import ky from 'ky-universal';
export declare type KyInstance = typeof ky;
/**
 * get http requests client
 * @param  prefixUrl        string | undefined
 * @return client
 */
export declare function client(prefixUrl?: string): KyInstance;
/**
 * set authorization header into request
 * @param  request          Request
 * @param  accessToken      string
 */
export declare function setAuthorizationHeader(params: {
    request: Request;
    accessToken: string;
}): void;
/**
 * get http requests client with authorization header
 * @param  prefixUrl        string | undefined
 * @param  accessToken      string
 * @return client
 */
export declare function clientWithAuthorize(params: {
    accessToken: string;
    prefixUrl?: string;
}): KyInstance;
/**
 * normalize http requests client searchParams
 * @param  obj              param object for normalize
 * @return normalized result object
 */
export declare function normalizeForSearchParams(obj: {
    [key: string]: unknown[] | string | number | undefined | null | Date;
}): Record<string, string | number | boolean>;
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