Check out the new Object.groupBy method in JavaScript! Previously, you might have had to use a cumbersome Reduce function to group arrays by a certain criterion.

But now, with Object.groupBy, it is much simpler. This method takes the array and a callback function as arguments, and that's it! You can even use destructuring to make the code more concise and change the callback to use Camel- Case key for the object is returned.

Do you want to group by a specific key, such as a language? No problem! And if performance is an issue, you can switch from Object to Map and use the get method to access the groups to access.

For more information, see: [Object.groupBy method](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/groupBy)

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