type HookEvent = Record<string, unknown>;
type SessionFields = Record<string, string>;
type AdapterOutput = {
    readonly sessionFields: SessionFields;
    readonly priorAssistant: string | null;
    readonly usesTranscript: boolean;
};
/**
 * Normalise a raw hook event into session fields, priorAssistant context, and
 * transcript usage flag — varying by agent type.
 *
 * - "codex": reads model/permission_mode/source + last_assistant_message
 *   directly from the event (no transcript file).
 * - "pi": same event-carried shape as codex — the events are authored by
 *   glen's own pi extension (packages/pi-plugin/extensions/glen.ts); pi's
 *   session file is a pi-specific JSONL tree glen doesn't parse.
 * - "claude-code" and generic/unknown: uses parseTranscript for priorAssistant
 *   and the user-message index (nextUserMessageIndex) that callers need for
 *   idempotency key derivation.
 */
declare const adaptAgentEvent: (agent: string | undefined, event: HookEvent, transcriptLines: readonly string[]) => AdapterOutput;
export { adaptAgentEvent };