import type { SupportedEncodings } from "../http/index.js";
export declare class AcceptEncoding implements SupportedEncodings {
    private gzip_;
    private deflate_;
    private br_;
    private zstd_;
    gzip(): boolean;
    setGzip(enable: boolean): void;
    deflate(): boolean;
    setDeflate(enable: boolean): void;
    br(): boolean;
    setBr(enable: boolean): void;
    zstd(): boolean;
    setZstd(enable: boolean): void;
    toHeaderValue(): string | null;
}