ESLint Plugin: No Deep Property Access

Overview

This ESLint plugin helps identify and address deep property accesses in JavaScript code. It highlights potentially problematic deep property accesses and suggests using optional chaining to improve code robustness.

Features

• Warning Messages: Emit warning messages for deep property accesses without optional chaining.
• Suggested Fixes: Provide suggestions for using optional chaining to safely access nested properties.
• Future Support: Planned support for error messages and automatic fixes.

Example

Consider the following JavaScript code snippet:

const user = {
    firstName: 'Tom',
    address: 'US'
};

console.log(user.firstName.toUpperCase()); // Warning: Consider using optional chaining instead of accessing properties with more than two dots.


Install the plugin using npm or yarn:

npm install eslint-plugin-no-deep-property-access --save-dev

yarn add eslint-plugin-no-deep-property-access --dev

Configure ESLint to use the plugin in your ESLint configuration file (e.g., .eslintrc.js):

```javascript
// .eslintrc.js
module.exports = {
  plugins: ["no-deep-property-access"],
  rules: {
    "no-deep-property-access/no-deep-property-access": "warn"
  }
};

Run ESLint in your project to lint your JavaScript files and identify deep property access issues:
or can also use .eslintrc.json file for the same


Example
Consider the following JavaScript code snippet:

javascript
Copy code
const user = {
    firstName: 'Tom',
    address: 'US'
};

console.log(user.firstName.toUpperCase()); // Warning: Consider using optional chaining instead of accessing properties with more than two dots.
In this example, the plugin would emit a warning message for the console.log statement, suggesting the use of optional chaining to safely access the firstName property of the user object.

with optional chain:
console.log(user?.firstName?.toUpperCase());
Contributing

License
This ESLint plugin is licensed under the MIT License.