interface TextPart {
    type: 'text';
    text: string;
    /** If true this text was synthesised client-side (e.g. echo of user input). */
    synthetic?: boolean;
}
type ToolStatus = 'pending' | 'running' | 'completed' | 'error';
interface ToolTime {
    start?: number;
    end?: number;
}
interface ToolState {
    status: ToolStatus;
    input?: unknown;
    output?: unknown;
    error?: string;
    metadata?: Record<string, unknown>;
    time?: ToolTime;
}
interface ToolPart {
    type: 'tool';
    /** Unique ID for this tool invocation. */
    id: string;
    /** Tool name (e.g. "bash", "read", "write", "grep", "glob"). */
    tool: string;
    state: ToolState;
    callID?: string;
}
interface ReasoningPart {
    type: 'reasoning';
    text: string;
    time?: ToolTime;
}
type SessionPart = TextPart | ToolPart | ReasoningPart;

export type { ReasoningPart as R, SessionPart as S, TextPart as T, ToolPart as a, ToolState as b, ToolStatus as c, ToolTime as d };