import * as t from "io-ts";
declare const codec: t.ExactC<t.IntersectionC<[t.TypeC<{
    title: t.StringC;
    description: t.StringC;
}>, t.PartialC<{
    imageURL: t.UnionC<[t.Type<string, string, unknown>, t.NullC, t.UndefinedC]>;
}>]>>;
export type DocumentMetadata = t.TypeOf<typeof codec>;
export declare const DocumentMetadata: {
    empty: {
        title: string;
        description: string;
        imageURL: undefined;
    };
    codec: t.ExactC<t.IntersectionC<[t.TypeC<{
        title: t.StringC;
        description: t.StringC;
    }>, t.PartialC<{
        imageURL: t.UnionC<[t.Type<string, string, unknown>, t.NullC, t.UndefinedC]>;
    }>]>>;
};
export {};