Class GeminiApi

packages/openai-adapters/src/apis/Gemini.ts:68–508

}

export class GeminiApi implements BaseLlmApi {
  apiBase: string = "https://generativelanguage.googleapis.com/v1beta/";
  private genAI: GoogleGenAI;

  static maxStopSequences = 5;

  constructor(protected config: GeminiConfig) {
    this.apiBase = config.apiBase ?? this.apiBase;
    // Create GoogleGenAI with native fetch to avoid pollution
    // from Vercel AI SDK packages that can break stream handling
    this.genAI = withNativeFetch(
      () =>
        new GoogleGenAI({
          apiKey: this.config.apiKey,
        }),
    );
  }

  private _oaiPartToGeminiPart(
    part:
      | OpenAI.Chat.Completions.ChatCompletionContentPart
      | OpenAI.Chat.Completions.ChatCompletionContentPartRefusal,
  ): GeminiChatContentPart {
    switch (part.type) {
      case "refusal":
        return {
          text: part.refusal,
        };
      case "text":
        return {
          text: part.text,
        };
      case "input_audio":
        throw new Error("Unsupported part type: input_audio");
      case "image_url":
      default:
        return {
          inlineData: {
            mimeType: "image/jpeg",
            data: (part as ChatCompletionContentPartImage).image_url?.url.split(
              ",",
            )[1],
          },
        };
    }
  }

  public _convertBody(
    oaiBody: ChatCompletionCreateParams,
    isV1API: boolean,
    includeToolCallIds: boolean,
  ) {
    const generationConfig: any = {};

    if (oaiBody.top_p) {
      generationConfig.topP = oaiBody.top_p;
    }
    if (oaiBody.temperature !== undefined && oaiBody.temperature !== null) {