Generate the browser contract from ProductApi

tests/web-contract.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+cd "$(dirname "${BASH_SOURCE[0]}")/.."
+
+temporary="$(mktemp -d)"
+trap 'rm -rf "$temporary"' EXIT
+
+cabal run nuthatch-generate-web-contract --offline -- \
+  "$temporary/contract.ts" \
+  "$temporary/contract.json"
+cmp web/src/generated/contract.ts "$temporary/contract.ts"
+cmp web/test/fixtures/contract.json "$temporary/contract.json"
+cabal run nuthatch-web-contract-integration --offline