Solution

[Natalia-Onufrienko]

No description provided.

[mateacademy-ai-mentor]

Review Summary

I am approving your solution because it correctly implements all the required calculator behaviors: makeCalculator returns an object with result and the methods add, subtract, multiply, divide, operate, and reset, and result is initialized to 0. The operate method accepts a callback and a number, updates this.result based on the callback, and returns this, which satisfies the chaining and callback requirements without imposing any restrictions on which function can be passed. The arithmetic methods follow the expected (a, b) signature so they can be directly used as callbacks for operate, and reset correctly sets result back to 0 while also being chainable. Your naming and object method syntax align with the checklist (e.g., using method shorthand instead of methodName: function() {}), and there are no violations of the assignment pattern rules. Overall, the implementation is clean, functional, and meets the task and checklist requirements, so no changes are needed. Nice work on keeping the API intuitive and chain-friendly.

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