import type { CredentialValueSource, ModelConfig, RealtimeCaps, RealtimeSession, SecretRedactor } from "@arnilo/prism";
export interface RealtimeTransportOptions {
    /** Official Realtime WebSocket authentication headers. */
    readonly headers: Readonly<Record<string, string>>;
}
export interface OpenAIRealtimeSessionOptions {
    /** Host-owned local session id. Generated when omitted. */
    readonly id?: string;
    /** Stable host ownership identifier, sent to OpenAI as its safety identifier. */
    readonly ownerId: string;
    readonly model: ModelConfig;
    readonly apiKey?: CredentialValueSource;
    readonly baseUrl?: string;
    /** Injectable transport factory for tests or a host WebSocket implementation. */
    readonly webSocket?: (url: string, options: RealtimeTransportOptions) => RealtimeTransport;
    readonly caps?: RealtimeCaps;
    readonly redactor?: SecretRedactor;
    readonly signal?: AbortSignal;
}
/** Minimal transport surface the session consumes. Matches the global WebSocket subset. */
export interface RealtimeTransport {
    readonly readyState: number;
    send(data: string): void;
    close(code?: number, reason?: string): void;
    addEventListener(type: "open" | "message" | "close" | "error", handler: (event: {
        readonly data?: string;
    }) => void): void;
    removeEventListener?(type: "open" | "message" | "close" | "error", handler: (event: {
        readonly data?: string;
    }) => void): void;
}
export declare function createOpenAIRealtimeSession(options: OpenAIRealtimeSessionOptions): RealtimeSession;