Can I use these patterns for both Node.js and Browser development?

Absolutely. The patterns covered—including modules, arrow functions, and destructuring—are standard across modern Node.js environments and all evergreen browsers.

Does it cover asynchronous programming?

Yes, it includes detailed implementation guides for Promises, Async/Await, and handling sequential versus parallel execution for better performance.

What functional programming concepts are included?

It covers higher-order functions, currying, and advanced array methods like map, filter, reduce, and flatMap for clean, declarative data manipulation.

How does this skill help with legacy code?

It provides specific patterns for refactoring old-style JavaScript, such as converting nested callbacks to clean Promises and replacing var with let/const and arrow functions.

Modern JavaScript Patterns

Name: Modern JavaScript Patterns
Author: HermeticOrmus

byHermeticOrmus

0•

API Development

Master ES6+ syntax and functional programming patterns to write clean, efficient, and maintainable JavaScript code.

This skill provides a comprehensive guide and implementation patterns for modern JavaScript (ES6+). It helps developers transition from legacy callback-based code to modern asynchronous patterns using Promises and Async/Await, while leveraging powerful language features like destructuring, spread operators, and functional array methods. Whether you are refactoring older codebases or building new high-performance web applications, this skill ensures your JavaScript is idiomatic, readable, and optimized for modern environments.

Key Features

01Clean code refactoring for legacy JavaScript applications

02Modern ES6+ syntax implementation and best practices

03Functional programming patterns and array transformation pipelines

04Advanced object and array manipulation techniques

05Asynchronous pattern migration from callbacks to Promises/Async-Await

060 GitHub stars

Use Cases

01Refactoring legacy callback-heavy code to modern ES6+ standards

02Optimizing asynchronous operations and error handling in web applications

03Implementing complex data transformation pipelines with map, filter, and reduce

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add hermeticormus/after-the-third-cup modern-javascript-patterns

For use in Claude.ai and ChatGPT

Download Skill