export type WebViewHostSessionIdentity = {
    connectionId: string;
    epoch: number;
    generation: number;
};
type WebViewHostSessionState = "awaitingActivation" | "awaitingConnection" | "connected" | "closed";
type WebViewHostSessionSnapshot = {
    connection: WebViewHostSessionIdentity | null;
    epoch: number;
    state: WebViewHostSessionState;
};
type WebViewHostSessionAcceptance = "accepted" | "duplicate" | "rejected";
export type WebViewHostSessionController = {
    getSnapshot: () => WebViewHostSessionSnapshot;
    advanceEpoch: () => number;
    acceptConnection: (identity: WebViewHostSessionIdentity) => WebViewHostSessionAcceptance;
    confirmActivation: (identity: WebViewHostSessionIdentity) => WebViewHostSessionAcceptance;
    isCurrentConnection: (identity: WebViewHostSessionIdentity) => boolean;
    close: () => void;
};
export declare function createWebViewHostSessionController(): WebViewHostSessionController;
export {};