Individual skill

js-google

JavaScript style and best practices based on Google's official JavaScript Style Guide. This skill should be used when writing, reviewing, or refactoring JavaScript code to ensure consistent style and prevent common bugs. Triggers on tasks involving JavaScript, ES6, modules, JSDoc, naming conventions, or code formatting.

skills/.experimental/js-google/SKILL.md

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Last checked: Nov 5, 2026

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Repository stars (not skill ratings): 222
Repository last updated: Aug 15, 2026
License: MIT

Observed agent integration: codex

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AGENTS.mddoc · 9,449 bytes
README.mddoc · 4,158 bytes
SKILL.mdcore · 7,993 bytes
assets/templates/_template.mddoc · 906 bytes
metadata.jsonasset · 791 bytes
references/_sections.mddoc · 1,816 bytes
references/control-comment-empty-catch.mddoc · 1,821 bytes
references/control-for-of-over-for-in.mddoc · 1,721 bytes
references/control-strict-equality.mddoc · 1,580 bytes
references/control-switch-default-last.mddoc · 1,756 bytes
references/control-throw-error-objects.mddoc · 1,810 bytes
references/data-array-literals-over-constructor.mddoc · 1,665 bytes
references/data-destructuring-for-multiple-values.mddoc · 1,846 bytes
references/data-no-mixing-quoted-unquoted-keys.mddoc · 1,585 bytes
references/data-object-literals-over-constructor.mddoc · 1,363 bytes
references/data-spread-over-concat-slice.mddoc · 1,613 bytes
references/data-trailing-commas.mddoc · 1,517 bytes
references/format-braces-required.mddoc · 1,541 bytes
references/format-column-limit.mddoc · 1,667 bytes
references/format-one-statement-per-line.mddoc · 1,483 bytes
references/format-single-quotes.mddoc · 1,482 bytes
references/format-two-space-indent.mddoc · 1,517 bytes
references/func-arrow-functions-for-nested.mddoc · 1,701 bytes
references/func-arrow-parentheses.mddoc · 1,628 bytes
references/func-default-parameters.mddoc · 1,801 bytes
references/func-rest-parameters-over-arguments.mddoc · 1,856 bytes
references/func-spread-over-apply.mddoc · 1,548 bytes
references/lang-const-over-let-over-var.mddoc · 1,377 bytes
references/lang-es6-classes-over-prototypes.mddoc · 1,817 bytes
references/lang-explicit-semicolons.mddoc · 1,383 bytes
references/lang-no-eval.mddoc · 1,631 bytes
references/lang-no-modify-builtins.mddoc · 1,620 bytes
references/lang-no-non-standard-features.mddoc · 1,562 bytes
references/lang-no-primitive-wrappers.mddoc · 1,718 bytes
references/lang-no-with-statement.mddoc · 1,473 bytes
references/module-avoid-circular-dependencies.mddoc · 1,647 bytes
references/module-file-extension-in-imports.mddoc · 1,317 bytes
references/module-named-exports-over-default.mddoc · 1,612 bytes
references/module-no-duplicate-imports.mddoc · 1,630 bytes
references/module-no-import-aliasing.mddoc · 1,460 bytes
references/module-source-file-structure.mddoc · 1,597 bytes
references/naming-constant-case-for-constants.mddoc · 1,669 bytes
references/naming-descriptive-over-brief.mddoc · 1,668 bytes
references/naming-file-naming-conventions.mddoc · 1,359 bytes
references/naming-lowercamelcase-for-methods.mddoc · 1,500 bytes
references/naming-no-dollar-prefix.mddoc · 1,588 bytes
references/naming-uppercamelcase-for-classes.mddoc · 1,390 bytes
references/type-cast-with-parentheses.mddoc · 1,640 bytes
references/type-enum-annotations.mddoc · 1,650 bytes
references/type-explicit-nullability.mddoc · 1,804 bytes
references/type-jsdoc-required-for-exports.mddoc · 1,830 bytes
references/type-template-parameters.mddoc · 1,655 bytes
references/type-typedef-for-complex-types.mddoc · 1,952 bytes

Read excerpt


# Google JavaScript Best Practices

Comprehensive JavaScript style and best practices guide based on Google's official JavaScript Style Guide, designed for AI agents and LLMs. Contains 47 rules across 8 categories, prioritized by impact to guide automated refactoring and code generation.

## When to Apply

Reference these guidelines when:
- Writing new JavaScript or ES6+ code
- Structuring modules and managing imports/exports
- Adding JSDoc type annotations and documentation
- Reviewing code for naming and style consistency
- Refactoring existing JavaScript code

## Rule Categories by Priority