import { ConditionalCheck, Context, Request } from "stentor-models";
/**
 * Returns true if the user has linked an account, false if they have not.
 *
 * @param request - Request to check
 */
export declare function hasLinkedAccount(request: Request): boolean;
/**
 * Returns true if the user is new.
 *
 * This will be true for the duration of the user's first session, not just
 * the first interaction.
 *
 * It looks for the session storage key SESSION_STORAGE_NEW_USER = "new_user" to exist and be true.
 *
 * @param context
 */
export declare function isNewUser(context: Context): boolean;
/**
 * Checks if the request is for the provided platform.
 *
 * @param request
 * @param platform
 */
export declare function isPlatform(request: Request, platform: string): boolean;
/**
 * Checks the storage if the value at the provided key is equal to the provided value.
 *
 * @param context
 * @param key
 * @param value
 */
export declare function storageEquals(context: Context, key: string, value: string | number | boolean): boolean;
/**
 * Checks the session storage if the value at the provided key is equal to the provided value.
 *
 * @param context
 * @param key
 * @param value
 */
export declare function sessionStorageEqual(context: Context, key: string, value: string | number | boolean): boolean;
/**
 * Returns a system conditional check
 *
 * @param request - Request to perform the checks on
 */
export declare function SystemConditionalCheck<T extends object>(request: Request, context: Context): ConditionalCheck;