install amd64 version of @pact-foundation if missing

Author: Vlasis-Perdikidis

tests/pact-tests/run-pact-tests.sh

@@ -6,6 +6,15 @@ set -euo pipefail
 # Rebuild optional native bindings for the current platform without resolving new versions.
 npm rebuild --include=optional @pact-foundation/pact @pact-foundation/pact-core
 
+# CI runners can restore node_modules generated on a different architecture.
+# Ensure Pact's native prebuild for Linux x64 glibc is present before loading pact-core.
+if [[ "$(uname -s)" == "Linux" && "$(uname -m)" == "x86_64" ]]; then
+  if ! node -e "require.resolve('@pact-foundation/pact-core-linux-x64-glibc')" >/dev/null 2>&1; then
+    PACT_CORE_VERSION="$(node -p "(() => { try { return require('@pact-foundation/pact/node_modules/@pact-foundation/pact-core/package.json').version; } catch { return require('@pact-foundation/pact-core/package.json').version; } })()")"
+    npm install --no-save --include=optional "@pact-foundation/pact-core-linux-x64-glibc@${PACT_CORE_VERSION}"
+  fi
+fi
+
 # Remove old PACTs
 rm -rf ./.pacts