.js" type="module"></script>
    <script src="styles.js" defer=""></script>
    <script src="scripts.js" defer=""></script>
    <script src="vendor.js" type="module"></script>
    <script src="legacy/script3.js"></script>
</body>

Solution

This can be achieved using @angular-builders/custom-webpack by using the following:

in your angular.json change builder to @angular-builders/custom-webpack:browser and then set "indexTransform": "./index-html-transform.ts"

In the index-html-transform.ts you can define custom placement logic so I used the following:

import { TargetOptions } from '@angular-builders/custom-webpack';

export default (_targetOptions: TargetOptions, indexHtml: string) => {
    const start = indexHtml.indexOf('<script src="runtime');
    const end = indexHtml.indexOf('</body>');
    const injectionPositionHtml = '<!-- angular13 -->';

    const scripts = indexHtml.slice(start, end);

    return indexHtml.replace(scripts, '').replace(injectionPositionHtml, scripts);
};

now I can place  between script2 and 3 and it works as intended!