import type { BodyCodec, BodyDeserializer, BodySerializer } from "./types.ts";
/** Extracts the lowercase base media type without header parameters. */
export declare function normalizeMediaType(contentType: string | undefined | null): string;
/** Resolves a matching body codec for a given media type from a list of codecs. */
export declare function resolveBodyCodec<TSource>(mediaType: string, codecs: readonly BodyCodec<TSource>[]): {
    serialize?: BodySerializer;
    deserialize?: BodyDeserializer<TSource>;
} | undefined;