Timothy Flynn bbe6b84bd6 LibWeb: Mark most stream callbacks as infallible ...

There are a number of script-provided stream callbacks for various
stream operations, such as `start`, `pull`, `cancel`, etc. Out of all of
these, only the `start` callback can actually throw. And when it does,
the exception is realized immediately in the corresponding stream
constructor.

All other callbacks have spec text of the form:

    Throwing an exception is treated the same as returning a rejected
    promise.

And indeed this is internally handled by the streams spec. Thus all of
those callbacks can be specified as returning only a promise, rather
than a WebIDL::ExceptionOr<Promise>.

2024-04-30 08:14:12 +02:00

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