import { Validator, ValidatorOptions } from './Validator';
import { I18nMessage } from '../i18n';
interface FileNoHash {
    size: number;
    path: string;
    name: string;
    /**
     * mime type like: image/jpeg
     */
    type: string;
    mtime: Date;
}
interface FileWithHash extends FileNoHash {
    hash: string;
}
interface FileOptions<Type, IsRequired extends boolean> extends ValidatorOptions<Type, IsRequired> {
    hash?: 'md5' | 'sha1';
    multiples?: boolean;
    maxSize?: number;
    mimeTypes?: string[];
}
export declare class FileValidator<Type = FileNoHash, T extends boolean = true> extends Validator<FileOptions<Type, T>> {
    optional(): FileValidator<Type, false>;
    hash(crypto: 'md5' | 'sha1'): FileValidator<Type extends Array<any> ? FileWithHash[] : FileWithHash, T>;
    multiples(): FileValidator<Type[], T>;
    maxSize(byte: number): this;
    allowMimeTypes(types: string[]): this;
    protected validateValue(i18n: I18nMessage, obj: Record<string, any>, key: string, superKeys: string[]): string | void;
}
export {};