/** Module path to the module paths it imports. */
export type ImportGraph = Record<string, string[]>;
/**
 * One cycle in the graph, as the list of modules around it, or null. The list
 * starts at the first module of the cycle the search reaches and does not
 * repeat it at the end.
 */
export declare function findImportCycle(graph: ImportGraph): string[] | null;
export declare function formatImportCycleError(cycle: string[]): string;