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🧠 [EXERCISE TITLE HERE]

A quick one-liner describing the problem.
Example: Check if two strings are anagrams.

✍️ Your Task

Your goal is to solve the coding challenge using a clear and efficient solution.

1. Read the problem and input/output requirements
2. Implement your solution in src/main.mjs
3. Run tests with npm run test to validate your solution

📘 Description

Describe the problem in detail.

Example:

Given two strings s1 and s2, return true if s2 is an anagram of s1, and false otherwise.

An anagram is a word or phrase formed by rearranging the letters of a different word.

📥 Input

• s1: a string (1 ≤ s1.length ≤ 10⁵)
• s2: a string (1 ≤ s2.length ≤ 10⁵)
• No spaces, only lowercase letters

📤 Output

• Returns true or false

🛠️ Instructions

1. Open the file src/main.mjs and implement the solution.
2. To verify your solution, run the tests in src/main.test.js using:

npm run test

✅ Do not modify the test file unless you’re adding extra edge cases.

💡 Tips

You can add any tips or hints that might help the user solve the problem.

For example:

• Use .toLowerCase() if needed
• Use objects, arrays or Map to count character frequencies
• Aim for O(n) time complexity if possible
• Compare frequency maps or use one-pass counter

🧪 Run Tests

This repo uses Vitest. To run tests locally:

npm install
npm run test

✅ Make sure your implementation is in src/main.mjs and your tests in src/main.test.js.

Happy coding! 🚀