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When callingp.then(onFulfilled),onFulfilledis called asynchronously, even ifpis already fulfilled: This post’s description of promises leaves out the possibility of failure. Promises do not always get resolved to a value; sometimes they are “rejected” with an error. I’ll describe this in a...
The first time I heard about promises in JavaScript, Node was brand new and the community was discussing the best way to handle asynchronous behavior. The community experimented with promises for a while, but eventually settled on the Node-standard error-first callbacks. Around the same time, Do...
This snippet of code from the azure functions internals that run your code may be helpful in understanding what our expectations around promises are. If a Promise is returned (an Object with a .then method... note that whatever is returned from async is implicitly a Promise), then we await...
Latest upgrade to Microsoft’s strongly typed JavaScript, rebuilt to use ECMAScript modules, promises to be smaller, faster, and simpler.
WebAssembly is a binary instruction format and virtual machine that brings near-native performance to web browser applications, and allows developers to build high-speed web apps in the language of their choice.
What Is Node.js and Why You Should Use It Node.js is a highly-scalable event-driven JavaScript environment. In this article, learn more about Node.js, its architecture, how to use it, and m… Reading time 14 min read Updated date ...
By this point in time, just about every JavaScript developer and their grandma has heard about Promises. If you haven't, then you're about to. The idea for promises is laid out in the Promises/A spec by the folks in the CommonJS group. Promises are generally used as a means for ...
What's New in 4.10 New features of the 4.10 Node.js driver release include: Callback Deprecation Callbacks are now deprecated in favor of Promises. Callbacks will be removed in the next major release. The Node driver team recommends migrating to promises where possible: ...
See Improved UX Around Promises Better Unicode Support for Identifiers See Better Unicode Support for Identifiers import.meta Support in SystemJS See import.meta Support in SystemJS get and set Accessors Are Allowed in Ambient Contexts See get and set Accessors Are Allowed in Ambient Contexts Ambient...