# Getting binary dependencies `npm install` automatically downloads the correct version of the wasm bundle and `diff-server`. # Building against a dev version of repc ``` rm -rf bin/repc ln -s /path/to/repc/pkg/Release bin/repc npm run build ``` Note that if you run `npm install` subsequently, you'll nuke that link and have to create it again. The build script copies to a new directory, so you need to re-run `npm run build` each time you modify `repc`. # Performance Monitoring We continuously track performance across a variety of benchmarks. Results here: https://raw.githack.com/rocicorp/replicache-sdk-js/perf-data/dev/bench/index.html