Jul 20, 2019 · TypeScript cannot redefine == without breaking all JavaScript code that relies on its behavior (despite this having sad implications for 3). This also implies that TypeScript cannot …

Jan 17, 2017 · Yes. As of TypeScript 3.7 (released on November 5, 2019), this feature is supported and is called Optional Chaining: At its core, optional chaining lets us write code …

What is the TypeScript language? What can it do that JavaScript or available libraries cannot do, that would give me reason to consider it?

Feb 16, 2017 · But what the bang operator generally does is, it turns off errors of TypeScript code when compiling it to JavaScript code. It tells TypeScript to leave the expressions result as it is …

Learn how to dynamically assign properties to an object in TypeScript with this helpful guide.

Dec 19, 2025 · 2 replies 35 views TypeScript: How to strictly type a dynamic object keyed by enum values without using any? I’m working with TypeScript and trying to create a strongly …

export function foo(arg: string): arg is MyType { return ... } I haven't been able to search for is in either the docs or google, it's a pretty common word and shows up on basically every page. …

When creating or maintaining TypeScript definitions for pure JavaScript modules, interfaces should probably be used for everything that is a class in the original module; particularly …

Nov 5, 2015 · None of the other answers discuss how to run a TypeScript script that uses modules, and especially modern ES Modules. First off, ts-node doesn't work in that scenario, …

Feb 22, 2016 · 10 Type guards in typescript To determine the type of a variable after a conditional statement you can use type guards. A type guard in typescript is the following: An expression …