date-fns
Modern JavaScript date utility library with comprehensive formatting functions.
Utilities npm MIT
Used in agent projects
1,079
8.5% of 12,697 public repos built with AI coding agents
Rank in utilities
#2 of 109
by use in those projects
Downloads
97.6M
npm, last 7 days, date-fns
GitHub stars
36.6K
last push Sep 22, 2026
How date-fns is used
date-fns is a dependency in 1,079 of the 12,697 public GitHub projects set up for AI coding agents that we scanned (8.5%), #2 of 109 in utilities. The most used alternative there is clsx. Projects that use it most often also use Lucide React (82.3%), clsx (80.6%), Tailwind Merge (79.2%). It is more common in projects set up for Kiro (18.5%) than for OpenCode (7.2%).
Often used with date-fns
| Lucide React | 82.3% of date-fns projects · 4.1× more than average |
|---|---|
| clsx | 80.6% of date-fns projects · 4.5× more than average |
| Tailwind Merge | 79.2% of date-fns projects · 4.7× more than average |
| Class Variance Authority | 76.1% of date-fns projects · 5.4× more than average |
| Zod | 74.1% of date-fns projects · 4.4× more than average |
| Radix UI | 71.4% of date-fns projects · 6.0× more than average |
| Recharts | 64.6% of date-fns projects · 7.9× more than average |
| React Hook Form | 63.7% of date-fns projects · 7.9× more than average |
By coding agent
| Cursor | 14.7% of projects set up for it |
|---|---|
| Claude Code | 9.9% of projects set up for it |
| GitHub Copilot | 9.3% of projects set up for it |
| Gemini CLI | 10.3% of projects set up for it |
| Devin Desktop | 14.6% of projects set up for it |
| OpenAI Codex | 7.6% of projects set up for it |
| Kiro | 18.5% of projects set up for it |
| OpenCode | 7.2% of projects set up for it |
Share of public repos configured for each agent that list date-fns as a dependency.
Install
| Package | npm install date-fns |
|---|---|
| Main stacks | Next.js (602), TypeScript / JavaScript (427), Python (16), PHP (14) |
| Example projects | NG-ZORRO/ng-zorro-antd, ding113/claude-code-hub, veithly/BountyBoard, wesbos/wesbos, Doist/todoist-mcp |
Alternatives to date-fns
| Tool | Used in agent projects | Downloads / wk | GitHub stars | License |
|---|---|---|---|---|
| clsx npm Tiny utility for conditionally constructing className strings. |
2,251 (17.7%) | 126M | 9,847 | MIT |
| uuid npm Generate RFC9562 compliant UUIDs for unique identifiers in applications. |
454 (3.6%) | 296M | 15.3K | MIT |
| PyYAML pypi YAML parser and emitter for reading and writing YAML configuration files. |
385 (3.0%) | 239M | 2,954 | MIT |
| Lodash npm Modular utility library with methods for common programming tasks and data manipulation. |
269 (2.1%) | 162M | 61.4K | MIT |
| bn.js npm Big number library for handling arbitrary-precision integers in JavaScript. |
217 (1.7%) | 62.1M | 1,230 | MIT |
| python-dateutil pypi Extensions to Python's datetime module for advanced date and time manipulation. |
165 (1.3%) | 233M | 2,638 | Dual License |
| yaml npm JavaScript YAML parser and stringifier with full spec compliance. |
164 (1.3%) | 179M | 1,693 | ISC |
| Nanoid npm Tiny, secure, URL-friendly unique string ID generator for JavaScript. |
161 (1.3%) | 269M | 27.1K | MIT |