import { BaseError } from 'make-error';
import { Constrained } from '../../core';
export declare class InvalidMimeTypeError extends BaseError {
    constructor();
}
export declare const mimeTypeSymbol: unique symbol;
export type MimeType = Constrained<typeof mimeTypeSymbol, string>;
export declare function isMimeType(input: unknown): input is MimeType;
export declare function mimeType(input: unknown): MimeType;