Comparing
Modern JavaScript date utility library
python implementation for lodash
| Metric | date-fns | lodash |
|---|---|---|
| Ecosystem | npm | Python |
| Difficulty | Intermediate | Beginner ✓ |
| Weekly downloads | 71.4M↑ | 0 |
| Latest version | v4.1.0 | v0.0.1 |
| Recipes | 2↑ | 1 |
date-fns only
Shared
lodash only
Use date-fns for formatting, parsing, arithmetic (add/subtract days, months, years), comparison, and locale-aware output in any JavaScript environment. Import only what you need and the bundle impact is minimal.
Use lodash for array manipulation (chunk, flatten, groupBy, uniq), object utilities (cloneDeep, merge, pick, omit), function helpers (debounce, throttle, memoize), and collection operations. Import only the functions you need (import groupBy from 'lodash/groupBy') to keep bundle size down.
date-fns v2 has limited first-party timezone support — for complex timezone-aware applications use Luxon or the Temporal polyfill. The function-heavy API can feel verbose for simple one-liners; Day.js's method chaining is more readable in those cases.
Modern JavaScript (ES2020+) has absorbed many lodash features natively: Array.flat(), Object.fromEntries(), optional chaining, nullish coalescing. Audit what you actually need before adding lodash — you may already have it in the language.
date-fns
lodash