/** Error shape for hosted stream terminal. */
export type HostedStreamTerminalError = {
    code: string;
    message: string;
};
/** Return hosted stream error text. */
export declare function getHostedStreamErrorText(streamError: unknown): string;
/** Error shape for get empty hosted finalized message terminal. */
export declare function getEmptyHostedFinalizedMessageTerminalError(input: {
    finalStep: unknown;
    streamError?: unknown | null;
}): HostedStreamTerminalError;
/** Message shape for should fail empty hosted finalized. */
export declare function shouldFailEmptyHostedFinalizedMessage(input: {
    isAborted: boolean;
    message: {
        parts: ReadonlyArray<unknown>;
    };
}): boolean;
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