Fix(useForm): when running field-level validation with nested field(s), the last field will overrides the error results

.changeset/hungry-pants-play.md

@@ -0,0 +1,5 @@
+---
+"react-cool-form": patch
+---
+
+Fix(useForm): when running field validation with nested field(s), error results will be overrided by the last field

src/useForm.test.tsx

@@ -1076,6 +1076,27 @@ describe("useForm", () => {
  }
  );
 
+ it("should run field-level validation with nested fields", async () => {
+ const errors = { foo: { a: "Required", b: "Required" } };
+ renderHelper({
+ onError,
+ children: ({ field }: Methods) => (
+ <>
+ <input
+ name="foo.a"
+ ref={field((val: string) => (!val.length ? errors.foo.a : false))}
+ />
+ <input
+ name="foo.b"
+ ref={field((val: string) => (!val.length ? errors.foo.b : false))}
+ />
+ </>
+ ),
+ });
+ fireEvent.submit(getByTestId("form"));
+ await waitFor(() => expect(onError).toHaveBeenCalledWith(errors));
+ });
+
  it("should run field-level validation with dependent fields", async () => {
  const errors = { foo: "Bar is required" };
  renderHelper({

src/useForm.ts

@@ -487,7 +487,7 @@ export default <V extends FormValues = FormValues>({
 
  return Promise.all(promises).then((errors) =>
  Object.keys(fieldValidatorsRef.current).reduce((acc, cur, idx) => {
- acc = { ...acc, ...(errors[idx] ? set({}, cur, errors[idx]) : {}) };
+ acc = { ...acc, ...(errors[idx] ? set(acc, cur, errors[idx]) : {}) };
  return acc;
  }, {})
  );