Extensions

The extensions option enables specialized rule packs that are useful across many project types.

Extension	Enum	Use It When	Auto-Detected
RegExp	Extension.Regexp	The project wants stronger regular-expression linting.	No
Unicorn	Extension.Unicorn	The project wants modern JavaScript best-practice rules.	No
SonarJS	Extension.Sonarjs	The project wants maintainability-oriented rules.	No
Security	Extension.Security	The project wants additional security-oriented checks.	Yes
Perfectionist	Extension.Perfectionist	The project wants ordering and consistency rules.	No
BestPractices	Extension.BestPractices	The project wants light-weight quality rules with no extra dependencies.	No

Example

import { eslintConfig, Extension } from '@santi020k/eslint-config-basic'

export default eslintConfig({
  extensions: [Extension.Unicorn, Extension.Security, Extension.Perfectionist, Extension.BestPractices]
})

Details

BestPractices

The Extension.BestPractices pack adds four quality rules that don’t require any external plugin dependencies:

• no-console (warn) — catches leftover debug output
• no-alert (error) — disallows browser alert, confirm, and prompt
• complexity (warn, max 10) — flags overly complex functions
• max-depth (warn, max 4) — flags deeply nested blocks

Notes

• The Security extension is enabled by default through detection.
• These extensions can be layered with frameworks, formats, and tooling without changing the core composition model.

Repository Examples

• Extension Playgrounds: packages/playground/extensions
• Integrations Package Source: packages/integrations