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While web assembly may give us performance, it doesn't give us access to new platform API. Web assembly can in no way replace Service Worker, IndexedDB or Web Manifests.

It also won't help with Web Components unless you're aming for a Web where we just draw on a big canvas.

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I want a web where we just draw on a big canvas. That's a pretty simple API for implementers to get right. Then we could move the scene graph (DOM) and it's rendering engine entirely into the application language where it could be more readily hot-fixed. It'd be like PDFJS but for your whole fucking web browser.

Have you looked into the Famo.us project? It's not my cup of tea in terms of implementation, but it sounds like exactly what you're looking for. Alternatively, what's keeping you from just using <canvas>?

Note that PDFJS still creates a DOM, in order to support little things like selection, accessibility, etc.

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