export declare const CanonicalHeaders: {
    readonly X_PAYMENT: "X-PAYMENT";
    readonly X_PAYMENT_RESPONSE: "X-PAYMENT-RESPONSE";
};
export type HeaderEntry = {
    header: string;
    value: any;
};
export type TransportType = "PAYMENT" | "PAYMENT_RESPONSE" | "PAYMENT_REQUIRED" | "OTHER_REQUEST" | "OTHER_RESPONSE";