import type { LockfilePackageInfo } from '@pnpm/lockfile.types';
export type PackagesMap = Map<string, PackageAttributes>;
export type PackageAttributes = LockfilePackageInfo & {
    component?: {
        scope: string;
        name: string;
    };
    requiresBuild?: boolean;
};
export type DependencyEdge = {
    id: string;
    neighbours: DependencyNeighbour[];
    attr?: {
        pkgId?: string;
        transitivePeerDependencies?: string[];
    };
};
export type DependencyNeighbour = {
    id: string;
    /**
     * This is true when the dependency is from optionalDependencies.
     */
    optional?: boolean;
    name?: string;
    specifier?: string;
    lifecycle?: 'runtime' | 'dev';
};
export declare class DependenciesGraph {
    static ROOT_EDGE_ID: string;
    schemaVersion: string;
    packages: PackagesMap;
    edges: DependencyEdge[];
    constructor({ packages, edges, schemaVersion, }: {
        packages: PackagesMap;
        edges: DependencyEdge[];
        schemaVersion?: string;
    });
    serialize(): string;
    static deserialize(data: string): DependenciesGraph | undefined;
    merge(graph: DependenciesGraph): void;
    isEmpty(): boolean;
    /**
     * Returns the edge related to the root component
     */
    findRootEdge(): DependencyEdge | undefined;
}