import { type FC, type ReactNode } from "react";
export type EmptyValue = "null" | "undefined";
export type GetEmptyValue<T extends EmptyValue> = T extends "undefined" ? undefined : null;
export declare function getEmptyValue<T extends EmptyValue = "null">(value?: T): GetEmptyValue<T>;
export interface FormContext {
    /**
     * 空值设置，默认是 null
     */
    emptyValue: EmptyValue;
}
export declare const FormContext: import("react").Context<FormContext>;
export interface FormProviderProps extends Partial<FormContext> {
    children?: ReactNode;
}
export declare const FormProvider: FC<FormProviderProps>;