feat(eslint-plugin): add `no-object-methods-on-collections` rule

[stepankuzmin]

Adds a new ESLint rule no-object-methods-on-collections that prevents using Object methods on Map, Set, WeakMap, and WeakSet instances.

Based on https://github.com/typescript-eslint/typescript-eslint/pull/10104 and https://github.com/typescript-eslint/typescript-eslint/pull/9369

Examples

❌ Incorrect

const map = new Map();
Object.keys(map); // Returns empty array

✅ Correct

const map = new Map();
Array.from(map.keys()); // Correct way to get keys

[typescript-eslint[bot]]

Thanks for the PR, @stepankuzmin!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

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☁️ Nx Cloud last updated this comment at 2025-10-24 15:12:30 UTC

[JoshuaKGoldberg]

👋 @stepankuzmin are you waiting on us for anything with this PR? Is it ready for review?