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> Attempted Fix: Skip the JSON Round-Trip > We integrated serde-wasm-bindgen

So you're reinventing JSON but binary? V8 JSON nowadays is highly optimized [1] and can process gigabytes per second [2], I doubt it is a bottleneck here.

[1] https://v8.dev/blog/json-stringify [2] https://github.com/simdjson/simdjson

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No, serde-wasm-bindgen implements the serde Serializer interface by calling into JS to directly construct the JS objects on the JS heap without an intermediate serialization/deserialization. You pay the cost of one or more FFI calls for every object though.

https://docs.rs/serde-wasm-bindgen/

Indeed, you're right. However, it still needs to encode and decode strings. WASM just needs native interop.

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