import type { ConversationState } from "#client/conversation-state.js";
import { type SessionCallStatus } from "#protocol/session-projection.js";
/**
 * Where a tool call stands. `interrupted` is a call still running when its turn ended without an
 * outcome, or when the reader's stream stopped; `cancelled` follows task or input cancellation.
 */
export type ToolCallStatus = SessionCallStatus | "interrupted";
export interface ToolCallState {
    readonly status: ToolCallStatus;
    /** The call's output, or its latest partial output while it runs. */
    readonly output?: unknown;
    readonly errorText?: string;
    /** A reported execution error code, when available. */
    readonly errorCode?: string;
}
/**
 * A tool call's state for rendering: its status from the session projection, which every reader
 * shares, and its content from the message part. Pass `streaming: false` once the reader's stream
 * stopped, so a call left running reads as interrupted.
 */
export declare function toolCallState(conversation: ConversationState, callId: string, options?: {
    readonly streaming?: boolean;
}): ToolCallState | undefined;