How do I install the Biome To Oxc skill?

Run npx skillmds@latest add dansnow/biome-to-oxc in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Biome To Oxc safe to use?

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Which AI agents work with Biome To Oxc?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Biome To Oxc free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Biome To Oxc?

dansnow (@dansnow) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Biome To Oxc by dansnow — Agent Skill

Name: Biome To Oxc
Author: dansnow

Biome To Oxc

Migrate JavaScript/TypeScript projects from Biome to oxlint + oxfmt with Prettier fallback. Use when user asks to "migrate to oxlint", "switch from biome to oxc", "use oxfmt", or wants to adopt the oxc toolchain for linting and formatting.

dansnow Updated Sep 17, 2026

File contents

Biome to Oxc Migration

Migrate from Biome to oxlint (linting) + oxfmt (formatting) with Prettier for unsupported file types.

File Type Strategy

File Type	Lint	Format
`.ts`, `.tsx`, `.js`, `.jsx`	oxlint	oxfmt
`.json`, `.jsonc`, `.css`	-	oxfmt
`.md`, `.mdx`, `.astro`, `.yaml`, `.yml`	-	Prettier

Migration Checklist

Remove Biome packages - @biomejs/biome, ultracite, or similar presets
Add new packages - oxlint, oxfmt, prettier, framework-specific prettier plugins if needed
Delete biome.json or biome.jsonc
Create .oxlintrc.json
Create .prettierrc.json and .prettierignore
Update build scripts - Replace biome commands with oxlint/oxfmt/prettier
Update VSCode settings - Switch formatter to oxc.oxc-vscode
Run format and lint - Verify everything works

Configuration Templates

.oxlintrc.json

{
  "$schema": "./node_modules/oxlint/configuration_schema.json",
  "plugins": ["typescript", "import", "unicorn", "oxc", "jsdoc", "promise", "node"],
  "rules": {}
}

Available plugins: eslint, react, unicorn, typescript, oxc, import, jsdoc, jest, vitest, jsx-a11y, nextjs, react-perf, promise, node, vue

Enable plugins relevant to your project. For library projects, exclude framework-specific plugins (react, vue, nextjs, jest, vitest).

.prettierrc.json

{
  "printWidth": 120,
  "plugins": ["prettier-plugin-astro"]
}

Add plugins as needed: prettier-plugin-astro, prettier-plugin-svelte, prettier-plugin-tailwindcss

.prettierignore

dist/
node_modules/
**/*.ts
**/*.tsx
**/*.js
**/*.jsx
**/*.json
**/*.css

Exclude files handled by oxfmt.

VSCode Settings

{
  "editor.defaultFormatter": "esbenp.prettier-vscode",
  "[javascript][typescript][javascriptreact][typescriptreact][json][jsonc][css]": {
    "editor.defaultFormatter": "oxc.oxc-vscode"
  },
  "editor.codeActionsOnSave": {
    "source.fixAll.oxc": "always"
  }
}

Rule Migration

Common Biome to oxlint rule mappings:

Biome Rule	oxlint Equivalent
`noBarrelFile`	`no-barrel-file`
`useConsistentTypeDefinitions`	Not directly available
`noUnusedVariables`	`no-unused-vars`
`noConsole`	`no-console`

oxlint uses ESLint-compatible rule names with kebab-case.

CLI Commands

# Lint with auto-fix
oxlint --fix

# Format with oxfmt (use .gitignore for ignoring)
oxfmt --write --ignore-path=.gitignore .

# Format remaining files with Prettier
prettier --write --no-error-on-unmatched-pattern "**/*.{md,mdx,astro,yaml,yml}"

Note: oxfmt reads .prettierignore by default. Use --ignore-path=.gitignore to use gitignore instead.

---name: biome-to-oxcdescription: Migrate JavaScript/TypeScript projects from Biome to oxlint + oxfmt with Prettier fallback. Use when user asks to "migrate to oxlint", "switch from biome to oxc", "use oxfmt", or wants to adopt the oxc toolchain for linting and formatting.---# Biome to Oxc MigrationMigrate from Biome to oxlint (linting) + oxfmt (formatting) with Prettier for unsupported file types.## File Type Strategy| File Type | Lint | Format ||-----------|------|--------|| `.ts`, `.tsx`, `.js`, `.jsx` | oxlint | oxfmt || `.json`, `.jsonc`, `.css` | - | oxfmt || `.md`, `.mdx`, `.astro`, `.yaml`, `.yml` | - | Prettier |## Migration Checklist1. **Remove Biome packages** - `@biomejs/biome`, `ultracite`, or similar presets2. **Add new packages** - `oxlint`, `oxfmt`, `prettier`, framework-specific prettier plugins if needed3. **Delete** `biome.json` or `biome.jsonc`4. **Create `.oxlintrc.json`**5. **Create `.prettierrc.json`** and **`.prettierignore`**6. **Update build scripts** - Replace biome commands with oxlint/oxfmt/prettier7. **Update VSCode settings** - Switch formatter to `oxc.oxc-vscode`8. **Run format and lint** - Verify everything works## Configuration Templates### .oxlintrc.json```json{ "$schema": "./node_modules/oxlint/configuration_schema.json", "plugins": ["typescript", "import", "unicorn", "oxc", "jsdoc", "promise", "node"], "rules": {}}```Available plugins: `eslint`, `react`, `unicorn`, `typescript`, `oxc`, `import`, `jsdoc`, `jest`, `vitest`, `jsx-a11y`, `nextjs`, `react-perf`, `promise`, `node`, `vue`Enable plugins relevant to your project. For library projects, exclude framework-specific plugins (react, vue, nextjs, jest, vitest).### .prettierrc.json```json{ "printWidth": 120, "plugins": ["prettier-plugin-astro"]}```Add plugins as needed: `prettier-plugin-astro`, `prettier-plugin-svelte`, `prettier-plugin-tailwindcss`### .prettierignore```dist/node_modules/**/*.ts**/*.tsx**/*.js**/*.jsx**/*.json**/*.css```Exclude files handled by oxfmt.## VSCode Settings```json{ "editor.defaultFormatter": "esbenp.prettier-vscode", "[javascript][typescript][javascriptreact][typescriptreact][json][jsonc][css]": { "editor.defaultFormatter": "oxc.oxc-vscode" }, "editor.codeActionsOnSave": { "source.fixAll.oxc": "always" }}```## Rule MigrationCommon Biome to oxlint rule mappings:| Biome Rule | oxlint Equivalent ||------------|-------------------|| `noBarrelFile` | `no-barrel-file` || `useConsistentTypeDefinitions` | Not directly available || `noUnusedVariables` | `no-unused-vars` || `noConsole` | `no-console` |oxlint uses ESLint-compatible rule names with kebab-case.## CLI Commands```bash# Lint with auto-fixoxlint --fix# Format with oxfmt (use .gitignore for ignoring)oxfmt --write --ignore-path=.gitignore .# Format remaining files with Prettierprettier --write --no-error-on-unmatched-pattern "**/*.{md,mdx,astro,yaml,yml}"```Note: oxfmt reads `.prettierignore` by default. Use `--ignore-path=.gitignore` to use gitignore instead.

Frequently asked questions