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Add wasm binary to release pipeline #16743

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Merged
Mossaka merged 1 commit into from
Feb 19, 2026
Merged

Add wasm binary to release pipeline #16743

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32 changes: 32 additions & 0 deletions scripts/build-release.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,38 @@ for p in "${platforms[@]}"; do

done

# Build WebAssembly binary
echo ""
echo "Building gh-aw WebAssembly binary..."
GOOS=js GOARCH=wasm go build \
-trimpath \
-ldflags="-s -w" \
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Copilot AI Feb 19, 2026

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The released Wasm binary is built without any version/release metadata. In the current codebase the compiler defaults to defaultVersion="dev" and DetectActionMode() will therefore choose dev mode (local action refs like ./actions/setup), which will produce compiled workflows that won’t run in consumer repos. Consider embedding release/version info into the Wasm build (e.g., add version/isRelease vars to cmd/gh-aw-wasm similar to cmd/gh-aw, set workflow.SetDefaultVersion/SetVersion/SetIsRelease in its main(), and pass -X ... via this build step) or otherwise default the Wasm compiler to a consumer-safe action mode.

Suggested change
-ldflags="-s -w" \
-ldflags="-s -w -X main.version=${VERSION} -X main.isRelease=true" \

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-o "dist/gh-aw.wasm" \
./cmd/gh-aw-wasm

# Run wasm-opt if available
if command -v wasm-opt &> /dev/null; then
echo "Running wasm-opt -Oz (size optimization)..."
BEFORE=$(wc -c < dist/gh-aw.wasm)
wasm-opt -Oz --enable-bulk-memory dist/gh-aw.wasm -o dist/gh-aw.opt.wasm && \
mv dist/gh-aw.opt.wasm dist/gh-aw.wasm
AFTER=$(wc -c < dist/gh-aw.wasm)
echo "wasm-opt: $BEFORE -> $AFTER bytes"
fi

# Bundle wasm_exec.js (required Go runtime for loading the wasm binary)
WASM_EXEC_SRC="$(go env GOROOT)/lib/wasm/wasm_exec.js"
if [ ! -f "$WASM_EXEC_SRC" ]; then
WASM_EXEC_SRC="$(go env GOROOT)/misc/wasm/wasm_exec.js"
fi
if [ ! -f "$WASM_EXEC_SRC" ]; then
echo "error: wasm_exec.js not found in Go installation" >&2
exit 1
fi
cp "$WASM_EXEC_SRC" dist/wasm_exec.js
echo "Bundled wasm_exec.js from $WASM_EXEC_SRC"

echo ""
echo "Build complete. Binaries:"
ls -lh dist/

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