npm-check-updates/build/src/types/Cacher.d.ts

Find newer versions of dependencies than what your package.json allows

export interface CacheData {
    timestamp?: number;
    packages?: Record<string, string | undefined>;
}
export type Cacher = {
    get(name: string, target: string): string | undefined;
    set(name: string, target: string, version: string): void;
    save(): Promise<void>;
    log(): void;
};