import { ChatCompletion, ChatCompletionChunk, ChatCompletionCreateParamsNonStreaming, ChatCompletionCreateParamsStreaming, Completion, CompletionCreateParamsNonStreaming, CompletionCreateParamsStreaming, CreateEmbeddingResponse, EmbeddingCreateParams, Model } from "openai/resources/index";
import { VertexAIConfig } from "../types.js";
import { AnthropicApi } from "./Anthropic.js";
import { BaseLlmApi, CreateRerankResponse, FimCreateParamsStreaming, RerankCreateParams } from "./base.js";
import { GeminiApi } from "./Gemini.js";
import { OpenAIApi } from "./OpenAI.js";
export declare class VertexAIApi implements BaseLlmApi {
    protected config: VertexAIConfig;
    anthropicInstance: AnthropicApi;
    geminiInstance: GeminiApi;
    mistralInstance: OpenAIApi;
    private clientPromise?;
    private genAI?;
    static AUTH_SCOPES: string;
    constructor(config: VertexAIConfig);
    private setupGenAI;
    private setupAuthentication;
    private getApiBase;
    private determineVertexProvider;
    private getAuthHeaders;
    private buildUrl;
    private convertAnthropicBody;
    private convertGeminiBody;
    chatCompletionNonStream(body: ChatCompletionCreateParamsNonStreaming, signal: AbortSignal): Promise<ChatCompletion>;
    chatCompletionStream(body: ChatCompletionCreateParamsStreaming, signal: AbortSignal): AsyncGenerator<ChatCompletionChunk>;
    completionNonStream(body: CompletionCreateParamsNonStreaming, signal: AbortSignal): Promise<Completion>;
    completionStream(body: CompletionCreateParamsStreaming, signal: AbortSignal): AsyncGenerator<Completion>;
    fimStream(body: FimCreateParamsStreaming, signal: AbortSignal): AsyncGenerator<ChatCompletionChunk>;
    embed(body: EmbeddingCreateParams): Promise<CreateEmbeddingResponse>;
    rerank(body: RerankCreateParams): Promise<CreateRerankResponse>;
    list(): Promise<Model[]>;
}