interface CacheControlHeaderOptions {
    /**
     * This should be seconds as a number.
     *
     * See https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#response_directives
     */
    ttl?: number;
    protocol: string;
    response: Response;
}
/**
 * Implementations may place an upper bound on any TTL received, as noted in Section 8 of [rfc2181].
 * If TTL value is unknown, implementations should not send a Cache-Control
 * No matter if TTL value is known or not, implementations should always send a Last-Modified header with the timestamp of the record resolution.
 *
 * @see https://specs.ipfs.tech/http-gateways/path-gateway/#cache-control-response-header
 */
export declare function setCacheControlHeader({ ttl, protocol, response }: CacheControlHeaderOptions): void;
/**
 * This function returns the value of the `Content-Range` header for a given
 * range.
 *
 * If you know the total size of the body, pass it as `byteSize`
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Range
 */
export declare function getContentRangeHeader(byteSize: number | bigint | string, byteStart?: number | bigint | string, byteEnd?: number | bigint | string): string;
export {};
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