/**
 * Whether the element is a form item element
 */
export declare function isValidFormChildElement(element: unknown): element is HTMLInputElement | HTMLSelectElement | HTMLTextAreaElement;
/**
 * Sync the form DOM state with the form value
 */
export declare function syncFormStateToDom<FormState extends object>(formEl: HTMLFormElement, form: FormState, defaultForm: FormState): void;
/**
 * Get the form value from the form element
 */
export declare function getFormStateFromDom<FormState extends object>(formEl: HTMLFormElement, form: FormState): FormState;