export declare const MESSAGE_TYPES: {
    readonly FUSION_HOST: {
        readonly READY_FOR_BRIDGE: "READY_FOR_BRIDGE";
        readonly STORAGE_ACCESS_GRANTED: "FUSION_STORAGE_ACCESS_GRANTED";
        readonly SESSION_REFRESHED: "FUSION_SESSION_REFRESHED";
    };
    readonly CUSTOM_APP: {
        readonly READY_FOR_HANDSHAKE: "READY_FOR_HANDSHAKE";
        readonly STORAGE_ACCESS_REQUIRED: "FUSION_STORAGE_ACCESS_REQUIRED";
        readonly SESSION_EXPIRED: "FUSION_SESSION_EXPIRED";
    };
};
export type FusionHostMessageType = (typeof MESSAGE_TYPES.FUSION_HOST)[keyof typeof MESSAGE_TYPES.FUSION_HOST];
export type CustomAppMessageType = (typeof MESSAGE_TYPES.CUSTOM_APP)[keyof typeof MESSAGE_TYPES.CUSTOM_APP];
export type MessageType = FusionHostMessageType | CustomAppMessageType;