export interface SourceStateManagerInfo {
}
export interface SourceStateManager extends SourceStateManagerInfo {
    store: (key: string, value: unknown) => Promise<void>;
    retrieve: (key: string) => Promise<unknown | null>;
    keychain: SourceKeychain;
}
export interface SourceKeychain {
    store: (key: string, value: unknown) => Promise<void>;
    retrieve: (key: string) => Promise<unknown | undefined>;
}
declare global {
    function createSourceStateManager(info: SourceStateManagerInfo): SourceStateManager;
}