deno-patterns

Migrate Node.js patterns to Deno with modern TypeScript resource management.

Updated Aug 23, 2026
One-click install
npx skills add https://github.com/jahanson/cc-plugins --skill deno-patterns
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: deno-patterns
Source: https://github.com/jahanson/cc-plugins/tree/main/deno-lsp/skills/deno-patterns
Command: npx skills add https://github.com/jahanson/cc-plugins --skill deno-patterns

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Migrating from Node.js to Deno and adopting modern TypeScript patterns can be challenging; this guide provides a structured approach to resource management, async iteration, and robust error handling.

Core Features & Use Cases

  • Resource management with the using pattern for deterministic cleanup of timers, file handles, and network resources.
  • Async iteration and polling patterns using async generators for cancellable workflows.
  • Error handling using Deno's class-based errors and structured concurrency best practices.
  • Migration guidance that maps Node.js patterns to Deno equivalents and Web API usage.

Quick Start

Refactor a small Deno project to replace manual cleanup with using and convert a polling loop to an async generator and cancelable patterns.

Frequently Asked Questions about deno-patterns

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

FAQPage Schema
How do I manage resource cleanup in Deno using TypeScript?

Resource management in Deno uses the `using` pattern with `Symbol.dispose` for deterministic cleanup of timers, file handles, and network resources. This modern TypeScript approach replaces manual cleanup logic and ensures resources are released safely.

What is the best way to migrate Node.js patterns to Deno?

Migrating Node.js patterns to Deno involves adopting Web API usage and modern TypeScript techniques. You map existing Node.js patterns to Deno equivalents, leveraging Deno's standard library and class-based errors for cleaner, safer code.

How do I implement cancellable async iteration and polling in Deno?

Async iteration and polling in Deno are implemented using async generators. This pattern creates cancellable workflows, allowing you to safely manage and terminate long-running polling loops without relying on manual interval clearing.

How does error handling work in Deno compared to Node.js?

Error handling in Deno utilizes class-based errors and structured concurrency best practices. Unlike standard Node.js error patterns, Deno provides specific error classes to categorize and handle failures more robustly across your application.

Can I use `async using` for asynchronous resource cleanup in Deno?

Yes, Deno supports the `async using` pattern for asynchronous resource cleanup. This feature extends standard resource management by ensuring async operations like network requests are fully resolved before the resource is disposed.