The fulfillment value is an Array with one object per input Promise – either one of: It returns a Promise that is fulfilled once all the input Promises are settled. Promise.allSettled() receives an iterable of Promises. (): This method throws if flag /g isn’t set and returns an iterable with all match objects for a given string. It supports integer numbers that can be arbitrarily large (storage for them grows as necessary). Previously the Logical Or operator ( ||) was used in this case but it has downsides here because it returns the default value whenever the left-hand side is falsy (which isn’t always correct).īigints – arbitrary-precision integers: Bigints are a new primitive type. This operator lets us use a default value whenever something is missing. This expression is defaultValue if value is either undefined or null and value otherwise. Private slot checks (“ergonomic brand checks for private fields”): The following expression checks if obj has a private slot #privateSlot: Private methods and accessors ( non-static and static).Private fields ( instance private fields and static private fields).Private slots are new and can be created via:.Properties (public slots) can now be created via:.The following proposals have reached stage 4 and are scheduled to be part of that standard: 4.1 New in ECMAScript 2022ĮS2022 will probably become a standard in June 2022. It starts after ES2015 (ES6) because that release has too many features to list here. This chapter lists what’s new in ES2016–ES2022 in reverse chronological order.
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