export declare const WKWebpagePreferencesUpgradeToHTTPSPolicy: {
    readonly KeepAsRequested: 0;
    readonly AutomaticFallbackToHTTP: 1;
    readonly UserMediatedFallbackToHTTP: 2;
    readonly ErrorOnFailure: 3;
};
export type WKWebpagePreferencesUpgradeToHTTPSPolicy = typeof WKWebpagePreferencesUpgradeToHTTPSPolicy[keyof typeof WKWebpagePreferencesUpgradeToHTTPSPolicy];
