/**
 * A `SessionToken` object is a unique identifier that groups together `suggest` / `retrieve` calls as part of the
 * [Mapbox Search Box API](https://docs.mapbox.com/api/search/search-box/#retrieve-a-suggested-feature).
 *
 * Session tokens are used for [billing](https://docs.mapbox.com/api/search/search-box/#search-box-api-pricing) and
 * customer-accessible analytics.
 *
 * A [UUIDv4](https://en.wikipedia.org/wiki/Universally_unique_identifier#Version_4_(random)) value is recommended,
 * and is generated if an `id` is not provided.
 *
 * Note that any method that accepts a `SessionToken` object as an argument or option
 * can also accept a unique `string` and will perform an implicit conversion.
 * This flexible type is documented as {@link SessionTokenLike}.
 *
 * @name SessionToken
 * @example
 * ```typescript
 * const token = new SessionToken();
 * console.log(token.id); // = I am a UUIDv4 value!
 * ```
 */
export declare class SessionToken {
    /**
     * The session token in string format.
     */
    readonly id: string;
    constructor(id?: string);
    /**
     * Returns the session token in string format.
     *
     * This is the same as calling `token.id`, and is okay to be used for serialization.
     */
    toString(): string;
    /**
     * Converts a string to a `SessionToken` object.
     *
     * If a `SessionToken` object is passed in, the function returns a copy.
     */
    static convert(token: SessionToken | string): SessionToken;
}
/**
 * A {@link SessionToken} object or string representing a Mapbox Search Box API session token.
 *
 * It's recommended this value is a [UUIDv4](https://en.wikipedia.org/wiki/Universally_unique_identifier#Version_4_(random)) value.
 *
 * @typedef SessionTokenLike
 * @type {SessionToken | string}
 * @example
 * const v1 = new SessionToken();
 * const v2 = new SessionToken('f06e7531-6373-4d5a-8614-b6f313488050');
 * const v3 = 'f06e7531-6373-4d5a-8614-b6f313488050';
 */
export declare type SessionTokenLike = string | SessionToken;