async-await-patterns

Enforce async/await for JavaScript and TypeScript asynchronous code.

8|5|Updated Dec 30, 2025
One-click install
npx skills add https://github.com/axiomantic/spellbook --skill async-await-patterns
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: async-await-patterns
Source: https://github.com/axiomantic/spellbook/tree/main/skills/async-await-patterns
Command: npx skills add https://github.com/axiomantic/spellbook --skill async-await-patterns

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This guide helps developers write correct, maintainable asynchronous code by enforcing the use of async/await, preventing common pitfalls like unhandled rejections and mixed promise chains.

Core Features & Use Cases

  • Enforces explicit async boundaries in functions that perform asynchronous work.
  • Promotes awaiting all promises and using try/catch for error handling.
  • Encourages parallelism with Promise.all for independent operations and sequential flows when dependencies exist.

Quick Start

Refactor all asynchronous operations to use async/await, ensuring every promise is awaited inside a try/catch.

Frequently Asked Questions about async-await-patterns

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I handle async/await errors in JavaScript without unhandled promise rejections?

To handle async/await errors in JavaScript, wrap every awaited promise inside a try/catch block. This enforces explicit async boundaries and catches rejections reliably across API calls, file I/O, and timers.

What is the best way to run parallel async operations in TypeScript?

The best way to run parallel async operations in TypeScript is using Promise.all. Await Promise.all for independent asynchronous tasks to achieve safe parallelism, and reserve sequential awaits for operations with dependencies.

When do I need async/await instead of promise chains for API calls?

You need async/await instead of promise chains when you require predictable control flow and strong error handling. Awaiting promises explicitly prevents mixed promise chains and makes asynchronous API calls maintainable.

How do I refactor JavaScript promise chains to use async/await?

To refactor JavaScript promise chains, convert the function to an async function, replace .then() callbacks with awaited promises, and wrap the awaited operations in a try/catch block for reliable error handling.

Does async/await work with file I/O and timers in TypeScript?

Yes, async/await works with file I/O and timers in TypeScript. You can await promise-based file I/O operations and timer functions directly, ensuring predictable control flow and safe parallelism across all asynchronous boundaries.