Deno

What This Skill Does

The Deno skill empowers the OpenClaw AI agent to act as a specialized consultant and engineer for the Deno runtime environment. It abstracts away the common configuration hurdles, security pitfalls, and architectural differences that developers encounter when transitioning from Node.js or starting new TypeScript projects. The agent is trained to manage the Deno security model, handle complex dependency resolution, and ensure that import maps and deno.json configurations are syntactically and logically correct. It helps developers avoid runtime crashes caused by missing permissions, network failures from un-vendored imports, or legacy habits from Node.js that are incompatible with Deno's strictly typed and secure-by-default runtime.

Installation

To integrate this skill, run the following command in your terminal: clawhub install openclaw/skills/skills/ivangdavila/deno

Use Cases

• Project Initialization: Automatically generating a deno.json file with correct import maps, lockfiles, and task runners.
• Node.js Migration: Refactoring legacy package.json projects to Deno, including replacing process.env with Deno.env and converting require statements to ESM import statements using node: specifiers.
• Security Hardening: Auditing project scripts to identify overly permissive flags like --allow-all and generating a granular whitelist of necessary filesystem and network access permissions.
• Dependency Management: Managing remote URL imports, setting up vendoring for production stability, and fixing common TypeScript configuration traps such as missing file extensions or decorator conflicts.

Example Prompts

1. "I am migrating a legacy Node.js script to Deno. Can you help me replace the fs and process modules and ensure the permissions are restricted to only the /data directory?"
2. "My Deno production build is failing because it's trying to fetch remote dependencies at runtime. Can you show me how to vendor these dependencies and configure deno.lock for a stable deployment?"
3. "I have an existing project and I need to restrict my --allow-net flag to only reach api.stripe.com and database.production.io. Can you rewrite my execution command?"

Tips & Limitations

To maximize the utility of the Deno skill, always prioritize the use of deno.json over traditional tsconfig.json files, as Deno's internal resolver prefers the former. Remember that Deno 2.x and above requires explicit permission configuration; the agent will guide you to define specific lists for --allow-env, --allow-net, and --allow-run rather than using broad wildcards. Be mindful that while npm: specifiers work for most packages, they do not support native addons. When writing tests, shift your mental model away from Jest-style global describe blocks toward Deno.test and manual resource management to avoid memory leaks. Always test in a non-interactive environment using the --no-prompt flag to ensure CI/CD pipelines do not hang.