import { ILlmHandler, IPromptOptions, IPromptGenericConfig, ModuleOptions } from '../../types';
export declare abstract class BaseHandler implements ILlmHandler {
    protected options: ModuleOptions;
    constructor(options: ModuleOptions);
    abstract execute(isStream: boolean, options: IPromptOptions): Promise<ReadableStream>;
    abstract getConfig(generalConfig: IPromptGenericConfig): any;
    protected createTransformStream(): TransformStream<any, any>;
    protected handleError(error: any, isPlain?: boolean): ReadableStream;
    protected getApiKey(provider: string): string | undefined;
    protected normalizeModelName(model: string, provider: string): string;
    protected writeStreamChunk(writer: WritableStreamDefaultWriter, encoder: TextEncoder, delta: string, isPlain: boolean): Promise<void>;
    protected writeSyncResponse(content: string, metadata: any, isPlain: boolean): ReadableStream;
}