The form.setFields is causing the warning: "Warning: There may be circular references"

[jackblackevo]

form.setFields 會導致警告「Warning: There may be circular references」

How to reproduce 如何重現

1. Visit https://codesandbox.io/p/devbox/rc-field-form-circular-references-8z9hfk?file=%2Fsrc%2FApp.tsx
2. Open the "CodeSandbox Preview Console" or the "Browser DevTools Console". 打開 CodeSandbox 或是瀏覽器的開發人員工具
3. Click the "Set Form Fields" button on the webpage. 點擊網頁中的「Set Form Fields」按鈕
4. Check the warning log in the console. 於 Console（控制台）中查看警告 log（日誌訊息）

Possible causes 可能造成的原因

Both errors and warnings point to EMPTY_ERRORS, causing isEqual to perform a deepEqual comparison, determining that warnings and the errors already existing in refSet have the same reference.

errors 與 warnings 皆指向 EMPTY_ERRORS，造成 isEqual 進行 deepEqual 時，判斷 warnings 與已存在於 refSet 的 errors 有相同的 reference（参考）。

field-form/src/Field.tsx

Lines 148 to 149 in 294125e

	private errors: string[] = EMPTY_ERRORS;
	private warnings: string[] = EMPTY_ERRORS;

field-form/src/Field.tsx

Lines 517 to 518 in 294125e

	errors: this.errors,
	warnings: this.warnings,

field-form/src/Field.tsx

Lines 240 to 242 in 294125e

	if (!isEqual(this.metaCache, meta)) {
	onMetaChange(meta);
	}

Related Pull Request 相關的 PR

#604

[jackblackevo]

import Form, { Field } from "rc-field-form";

const Input = ({ value = "", ...props }) => <input {...props} value={value} />;

function App() {
  const [form] = Form.useForm<{ username: string }>();

  const setFormFields = () => {
    // Warning: Warning: There may be circular references
    // https://github.com/react-component/util/blob/871c2c146b1050e33091005b32b8debcdcd15ca7/src/isEqual.ts#L14
    form.setFields([{ name: "username", errors: [] }]);
  };

  return (
    <Form form={form}>
      <Field
        name="username"
        rules={[{ required: true }]}
        onMetaChange={() => {}}
      >
        <Input />
      </Field>

      <button onClick={setFormFields}>Set Form Fields</button>
    </Form>
  );
}

export default App;