Group data by keys using JavaScript Array Grouping (Object.groupBy)

Find Items from the end of the JavaScript Array using at, findLast and findLastIndex

Perform Set Operations using JavaScript Set Methods

Make JavaScript computations lazy using Iterator Helpers

Simplify array immutable changes with the new array.with method

Simplify JavaScript code with Logical, Assignment and Optional Operators

Manually settle a promise using Promise.withResolvers

Manage Asynchronous JavaScript code with any, allSettled new Promise Methods

Make JavaScript Numbers more readable using Numeric Separators

Improve Application-wide Error Handling rethrowing JavaScript Error with the Error Cause

Learn the Latest ECMAScript Features (ES2024, ES2023, ...)

[Array Grouping](https://github.com/tc39/proposal-array-grouping) is the new feature of JavaScript/ECMAScript, which splits an array (or, generally, an iterable), into smaller sub-arrays. Grouping is different than other JS array methods - it's *not* a part of the array prototype, but a static method.

Group data by keys using JavaScript Array Grouping (Object.groupBy)

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Learn the Latest ECMAScript Features (ES2024, ES2023, ...)