ES6 In Depth: Collections

Earlier this week, the ES6 specification, officially titled ECMA-262, 6th Edition, ECMAScript 2015 Language Specification, cleared the final hurdle and was approved as an Ecma standard. Congratulations to TC39 and everyone who contributed. ES6 is in the books! Even better news: it will not be six more years before the next update. The standard committee now aims to produce a new edition roughly every 12 months. Proposals for the 7th Edition are already in development. It is appropriate, then, to celebrate this occasion by talking about something I’ve been eager to see in JS for a long time—and which I think still has some room for future improvement!