import type { CodexEventParams } from '../../domain/costs/codex-event-format.js';
import type { NormalizedEvent } from '../normalize/event-types.js';
/**
 * Translate a Codex JSON-RPC event (method + params) to a NormalizedEvent.
 * Returns null for events that have no NormalizedEvent counterpart in Phase 1
 * (internal/transient or richer than current NormalizedEvent surface).
 *
 * Coverage:
 *   item/completed (agentMessage)         → assistant_text { text }
 *   account/rateLimits/updated            → rate_limit { raw }
 *   thread/error                          → error { message, fatal:false }
 *   default / commandExecution / fileChange / token-usage / etc. → null
 *
 * session_started and turn_complete are synthesized by the adapter wrapper from
 * non-event sources (sessionId resolution + turn-result reduction), not by this parser.
 */
export declare function codexEventToNormalized(method: string, params: CodexEventParams): NormalizedEvent | null;