IntroductionAt Motif Analytics, we are building a highly-interactive analytics tool, which allows finding insights in relatively large datasets, fully in-browser. We have a more traditional cloud-mode too, but the “local” (fully in-browser) mode is an important way for our users to experiment with Motif and see if it matches their needs, without making any commitments on their end. To make that possible, we employ several techniques, which include running DuckDB WASM, Apache Arrow, and Web Worke...