import { Context, ConfigEnv, Config, Helpers, Hooks } from "@growthbook/edge-utils";
export interface Env extends ConfigEnv {
    host?: string;
    protocol?: string;
    port?: number;
    returnResponse?: boolean;
}
export declare function init(env?: ConfigEnv, config?: Partial<Config>, hooks?: Hooks<Request, Response>, helpers?: Partial<Helpers<Request, Response>>): Promise<Context<Request, Response>>;
export declare function mapHeadersToConfigEnv(req: {
    origin?: {
        custom?: {
            customHeaders?: Record<string, Array<{
                value?: string;
            }>>;
        };
        s3?: {
            customHeaders?: Record<string, Array<{
                value?: string;
            }>>;
        };
    };
}, originType?: "custom" | "s3", prefix?: string): ConfigEnv;