export interface ToolUse {
    id: string;
    name: string;
    input?: Record<string, unknown>;
    description?: string;
}
export interface ToolResult {
    id: string;
    output: string;
    isError: boolean;
}
export type ToolGroup = {
    type: 'tool_group';
    toolUse: ToolUse;
    toolResult?: ToolResult;
};
export type ReasoningStep = string | ToolGroup;
/**
 * A turn that is still working towards its first output has no reasoning of its
 * own yet, so the preparing steps stand in. That makes the wait read as an agent
 * which has started working rather than as a loading placeholder. Any real
 * reasoning wins immediately — the stand-ins never compete with it.
 */
export declare function resolveDisplayedReasoning(reasoningData: ReasoningStep[] | null | undefined, preparingSteps?: readonly string[] | null): ReasoningStep[];