import { BaseError } from 'make-error';
import { Constrained } from '../../core';
export declare class InvalidIRIError extends BaseError {
    constructor();
}
export declare const iriSymbol: unique symbol;
export type IRI = Constrained<typeof iriSymbol, string>;
export declare function isIRI(input: unknown): input is IRI;
export declare function iri(input: unknown): IRI;