Why should I use native JS utilities over libraries like Lodash?

Native methods offer zero bundle cost, better performance through browser engine optimization, and simpler debugging since there are no library internals to step through.

Can structuredClone handle circular references?

Yes, unlike JSON-based cloning hacks, structuredClone natively handles circular references as well as complex types like Map, Set, Date, and RegExp.

What is the benefit of immutable array methods like toSorted?

Methods like toSorted, toReversed, and toSpliced create new array instances instead of modifying the original, which is critical for maintaining state integrity in reactive frameworks.

Does this skill provide polyfills for older browsers?

The skill focuses on modern ES2022-ES2025 standards. It helps identify when a native feature is available and suggests when a library might still be necessary for complex edge cases or legacy support.

Native JavaScript Utilities

Name: Native JavaScript Utilities
Author: agents-inc

byagents-inc

0•

Developer Tools

Implements modern native JavaScript patterns (ES2022-ES2025) to replace utility libraries like Lodash and reduce bundle size.

The Native JavaScript Utilities skill equips Claude with the expertise to leverage the latest ECMAScript features for common data manipulation and utility tasks. By prioritizing native methods such as structuredClone for deep cloning and ES2023 immutable array operations, it helps developers build high-performance, future-proof applications without the overhead of external utility libraries. This skill ensures code follows modern best practices, emphasizing immutability, zero-bundle-cost solutions, and engine-optimized performance for cleaner, faster codebases.

Key Features

010 GitHub stars

02Native deep cloning via structuredClone for Maps, Sets, and Dates

03Immutable array operations using toSorted, toReversed, and toSpliced

04Advanced data grouping with the ES2024 Object.groupBy method

05High-performance ES2025 Set operations for union and intersection

06Safe property access patterns using optional chaining and nullish coalescing

Use Cases

01Refactoring legacy projects to remove Lodash or Underscore dependencies

02Implementing bug-free state management for reactive frameworks using immutable patterns

03Optimizing web application performance and reducing bundle size in production

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add agents-inc/skills web-utilities-native-js

For use in Claude.ai and ChatGPT

Download Skill