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Formatter Development

Checked
biomejs·vlatest·utilities·Apache-2.0

This skill helps you rapidly develop custom formatters for data transformation and standardization, boosting efficiency in your projects.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add biomejs/biome --skill formatter-development -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

biomejs

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned biomejs/biome at ef0edd4a2f.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
ef0edd4a2f
Manifest
.claude/skills/formatter-development/SKILL.md
Scanned
1 file, 125 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

formatter-development

What it does

This skill enables AI agents to automatically format code using Biome's built-in formatter, ensuring consistent style across projects. It handles syntax highlighting and structural adjustments without requiring manual intervention from developers.

When to use it

  • Standardizing code style in large repositories with multiple contributors.
  • Preparing pull requests by auto-fixing formatting issues before review.
  • Integrating into CI/CD pipelines to enforce coding standards automatically.
  • Cleaning up legacy codebases during refactoring or migration tasks.

Key capabilities

  • Automatic code formatting based on project configuration.
  • Consistent style enforcement across different file types.
  • Seamless integration with existing development workflows.
  • Support for various programming languages and frameworks.

Example prompts

  • "Format all JavaScript files in the src directory using Biome's formatter."
  • "Run the formatter on the entire project to ensure consistent code style."
  • "Apply formatting fixes to the TypeScript files before committing changes."

Tips & gotchas

Ensure your project has a valid biome.json configuration file for optimal results. The skill may not handle custom or highly specialized formatting rules without additional configuration setup.