7 JavaScript One-Liners That Replace Entire NPM Packages

Stop Installing Packages for Things JavaScript Already Does Every npm install adds supply chain risk, bundle size, and complexity. Here are 7 cases where a single line of native JavaScript replaces a popular package. 1. UUID Generation (replaces uuid ) const id = crypto . randomUUID (); // "3b241101-e2bb-4d7a-8702-9e3c8a4f5b6a" Package: uuid — 30M+ weekly downloads, 7KB Native since: Node 19+, all modern browsers 2. Deep Clone (replaces lodash.cloneDeep ) const clone = structuredClone ( original ); Package: lodash.cloneDeep — 10M+ weekly downloads Native since: Node 17+, all modern browsers Bonus: Handles circular references, Maps, Sets, Dates, RegExp 3. Array Grouping (replaces lodash.groupBy ) const grouped = Object . groupBy ( users , user => user . role ); // { admin: [...], user: [...], moderator: [...] } Package: lodash.groupBy — 8M+ weekly downloads Native since: Node 21+, Chrome 117+, Firefox 119+ 4. Query String Parsing (replaces qs ) const params = Object . fromEntries ( new