Issue #142 — June 29, 2020
The beta of TypeScript 4.0 is out and brings some exciting new features, including variadic tuple types, labeled tuple elements, the new assignment operators &&=, ||=, and ??=, and more.
Sometimes, a type is too general to be useful. This article explains how type guards and assertion functions can be used to narrow a type to a more specific one in a certain region of a program.
Dr. Axel Rauschmayer
The fourth part in Jaime’s video series on TypeScript’s type system. This one is about mapped types, conditional types, and the infer keyword.
Jaime González García
How to type the Object.keys() method more accurately using a custom ObjectKeys<T> conditional type.
A programming environment for TypeScript built on top of Visual Studio Code. It combines a web framework with an editor into an integrated, batteries-included solution.
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