import type MaybeArray from './types/MaybeArray';
import type Xor from './types/Xor';
type Options = Xor<{
    /**
     * The Mollie API key, starting with `'test_'` or `'live_'`.
     */
    apiKey: string;
}, {
    /**
     * OAuth access token, starting with `'access_''.
     */
    accessToken: string;
}> & {
    /**
     * One or an array of version strings of the software you are using, such as `'RockenbergCommerce/3.1.12'`.
     */
    versionStrings?: MaybeArray<string>;
    /**
     * The headers set in the requests sent to the Mollie API. `Authorization`, `User-Agent`, `Accept`,
     * `Accept-Encoding`, and `Content-Type` are set by this library directly. Setting them here has no effect.
     */
    headers?: Record<string, string>;
    /**
     * The URL of the root of the Mollie API. Default: `'https://api.mollie.com:443/v2/'`.
     */
    apiEndpoint?: string;
};
/**
 * Throws a `TypeError` if the passed options object does not contain an `apiKey` or an `accessToken`.
 */
export declare function checkCredentials(options: Options): void;
export default Options;