Infrastructure build to support third-party app integrations

backend/services/normalize.service.ts

@@ -0,0 +1,23 @@
+import { getProvider } from '../config/providers.js';
+import { NormalizationError } from '../config/normalizers.js';
+import type { NormalizedDelivery, ProviderSlug } from '../types/integration.js';
+
+export { NormalizationError };
+
+export const normalize = (
+  provider: ProviderSlug,
+  payload: unknown
+): NormalizedDelivery => {
+  const normalizer = getProvider(provider).normalize;
+
+  if (!normalizer) {
+    throw new NormalizationError(
+      `No normalizer registered for provider "${provider}"`
+    );
+  }
+
+  return normalizer(payload);
+};
+
+export const hasNormalizer = (provider: ProviderSlug): boolean =>
+  getProvider(provider).normalize !== undefined;