# Google Javascript Style > Applies Google JavaScript style for formatting, naming, and conventions. Use when writing or reviewing JavaScript, JS, .js files, ES modules, or Google JS style. - Skill: `peterish8/google-javascript-style` (Agent Skill) - Install (CLI): `npx skillmds@latest add peterish8/google-javascript-style` - Raw SKILL.md: https://api.skillmd.com/api/skills/peterish8/google-javascript-style/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: peterish8 (https://skillmd.com/u/peterish8) - Updated: 2026-09-21 - Page: https://skillmd.com/skills/peterish8/google-javascript-style --- # Google JavaScript Style (Quick Reference) Source: [https://google.github.io/styleguide/jsguide.html](https://google.github.io/styleguide/jsguide.html) ## When to load the detailed skill Read [google-javascript-style-detailed](../google-javascript-style-detailed/SKILL.md) when you need: - Section-by-section rules, examples, or edge cases - PR review with non-trivial style questions - Resolving conflicts between local habits and Google style The detailed skill is linked here so agents can load it automatically alongside this quick reference. ## Core rules - Use `const`/`let`, never `var`. Semicolons required. - 2-space indent, 80-column soft limit; wrap at 80 when readability improves. - camelCase for variables/functions; PascalCase for classes; `SCREAMING_SNAKE` for constants. - Use single quotes for strings unless escaping is worse. - JSDoc on all exported/public APIs with `@param`, `@return`, `@throws`. - Use ES modules (`import`/`export`); one class or primary symbol per file when practical. - Prefer `===`/`!==`; use `/** @type */` when Closure types are needed. - No `with`. Avoid `eval` and `new Function`. ## Quick checklist - Match Google JavaScript naming and formatting conventions - Keep code readable; prefer consistency within the file and package - Run language-appropriate linters/formatters when available - Document non-obvious behavior with brief, accurate comments - Defer to the official guide when this skill is silent ## Official guide