fix(next-utils): use z.extend() for robust type inference in validateMintelEnv

packages/next-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mintel/next-utils",
-  "version": "1.7.0",
+  "version": "1.7.3",
   "publishConfig": {
     "access": "public",
     "registry": "https://npm.infra.mintel.me"

packages/next-utils/src/env.ts

@@ -50,11 +50,10 @@ export const mintelEnvSchema = {
   INTERNAL_DIRECTUS_URL: z.string().url().optional(),
 };
 
-export function validateMintelEnv(schemaExtension = {}) {
-  const fullSchema = z.object({
-    ...mintelEnvSchema,
-    ...schemaExtension,
-  });
+export function validateMintelEnv<
+  T extends z.ZodRawShape = Record<string, never>,
+>(schemaExtension: T = {} as T) {
+  const fullSchema = z.object(mintelEnvSchema).extend(schemaExtension);
 
   const isBuildTime =
     process.env.NEXT_PHASE === "phase-production-build" ||
@@ -67,7 +66,7 @@ export function validateMintelEnv(schemaExtension = {}) {
       console.warn(
         "⚠️ Some environment variables are missing during build, but skipping strict validation.",
       );
-      // Return partial data to allow build to continue
+      // Return process.env casted to the full schema type to unblock builds
       return process.env as unknown as z.infer<typeof fullSchema>;
     }