import * as IO from "../../helpers/io.js";
export declare enum HttpSignatureHeader {
    RANGE = "RANGE",
    CLIENT_ID = "CLIENT_ID",
    CONTENT_SHA_256 = "CONTENT_SHA_256",
    CREDENTIALS = "CREDENTIALS",
    LAST_EVENT_ID = "LAST_EVENT_ID"
}
export declare const RHttpSignatureHeader: IO.Type<"RANGE" | "CLIENT_ID" | "CONTENT_SHA_256" | "CREDENTIALS" | "LAST_EVENT_ID", string, unknown>;