fix(yupResolver): prevent reduce to throw error (#300)

Related to #299 * prevent reduce to throw error * prevent reduce to throw error
react-hook-form · Dec 3, 2021 · 8a938cc · 8a938cc
1 parent 96c19f0
commit 8a938cc
Showing 1 changed file with 22 additions and 19 deletions.
diff --git a/yup/src/yup.ts b/yup/src/yup.ts
@@ -11,28 +11,31 @@ const parseErrorSchema = (
   error: Yup.ValidationError,
   validateAllFieldCriteria: boolean,
 ) => {
-  return error.inner.reduce<Record<string, FieldError>>((previous, error) => {
-    if (!previous[error.path!]) {
-      previous[error.path!] = { message: error.message, type: error.type! };
-    }
+  return (error.inner || []).reduce<Record<string, FieldError>>(
+    (previous, error) => {
+      if (!previous[error.path!]) {
+        previous[error.path!] = { message: error.message, type: error.type! };
+      }
 
-    if (validateAllFieldCriteria) {
-      const types = previous[error.path!].types;
-      const messages = types && types[error.type!];
+      if (validateAllFieldCriteria) {
+        const types = previous[error.path!].types;
+        const messages = types && types[error.type!];
 
-      previous[error.path!] = appendErrors(
-        error.path!,
-        validateAllFieldCriteria,
-        previous,
-        error.type!,
-        messages
-          ? ([] as string[]).concat(messages as string[], error.message)
-          : error.message,
-      ) as FieldError;
-    }
+        previous[error.path!] = appendErrors(
+          error.path!,
+          validateAllFieldCriteria,
+          previous,
+          error.type!,
+          messages
+            ? ([] as string[]).concat(messages as string[], error.message)
+            : error.message,
+        ) as FieldError;
+      }
 
-    return previous;
-  }, {});
+      return previous;
+    },
+    {},
+  );
 };
 
 export const yupResolver: Resolver =