vizcrush Launches After Developer Scraps Unverified WASM Performance Claims

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Developer tool vizcrush, a set of data visualization primitives built in Rust and compiled to WebAssembly, went open source this week with all 11 packages published on npm. Before launch, the author discovered that a claimed 5–10x WASM performance boost over the JavaScript core had no supporting benchmark data and was contradicted by the repo's own control runs. Only the 32x speed advantage of the JS core over a rival npm downsampling package was backed by actual measurements. Benchmarking also revealed that enabling the SIMD128 compiler flag produced no meaningful runtime improvement for the tested algorithms, prompting a public retraction documented as an architectural decision record in the repository. The project now follows a policy of tying all performance claims directly to verified measurements before publication.

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