The V3 approach obliterates this race condition by hooking addSourceBuffer at the MediaSource.prototype level, I intercept the creation of every SourceBuffer. The moment a buffer is created and returned, I immediately install a hooked appendBuffer directly on that specific instance; before any page code can even see the instance, let alone cache a reference to its methods. The hooked appendBuffer is installed as an own property of the instance, which takes precedence over the prototype chain. There is no window for fermaw to cache the original. The hook is always first.
Not the day you're after? Here's the solution to yesterday's Strands.
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By letting AI handle the technical 'grunt work' — the conversions, the scaling, the stabilizer science — I have more time left for the fun stuff. The flavor combos, the presentation, and the overall taste are all me. AI is just the high-tech coworker that helps me get there faster.