export type IDtoIsFunction = (val: any) => {
    isOk: boolean;
    msg?: string;
};
declare const dtoIs: {
    isEmail: (val: any) => {
        isOk: boolean;
        msg?: undefined;
    } | {
        isOk: boolean;
        msg: string;
    };
    isBase64: (val: any) => {
        isOk: boolean;
        msg?: undefined;
    } | {
        isOk: boolean;
        msg: string;
    };
    isUUID: (val: any) => {
        isOk: boolean;
        msg?: undefined;
    } | {
        isOk: boolean;
        msg: string;
    };
    isDataURI: (val: any) => {
        isOk: boolean;
        msg?: undefined;
    } | {
        isOk: boolean;
        msg: string;
    };
    isURL: (val: any) => {
        isOk: boolean;
        msg?: undefined;
    } | {
        isOk: boolean;
        msg: string;
    };
    isIP: (val: any) => {
        isOk: boolean;
        msg?: undefined;
    } | {
        isOk: boolean;
        msg: string;
    };
    /**
     * 是否在指定的值列表中
     *
     * 相当于白名单，只允许列表中的值通过验证
     *
     * @example
     * import {dto, dtoIs } from "../../../index.js"
     * const {in} = dtoIs
     *
     * class DtoA {
     *  name : dto.String({is:in(['alice', 'bob'])})
     * }
     *
     */
    in: (values: any[]) => (val: any) => {
        isOk: boolean;
        msg?: undefined;
    } | {
        isOk: boolean;
        msg: string;
    };
    /**
     * 是否不在指定的值列表中
     * 相当于黑名单，不允许列表中的值通过验证
     *
     * @example
     * import {dto, dtoIs } from "../../../index.js"
     * const {notIn} = dtoIs
     *
     * class DtoA {
     *  name : dto.String({is:notIn(['admin', 'root'])})
     * }
     */
    notIn: (values: any[]) => (val: any) => {
        isOk: boolean;
        msg?: undefined;
    } | {
        isOk: boolean;
        msg: string;
    };
};
export { dtoIs };
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