fix(next-utils): use natural type inference for validateMintelEnv to fix unknown type errors

packages/next-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mintel/next-utils",
-  "version": "1.7.4",
+  "version": "1.7.5",
   "publishConfig": {
     "access": "public",
     "registry": "https://npm.infra.mintel.me"

packages/next-utils/src/env.ts

@@ -52,9 +52,7 @@ export const mintelEnvSchema = {
 
 export function validateMintelEnv<
   T extends z.ZodRawShape = Record<string, never>,
->(
+>(schemaExtension: T = {} as T) {
-  schemaExtension: T = {} as T,
-): z.infer<z.ZodObject<typeof mintelEnvSchema & T>> {
   const fullSchema = z.object(mintelEnvSchema).extend(schemaExtension);
 
   const isBuildTime =
@@ -68,7 +66,7 @@ export function validateMintelEnv<
       console.warn(
         "⚠️ Some environment variables are missing during build, but skipping strict validation.",
       );
-      // Return process.env casted to ensure types match for the full schema
+      // Return process.env casted to the full schema type to unblock builds
       return process.env as unknown as z.infer<typeof fullSchema>;
     }
 
@@ -79,5 +77,5 @@ export function validateMintelEnv<
     throw new Error("Invalid environment variables");
   }
 
-  return result.data as z.infer<typeof fullSchema>;
+  return result.data;
 }