export interface UserContext {
    userHandle: string;
    displayName?: string;
    isOwner: boolean;
}
export interface Helpers {
    requireAccess(channelId: string): void;
    requireRole(roleName: string): void;
    isImgGenVersionAppend(doc: unknown, oldDoc: unknown): boolean;
}
export interface AccessDescriptor {
    channels?: string[];
    audience?: {
        followersOf?: string;
        mutualsOf?: string;
    };
    inheritRead?: {
        db: string;
        docId: string;
    };
    members?: Record<string, string[]>;
    grant?: {
        users?: Record<string, string[]>;
        roles?: Record<string, string[]>;
        public?: string[];
    };
    expiry?: string | number | null;
    allowAnonymous?: boolean;
}
export type AccessFunction = (doc: unknown, oldDoc: unknown, user: UserContext | null, ctx: Helpers) => AccessDescriptor;