import type { AgentMessage } from "@earendil-works/pi-agent-core";
export type ToolCallStatus = "pending" | "running" | "complete" | "error";
export type MessagePart = {
    type: "text";
    text: string;
} | {
    type: "thinking";
    thinking: string;
} | {
    type: "toolCall";
    id: string;
    name: string;
    args: Record<string, unknown>;
    status: ToolCallStatus;
    result?: string;
    images?: {
        data: string;
        mimeType: string;
    }[];
};
export interface ChatMessage {
    id: string;
    role: "user" | "assistant";
    parts: MessagePart[];
    timestamp: number;
}
export interface SessionStats {
    inputTokens: number;
    outputTokens: number;
    cacheRead: number;
    cacheWrite: number;
    totalCost: number;
    contextWindow: number;
    lastInputTokens: number;
}
export declare function stripEnrichment(content: string | {
    type: string;
    text?: string;
}[], metadataTag?: string): string;
export declare function generateId(): string;
export declare function extractPartsFromAssistantMessage(message: AgentMessage, existingParts?: MessagePart[]): MessagePart[];
export declare function agentMessagesToChatMessages(agentMessages: AgentMessage[], metadataTag?: string): ChatMessage[];
export declare function deriveStats(agentMessages: AgentMessage[]): Omit<SessionStats, "contextWindow">;
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