export interface CopilotEvent {
    type?: string;
    kind?: string;
    role?: string;
    /** The real 1.0.83 envelope: every event's payload lives here. The tool
     *  fields are `tool.execution_start`/`tool.execution_complete`'s (verified
     *  live against copilot 1.0.88). */
    data?: {
        content?: unknown;
        text?: string;
        toolCallId?: string;
        toolName?: string;
        arguments?: unknown;
        success?: boolean;
        result?: {
            content?: unknown;
        };
        /** A shell tool's exit status (seen live on 1.0.88). */
        shellExecution?: {
            exitCode?: number;
        };
    };
    /** `result` (the last line) carries the session id `--resume` takes. */
    sessionId?: string;
    content?: unknown;
    text?: string;
    message?: {
        content?: unknown;
        text?: string;
    };
}
/** Token counts for ONE `copilot -p` invocation, read back from the JSON
 *  copilot writes to `--usage-output-file`. */
export interface CopilotUsage {
    /** Total prompt tokens (fresh + cache read + cache write). */
    inputTokens: number;
    outputTokens: number;
}
/**
 * One parsed copilot NDJSON line, normalized for incremental streaming.
 *   - 'assistant': rawText is the event's whole text (fences intact) for
 *     end-of-turn tool-call parsing; text is the fence-stripped prose,
 *     present only when non-empty.
 *   - 'native':    copilot's own tool call starting (`toolStart`) or
 *     finishing (`toolEnd`), paired by its toolCallId.
 *   - 'tool':      any other event whose type/kind looks like tool activity
 *     (e.g. tool.execution_partial_result) — forwarded by run() as a
 *     `tool_use` liveness AgentMessage (see header).
 *   - 'session':   the closing `result` line's session id.
 */
export interface CopilotStreamEvent {
    kind: 'assistant' | 'native' | 'tool' | 'session';
    text?: string;
    rawText?: string;
    toolName?: string;
    toolStart?: {
        id: string;
        name: string;
        input: unknown;
    };
    toolEnd?: {
        id: string;
        output: unknown;
        isError: boolean;
        exitCode?: number;
    };
    sessionId?: string;
}
export interface TurnOutcome {
    exitCode: number;
    stderrTail: string;
    timedOut: boolean;
    /** True when the process was killed by STARTUP_GRACE_MS with no output —
     *  likely stuck on copilot's documented directory-trust/path-access hang. */
    hangSuspected: boolean;
    /** This invocation's real token usage (#181), or undefined when copilot
     *  made no model call at all. */
    usage?: CopilotUsage;
}
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