import type { AxiosPromise, AxiosRequestConfig, AxiosResponse, InternalAxiosRequestConfig } from 'axios';
import type { Lambda, LambdaClientConfig } from '@aws-sdk/client-lambda';
import type { Context, Handler } from 'aws-lambda';
import { SignatureV4CryptoInit, SignatureV4Init } from '@aws-sdk/signature-v4';
export interface RetryOptions {
    attempts?: number;
    factor?: number;
    maxTimeout?: number;
    retryCondition?: (err: Error) => boolean;
}
declare type SignatureV4Constructor = SignatureV4Init & SignatureV4CryptoInit;
declare type SignatureV4Optionals = 'credentials' | 'region' | 'sha256' | 'service';
export declare type SignAwsV4Config = Omit<SignatureV4Constructor, SignatureV4Optionals> & Partial<Pick<SignatureV4Constructor, SignatureV4Optionals>>;
export interface AlphaOptions<D = any> extends AxiosRequestConfig<D> {
    retry?: RetryOptions | boolean;
    lambda?: Handler;
    context?: Context;
    signAwsV4?: SignAwsV4Config;
    /**
     * (Optional) The AWS endpoint to use when invoking the target Lambda function.
     */
    lambdaEndpoint?: string;
    /**
     * (Optional) The AWS region to use when invoking the target Lambda function.
     */
    lambdaRegion?: LambdaClientConfig['region'];
    Lambda?: typeof Lambda;
}
export declare type InternalAlphaRequestConfig<D = any> = AlphaOptions<D> & InternalAxiosRequestConfig;
export declare type AlphaAdapter = (config: InternalAlphaRequestConfig) => AxiosPromise;
export declare type AlphaInterceptor = (config: InternalAlphaRequestConfig) => (Promise<InternalAlphaRequestConfig> | InternalAlphaRequestConfig);
export interface AlphaResponse<ResponseData = any, ConfigData = any> extends AxiosResponse<ResponseData> {
    config: InternalAlphaRequestConfig<ConfigData>;
}
export interface HandlerRequest<T = Record<string, any>> {
    event: T;
    context: Context;
}
export {};