import type { ToolCall } from '../../types/ToolCall';
/**
 * Builds a deterministic idempotency key for tool calls so the UI can track updates.
 *
 * @param toolCall - Tool call payload or snapshot.
 * @returns Stable key that identifies the same tool call instance.
 *
 * @private internal helper for tool call streaming
 */
export declare function resolveToolCallIdempotencyKey(toolCall: ToolCall): string;