export declare const isObjectLiteral: (v: any) => v is object;
export declare const isString: (v: any) => boolean;
export declare const isStringOrNumber: (v: any) => boolean;
export declare const makeCidString: (type: string, id: string | number) => string;
export declare const isNonNegativeInteger: (v: any) => v is number;
export declare function arrayMove(arr: any[], fromIndex: number, toIndex: number): void;
export declare function mergeSets<T>(...iterables: Set<T>[]): Set<T>;
export declare const mergeMaps: <K, V>(...iterables: Map<K, V>[]) => Map<K, V>;