Andreas Kling c34da16089 LibWeb: Make <script src> loads partially async (by following the spec) ...

Instead of firing up a network request and synchronously blocking for it
to finish via a nested event loop, we now start an asynchronous request
when encountering <script src>.

Once the script load finishes (or fails), it gets executed at one of the
synchronization points in the HTML parser.

This solves some long-standing issues with random unexpected events
getting dispatched in the middle of parsing.

2021-09-20 17:22:25 +02:00

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