import { IMigrationOptions } from 'migrations/types';
import { V5IMessageData } from 'migrations/types/old/v5';
import { V7BootstrapPayload } from 'migrations/types/old/v7';
declare global {
    interface Window {
        v7CurrentPayload?: V7BootstrapPayload;
    }
}
export declare function runV6ToV7Migrations(options: IMigrationOptions<V5IMessageData>): IMigrationOptions<V5IMessageData<any>> | Promise<IMigrationOptions<V5IMessageData<any>>>;
export declare function runV7ToV6Migrations(options: IMigrationOptions<V5IMessageData>): IMigrationOptions<V5IMessageData<any>> | Promise<IMigrationOptions<V5IMessageData<any>>>;