PR Checklist

• Addresses an existing open issue:fixesBug: [@typescript-eslint/no-unused-private-class-members] Private destructed class member is defined but used #11771
• That issue was marked asaccepting prs
• Steps inContributing were taken

Overview

Solution

This PR adds support for tracking destructured properties fromthis and counts them as member access at the point of destructuring.

Key insight: Destructuring fromthis is semantically equivalent to property access.

• const { a } = this is equivalent toconst a = this.a (readsthis.a)
• ({ a } = this) is equivalent toa = this.a (readsthis.a)

Implementation Details

Added a sharedhandleThisDestructuring method that:

1. DetectsObjectPattern destructuring fromthis
2. Directly callscountReference for each destructured property at the point of destructuring
3. Supports multiple destructuring contexts:
   • Variable declarations:const { a } = this
   • Assignment expressions:({ a } = this)
   • Function parameters:(param = { a } = this) => {}

Handles all destructuring patterns:

• ✅ Shorthand:const { a } = this
• ✅ Renamed:const { a: x } = this (still counts as accessingthis.a)
• ✅ Multiple properties:const { a, b } = this
• ✅ Static members:const { staticMember } = this in static methods

Test Coverage

Added comprehensive test cases:

• ✅ Multiple properties destructuring (IssueBug: [@typescript-eslint/no-unused-private-class-members] Private destructed class member is defined but used #11771 original case)
• ✅ Static member destructuring
• ✅ Assignment expression destructuring (({ property } = this))
• ✅ Renamed property destructuring (const { a: x } = this)
• ✅ Destructuring without using the variable