This application runs a subset of Substation's data transformation features (conditions, processors) in the browser using WebAssembly.

Building the Playground

From the project root, run these commands:

GOOS=js GOARCH=wasm go build -ldflags="-s -w" -o build/playground/playground.wasm cmd/playground/wasm/main.go && \
cp "$(go env GOROOT)/misc/wasm/wasm_exec.js" build/playground && \
cp substation_logo.png build/playground && \
gzip -9 -v -c build/playground/playground.wasm > build/playground/playground.wasm.gz && \
rm build/playground/playground.wasm

The directory build/playground now contains the compiled playground application and a webpage that serves it.

Starting the Playground

From the project root, run this command:

go run cmd/playground/server/main.go

The playground is accessible in any browser at http://localhost:8000.