4Catalyzer ESLint Config

1.5.0 verified Sat Apr 25 auth: no javascript

A shared ESLint configuration used by 4Catalyzer projects. Version 1.5.0 provides a set of ESLint rules for consistent code style and quality. The package is actively maintained and serves as an internal standard, with peer dependency on eslint-plugin-import ^2.18.2. It is designed for use in JavaScript projects and relies on the Airbnb style guide as a base.

Common errors

error Failed to load plugin 'import' declared in '4catalyzer': Cannot find module 'eslint-plugin-import' ↓

cause Missing required peer dependency eslint-plugin-import.

fix

Run: npm install eslint-plugin-import --save-dev

error Configuration for rule 'no-console' is invalid: Severity should be one of the following: 0 = off, 1 = warn, 2 = error ↓

cause Possibly overriding a rule with incorrect severity value in user config.

fix

Check your .eslintrc and ensure rule severities are 0, 1, or 2.

error ESLint couldn't find the config '4catalyzer' to extend from. ↓

cause The package is not installed or misconfigured in extends field.

fix

Ensure eslint-config-4catalyzer is installed and extends uses '4catalyzer' (not full package name).

Warnings

breaking Major version bumps may include rule removals or additions that break existing code. ↓

fix Check changelog and update code to comply with new rules.

gotcha The config extends 'airbnb-base', so it inherits all Airbnb rules and might be strict. ↓

fix Override rules in your own ESLint config if needed.

gotcha Requires eslint-plugin-import as a peer dependency; missing it will cause errors. ↓

fix Install eslint-plugin-import as a dev dependency.

Install

npm install eslint-config-4catalyzer

yarn add eslint-config-4catalyzer

pnpm add eslint-config-4catalyzer

Imports

default
```
module.exports = {
  extends: '4catalyzer'
};
```
Used in .eslintrc.js or similar ESLint configuration files.
default
wrong
```
{
  "extends": "eslint-config-4catalyzer"
}
```
correct
```
{
  "extends": "4catalyzer"
}
```
In .eslintrc.json, the package name without 'eslint-config-' prefix is used.
default
```
// In package.json
"eslintConfig": {
  "extends": "4catalyzer"
}
```
Alternatively, specify in package.json under eslintConfig field.

Quickstart

Quick setup for using the 4Catalyzer ESLint config in a JavaScript project.

// Install dependencies
npm install eslint eslint-config-4catalyzer eslint-plugin-import --save-dev

// Create .eslintrc.js file
module.exports = {
  extends: '4catalyzer',
  rules: {
    // Custom rules can be added here
  }
};