Can I use this for international applications?

Absolutely. It provides patterns for locale-aware formatting shortcuts that automatically adapt to the user's regional conventions.

Why should I use parseISO instead of the native Date constructor?

Native Date parsing is inconsistent across different browsers and locales. Using parseISO ensures predictable and standard-compliant results for ISO 8601 strings.

Does it support the latest date-fns v4 features?

Yes, it includes patterns for v4's @date-fns/tz package and the new TZDate class for more efficient and modern timezone management.

Why does the skill discourage date mutation?

Mutating existing Date objects creates side effects that lead to difficult-to-track bugs. This skill promotes functional programming by returning new Date objects for every operation.

How does this skill help with bundle size optimization?

It enforces the use of specific, named imports for each function rather than importing the entire library, allowing modern bundlers to remove unused code via tree-shaking.

Date-fns Implementation Patterns

Name: Date-fns Implementation Patterns
Author: agents-inc

byagents-inc

0•

开发者工具

Simplifies date manipulation, formatting, and timezone handling in TypeScript using modular, tree-shakeable date-fns patterns.

This skill provides Claude with specialized expertise for managing dates and times using the date-fns library. It enforces industry best practices such as immutability, tree-shaking for optimized bundle sizes, and safe parsing using parseISO to avoid cross-browser inconsistencies. Whether handling complex timezone transitions with v4's TZDate, generating locale-aware display strings, or performing precise date arithmetic, this skill ensures date logic is robust, testable, and compliant with modern TypeScript standards.

主要功能

01Immutable date arithmetic for predictable and side-effect-free code

02Locale-aware formatting shortcuts for internationalized applications

030 GitHub stars

04Modular imports to enable efficient tree-shaking and smaller bundles

05Strict ISO 8601 parsing patterns to prevent browser-specific bugs

06Comprehensive timezone handling using @date-fns/tz and date-fns-tz

使用场景

01Generating precise date ranges for reporting, calendars, and data filtering

02Building global scheduling systems requiring complex timezone conversions

03Creating locale-specific date displays for international user interfaces

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add agents-inc/skills web-utilities-date-fns

For use in Claude.ai and ChatGPT

Download Skill