/**
 * Event handlers for tool execution events:
 * tool_start, tool_approval_required, tool_update, shell_output,
 * tool_input_start, tool_input_delta, tool_input_end, tool_end.
 *
 * Also includes formatToolResult helper.
 */
import { SubagentExecutionComponent } from '../components/subagent-execution.js';
import type { EventHandlerContext } from './types.js';
export declare function isTaskMutationTool(toolName: string): boolean;
export declare function clearPendingShellOutputs(): void;
export declare function clearToolInputParsers(): void;
export declare function createStaticSubagentComponent(ctx: EventHandlerContext, toolCallId: string, toolName: string, args: unknown): SubagentExecutionComponent | undefined;
export declare function formatToolResult(result: unknown): string;
export declare function handleToolApprovalRequired(ctx: EventHandlerContext, toolCallId: string, toolName: string, args: unknown): void;
export declare function handleToolStart(ctx: EventHandlerContext, toolCallId: string, toolName: string, args: unknown): void;
export declare function handleToolUpdate(ctx: EventHandlerContext, toolCallId: string, partialResult: unknown): void;
/**
 * Handle streaming shell output from execute_command tool.
 */
export declare function handleShellOutput(ctx: EventHandlerContext, toolCallId: string, output: string, _stream: 'stdout' | 'stderr'): void;
/**
 * Handle the start of streaming tool call input arguments.
 * Creates the tool component early so partial args can render as they arrive.
 */
export declare function handleToolInputStart(ctx: EventHandlerContext, toolCallId: string, toolName: string): void;
/**
 * Handle an incremental delta of tool call input arguments.
 * Feeds only the incoming JSON fragment to the stateful parser.
 */
export declare function handleToolInputDelta(ctx: EventHandlerContext, toolCallId: string, argsTextDelta: string): void;
/**
 * Clean up the input buffer when tool input streaming ends.
 */
export declare function handleToolInputEnd(ctx: EventHandlerContext, toolCallId: string): void;
export declare function handleToolEnd(ctx: EventHandlerContext, toolCallId: string, result: unknown, isError: boolean): void;
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