Why does this skill forbid node_modules?

Deno's philosophy is to reduce supply chain attack surfaces. This skill promotes the use of JSR and npm specifiers within a central import map in deno.json to manage dependencies without a local node_modules folder.

Does this skill handle TypeScript configuration?

Yes, it configures the strictest possible compiler settings directly within deno.json, eliminating the need for a separate tsconfig.json while supporting modern features like ES2024+.

What testing frameworks are supported?

This skill prioritizes Deno's built-in test runner and the @std/assert library, enforcing unit test co-location and specific code coverage thresholds (80% line coverage).

How does this skill help with Deno security?

It enforces the Principle of Least Privilege by guiding developers to use specific permission flags instead of broad access, ensuring scripts only access necessary files, network domains, and environment variables.

Deno Core Best Practices

Name: Deno Core Best Practices
Author: jahanson

byjahanson

0•

Security & Testing

Enforces professional Deno TypeScript standards for project configuration, dependency management, and secure runtime permissions.

The Deno Core skill provides a comprehensive framework for building high-quality Deno applications by enforcing strict TypeScript standards and modern development patterns. It guides users through optimal project configuration using deno.json, manages dependencies via import maps, and ensures robust security through the principle of least privilege. By emphasizing Deno's built-in tooling for testing, linting, and formatting, this skill helps developers eliminate Node.js anti-patterns and build more secure, maintainable, and high-performance codebases.

Key Features

01Explicit permission model guidance for least-privilege security

02Elimination of Node.js anti-patterns in favor of native Deno APIs

030 GitHub stars

04Strict dependency version pinning and lockfile enforcement

05Unified configuration management using deno.json and import maps

06Standardized testing patterns with co-location and coverage requirements

Use Cases

01Setting up new Deno projects with strict TypeScript and security defaults

02Migrating TypeScript codebases from Node.js to Deno-native patterns

03Standardizing CI/CD workflows for Deno testing, linting, and formatting

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add jahanson/cc-plugins deno-core

For use in Claude.ai and ChatGPT

Download Skill