/**
 * Validates that the value is an instance of the platform native File class.
 * This is the primary type validator for native file fields.
 *
 * @example
 * vine.string().use(isNativeFileRule())
 */
export declare const isNativeFileRule: (options?: undefined) => import("../../types.ts").Validation<undefined>;
/**
 * Validates that the file size is at least the specified minimum size in bytes.
 *
 * @example
 * vine.file().use(minSizeRule({ min: 1024 })) // At least 1KB
 *
 * @example
 * vine.file().minSize(1024) // Shorthand method
 */
export declare const minSizeRule: (options: {
    min: number;
}) => import("../../types.ts").Validation<{
    min: number;
}>;
/**
 * Validates that the file size does not exceed the specified maximum size in bytes.
 *
 * @example
 * vine.file().use(maxSizeRule({ max: 2097152 })) // Max 2MB
 *
 * @example
 * vine.file().maxSize(2097152) // Shorthand method
 */
export declare const maxSizeRule: (options: {
    max: number;
}) => import("../../types.ts").Validation<{
    max: number;
}>;
/**
 * Validates that the file's MIME type is one of the allowed types.
 *
 * @example
 * vine.file().use(mimeTypesRule({
 *   mimeTypes: ['image/jpeg', 'image/png']
 * }))
 *
 * @example
 * vine.file().mimeTypes(['image/jpeg', 'image/png']) // Shorthand method
 */
export declare const mimeTypesRule: (options: {
    mimeTypes: string[];
}) => import("../../types.ts").Validation<{
    mimeTypes: string[];
}>;