export type EgressErrorCode = "INVALID_URL" | "SCHEME_DENIED" | "PORT_DENIED" | "DENIED_PRIVATE_ADDRESS" | "DNS_FAILED" | "BUDGET_EXHAUSTED" | "REDIRECT_LOOP" | "ORIGIN_DENIED" | "TIMEOUT" | "ABORTED" | "RESPONSE_TOO_LARGE" | "REQUEST_TOO_LARGE" | "NETWORK_ERROR" | "INVALID_PLAYLIST" | "INVALID_CONFIGURATION" | "INVALID_REQUEST" | "BUDGET_UNAVAILABLE";
/** Messages intentionally omit URLs, credentials and upstream error strings. */
export declare class EgressError extends Error {
    readonly code: EgressErrorCode;
    readonly retryAfterMs?: number | undefined;
    constructor(code: EgressErrorCode, message: string, retryAfterMs?: number | undefined);
}