Every article tagged ES2025, in one place.
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JavaScript gets a new edition every year. If you learned it a while ago, these additions will make your code shorter and safer. Safer property access const city = user?.address?.city; // undefined instead of a crash const limit = options.limit ?? 20; // only f...
JavaScript has had Set since ES2015, but combining sets meant converting to arrays and filtering. ES2025 added the classic set operations as methods. The operations const frontend = new Set(['asha', 'ravi', 'meera']); const oncall = new Set(['ravi', 'kiran']);...
Array methods create a whole new array at each step. Iterator helpers work on iterators instead and are lazy : values are processed one at a time, only as many as you need. The methods iterator.map(fn) iterator.filter(fn) iterator.take(n) iterator.drop(n) iter...
