/**
 * Chat Completions API adapter for the OpenAI model provider.
 *
 * @internal
 */
import OpenAI from 'openai';
import type { Message } from '../../types/messages.js';
import type { ModelStreamEvent } from '../streaming.js';
import type { StreamOptions } from '../model.js';
import type { ChatStreamState, OpenAIChatConfig } from './types.js';
export declare const DEFAULT_CHAT_MODEL_ID: "gpt-5.4";
/**
 * Logs a warning for each chat-managed key present in `params`.
 *
 * @internal
 */
export declare function warnManagedParams(params: Record<string, unknown> | undefined): void;
/**
 * Builds a Chat Completions streaming request body.
 *
 * @internal
 */
export declare function formatChatRequest(config: OpenAIChatConfig, messages: Message[], options?: StreamOptions): OpenAI.Chat.Completions.ChatCompletionCreateParamsStreaming;
/**
 * Maps a Chat Completions streaming chunk to one or more SDK events. Mutates
 * `state` and `activeToolCalls` as a side effect.
 *
 * @internal
 */
export declare function mapChatChunkToEvents(chunk: {
    choices: unknown[];
}, state: ChatStreamState, activeToolCalls: Map<number, boolean>): ModelStreamEvent[];
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