export type PublicAssistantMessageEvent = {
    type: "start";
    partial: unknown;
} | {
    type: "text_start";
    contentIndex: number;
    partial: unknown;
} | {
    type: "text_delta";
    contentIndex: number;
    delta: string;
    partial: unknown;
} | {
    type: "text_end";
    contentIndex: number;
    content: string;
    partial: unknown;
} | {
    type: "thinking_start";
    contentIndex: number;
    partial: unknown;
} | {
    type: "thinking_delta";
    contentIndex: number;
    delta: string;
    partial: unknown;
} | {
    type: "thinking_end";
    contentIndex: number;
    content: string;
    partial: unknown;
} | {
    type: "toolcall_start";
    contentIndex: number;
    partial: unknown;
} | {
    type: "toolcall_delta";
    contentIndex: number;
    delta: string;
    partial: unknown;
} | {
    type: "toolcall_end";
    contentIndex: number;
    toolCall: unknown;
    partial: unknown;
} | {
    type: "done";
    reason: "stop" | "length" | "toolUse";
    message: unknown;
} | {
    type: "error";
    reason: "aborted" | "error";
    error: unknown;
};
export type TurnStartEventLike = {
    turnIndex: number;
};
export type TurnEndEventLike = {
    turnIndex: number;
    message: unknown;
};
export type MessageStartEventLike = {
    message: unknown;
};
export type MessageUpdateEventLike = {
    message: unknown;
    assistantMessageEvent: PublicAssistantMessageEvent;
};
export type MessageEndEventLike = {
    message: unknown;
};
export type ToolExecutionStartEventLike = {
    toolCallId: string;
    toolName: string;
    args: unknown;
};
export type ToolExecutionUpdateEventLike = {
    toolCallId: string;
};
export type ToolExecutionEndEventLike = {
    toolCallId: string;
    toolName: string;
    result: unknown;
    isError: boolean;
};
export type NormalizedAssistantEvent = {
    type: "start";
} | {
    type: "text_start";
    contentIndex: number;
} | {
    type: "text_delta";
    contentIndex: number;
    delta: string;
} | {
    type: "text_end";
    contentIndex: number;
    content: string;
} | {
    type: "thinking_start";
    contentIndex: number;
} | {
    type: "thinking_delta";
    contentIndex: number;
    delta: string;
} | {
    type: "thinking_end";
    contentIndex: number;
    content: string;
} | {
    type: "toolcall_start";
    contentIndex: number;
} | {
    type: "toolcall_delta";
    contentIndex: number;
    delta: string;
} | {
    type: "toolcall_end";
    contentIndex: number;
    toolCall: unknown;
} | {
    type: "done";
    reason: "stop" | "length" | "toolUse";
} | {
    type: "error";
    reason: "aborted" | "error";
};
/** Remove cumulative snapshots while preserving every semantic stream event. */
export declare function normalizeAssistantEvent(event: PublicAssistantMessageEvent): NormalizedAssistantEvent;
export declare function messageRole(message: unknown): string;
export declare function toolCallIdFromAssistantEvent(event: NormalizedAssistantEvent): string | null;
export declare function toolStartedPayload(event: ToolExecutionStartEventLike): Record<string, unknown>;
export declare function toolFinishedPayload(event: ToolExecutionEndEventLike): Record<string, unknown>;
export declare function turnFinishedPayload(event: TurnEndEventLike, messageId: string | undefined, toolCallIds: string[]): Record<string, unknown>;