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eslint-plugin-sonarjs

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eslint-plugin-sonarjs

SonarJS rules for ESLint

  • 2.0.4
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What is eslint-plugin-sonarjs?

eslint-plugin-sonarjs is an ESLint plugin that provides a set of rules inspired by SonarQube to detect bugs and suspicious patterns in JavaScript code. It aims to improve code quality by identifying potential issues early in the development process.

What are eslint-plugin-sonarjs's main functionalities?

Detecting Cognitive Complexity

This rule helps to keep functions simple and maintainable by enforcing a limit on their cognitive complexity. The code sample configures ESLint to throw an error if a function's cognitive complexity exceeds 15.

module.exports = {
  rules: {
    'sonarjs/cognitive-complexity': ['error', 15]
  }
};

Detecting Duplicated Code

This rule detects duplicated string literals in the code. The code sample configures ESLint to throw an error if a string literal is duplicated more than 3 times.

module.exports = {
  rules: {
    'sonarjs/no-duplicate-string': ['error', 3]
  }
};

Detecting Unused Function Parameters

This rule identifies function parameters that are declared but not used within the function body. The code sample configures ESLint to throw an error for any unused function parameters.

module.exports = {
  rules: {
    'sonarjs/no-unused-collection': 'error'
  }
};

Detecting Collapsible If Statements

This rule detects if statements that can be collapsed into a single statement. The code sample configures ESLint to throw an error for any collapsible if statements.

module.exports = {
  rules: {
    'sonarjs/no-collapsible-if': 'error'
  }
};

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Package last updated on 18 Oct 2024

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