Running the same failing module script breaks ECMA assumptions

[davidot]

Having a page like:

<script type="module" src="runtimefail.js"></script>
<script type="module" src="runtimefail.js"></script>

where runtimefail.js throws some non parse error.

Means the evaluate method of a Source Text Module Record is called twice.
This is a problem as described by tc39/ecma262#2823 .
It call Evaluate on the exact same module as modules are cached as described in https://html.spec.whatwg.org/multipage/webappapis.html#fetch-a-single-module-script .

To me it looks like this is a ECMAscript issue, but the An error to rethrow field of a script could perhaps provide an alternative way to solve this.