export interface ItemVersionList {
    [id: string]: string;
}
export interface LockfileGraphNode {
    id: string;
    version: string;
    dependencies: ItemVersionList;
    isInManifest?: boolean;
}
export interface Lockfile {
    [id: string]: LockfileItemData;
}
export interface LockfileItemData {
    version: string;
    dependencies: ItemVersionList;
}
export declare function getItemData(id: string, version: string): Promise<LockfileGraphNode>;
export declare class LockfileGraph {
    nodes: LockfileGraphNode[];
    fromLockfile(lockfile: Lockfile): Promise<void>;
    validate(node: LockfileGraphNode): Promise<void>;
    validateAll(): Promise<void>;
    toLockfile(): Lockfile;
    roots(): Array<LockfileGraphNode>;
    getDependants(node: LockfileGraphNode): Array<LockfileGraphNode>;
    remove(node: LockfileGraphNode): void;
    add(node: LockfileGraphNode): Promise<void>;
    isNodeDangling(node: LockfileGraphNode): boolean;
    private get _danglingCount();
    cleanup(): void;
}