By now it’s pretty clear that JavaScript needs WebAssembly (Wasm) to perform heavy computational tasks. In the past few weeks we’ve covered the basics, did a side-by-side image processing comparison, and saw the benefits of using Wasm with web workers.
In this next tutorial, let’s apply the same principle to real-world data using large CSV files. Instead of images or web worker computations, we’ll fetch and count millions of rows directly in the browser to compare JavaScript versus Wasm performance side by side. This will show how…

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