Can this skill help migrate from ES5 to ES6+?

Yes, it is specifically designed to identify legacy patterns like var declarations and traditional function syntax, replacing them with modern equivalents like const/let, arrow functions, and template literals.

How does this skill improve code maintainability?

By promoting functional programming principles, immutability, and clean object literals, it helps reduce side effects and creates more predictable, testable code.

Is this skill relevant for Node.js developers?

Yes, the patterns provided are environment-agnostic and apply equally well to frontend browser development and backend Node.js or Deno applications.

Does it support advanced asynchronous programming?

Absolutely. It provides patterns for Promises, Async/Await, and advanced combinators like Promise.allSettled and Promise.any to handle complex concurrency effectively.

Modern JavaScript Patterns

Name: Modern JavaScript Patterns
Author: HermeticOrmus

byHermeticOrmus

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Developer Tools

Master ES6+ syntax and functional programming techniques to write clean, maintainable, and performant JavaScript code.

About

This skill equips Claude Code with a comprehensive understanding of modern ECMAScript standards and functional programming paradigms. It provides deep guidance on refactoring legacy codebases, optimizing complex asynchronous operations with Promises and Async/Await, and implementing elegant data transformation pipelines. By focusing on readability and industry-standard best practices, this skill ensures that your JavaScript applications are built on a foundation of efficient, scalable, and modular code patterns.

Key Features

Implements advanced asynchronous logic using Async/Await and Promise combinators
Refactors legacy ES5 code to modern ES6+ syntax and patterns
Applies functional programming techniques including Map, Filter, and Reduce
Provides structural guidance for maintainable modules and higher-order functions
Optimizes object and array manipulation with destructuring and spread operators
2 GitHub stars

Use Cases

Modernizing a legacy codebase to improve readability and reduce technical debt
Building robust data processing pipelines using immutable functional patterns
Converting complex callback-heavy logic into clean, linear asynchronous structures

About

Key Features

Implements advanced asynchronous logic using Async/Await and Promise combinators
Refactors legacy ES5 code to modern ES6+ syntax and patterns
Applies functional programming techniques including Map, Filter, and Reduce
Provides structural guidance for maintainable modules and higher-order functions
Optimizes object and array manipulation with destructuring and spread operators
2 GitHub stars

Use Cases

Modernizing a legacy codebase to improve readability and reduce technical debt
Building robust data processing pipelines using immutable functional patterns
Converting complex callback-heavy logic into clean, linear asynchronous structures