Add checkSchema function

lib/entry-points.js

@@ -144518,19 +144518,41 @@ function optionalOrNull(validator) {
   };
 }
 function validateSchema(schema, obj) {
+  const result = checkSchema(schema, obj, { failFast: true });
+  return result.valid;
+}
+function checkSchema(schema, obj, options = {}, path29 = "") {
+  const result = { valid: true, unknownKeys: [] };
+  const inputKeys = new Set(Object.keys(obj));
   for (const [key, validator] of Object.entries(schema)) {
     const hasKey = key in obj;
     if (validator.required && !hasKey) {
-      return false;
+      result.valid = false;
+      if (options.failFast) {
+        return result;
+      }
+      continue;
     }
     if (validator.required && (obj[key] === void 0 || obj[key] === null)) {
-      return false;
+      result.valid = false;
+      if (options.failFast) {
+        return result;
+      }
+      continue;
     }
     if (hasKey && !validator.validate(obj[key])) {
-      return false;
+      result.valid = false;
+      if (options.failFast) {
+        return result;
+      }
+      continue;
     }
+    inputKeys.delete(key);
   }
-  return true;
+  for (const remainingKey of inputKeys) {
+    result.unknownKeys.push(`${path29}${remainingKey}`);
+  }
+  return result;
 }
 
 // src/util.ts