TypeScript 4.5 RC, Type or Treat Challenges

TypeScript Weekly

Issue #179 — November 4, 2021

Announcing TypeScript 4.5 RC

The release candidate of TypeScript 4.5 has been released. It implements the Awaited type which improves promise typing, introduces a way to override a specific built-in lib in a manner similar to how @types/ support works, and ships with many other improvements.

Daniel Rosenwasser

Type or Treat Challenges

The TypeScript team is posting code challenges every day that will allow you to dig deeper into the TypeScript language in a fun way.

Orta Therox

Use the Either Type to Make Your Code Predictable

The Either type is a data type that holds some value in a property called left or some value in a property called right, but never both at once, and never neither. How to define and use the Either type in TypeScript.

Anthony Manning-Franklin

Making Illegal States Unrepresentable in TypeScript

A talk about how to make illegal states unrepresentable in TypeScript, covering topics such as opaque types and type-level programming.

Юрий Богомолов

reduxjs/react-redux: v8.0.0-alpha.0

react-redux v8 has been rewritten in TypeScript, using the existing typings as a starting point.

Mark Erikson

Older messages

Sharing Types Between Repos, Index Signatures

Thursday, September 23, 2021

TypeScript Weekly Issue #178 — September 23, 2021 Sharing Types between Backend and Frontend Repos How to keep TypeScript types in sync between a backend and frontend project in different repos, using

TypeScript 4.4, In Defense of any

Thursday, September 16, 2021

TypeScript Weekly Issue #177 — September 16, 2021 Announcing TypeScript 4.4 TypeScript 4.4 has been released and brings control flow analysis of aliased conditions, a new flag for exact optional

TypeScript 4.4 RC, The First TypeScript Demo

Thursday, August 19, 2021

TypeScript Weekly Issue #176 — August 19, 2021 Announcing TypeScript 4.4 RC The release candidate of TypeScript 4.4 is out and brings control flow analysis of aliased conditions, a new flag for exact

Optional Chaining, Better Readability with TypeScript 4.4

Tuesday, August 3, 2021

TypeScript Weekly Issue #175 — August 3, 2021 Optional Chaining: The ?. Operator in TypeScript TypeScript 3.7 added support for the ?. operator, also known as the optional chaining operator. We can use

TypeScript 4.4 Beta, TypeScript and Native ESM in Node

Monday, July 19, 2021

TypeScript Weekly Issue #174 — July 19, 2021 Announcing TypeScript 4.4 Beta The beta of TypeScript 4.4 is out and brings control flow analysis of aliased conditions, a new flag for exact optional

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