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eslint-plugin-listeners

This project aims to provide formatting rules to prevent memory leaks around event listeners.

Requirements

• ESLint >= 8.57
• Node.js >= 20

Installation

$ yarn add --dev eslint eslint-plugin-listeners

If you installed ESLint globally (using -g) then install eslint-plugin-listeners globally too.

Usage

Flat config (eslint.config.js, ESLint 9+)

Use a shipped preset:

import listeners from 'eslint-plugin-listeners';

export default [
  ...listeners.configs['flat/recommended'],
];

Available presets: flat/recommended, flat/strict.

Or wire rules up manually:

import listeners from 'eslint-plugin-listeners';

export default [
  {
    plugins: { listeners },
    rules: {
      'listeners/no-missing-remove-event-listener': 'error',
      'listeners/matching-remove-event-listener': 'error',
      'listeners/no-inline-function-event-listener': 'error',
    },
  },
];

Legacy config (.eslintrc, ESLint 8)

Add listeners to the plugins section (the eslint-plugin- prefix is optional):

{
  "plugins": ["listeners"]
}

Then extend a shipped preset:

{
  "extends": ["plugin:listeners/recommended"]
}

Available presets: recommended, strict.

Or configure the rules directly:

{
  "rules": {
    "listeners/no-missing-remove-event-listener": "error",
    "listeners/matching-remove-event-listener": "error",
    "listeners/no-inline-function-event-listener": "error"
  }
}

Rule Documentation

• no-missing-remove-event-listener
• matching-remove-event-listener
• no-inline-function-event-listener