TypeScript Weekly

Issue #170 — May 13, 2021

Announcing TypeScript 4.3 RC

The release candidate of TypeScript 4.3 is out and brings support for separate write types on properties, the override keyword, template string type improvements, and more.

Daniel Rosenwasser

TypeScript Function Syntaxes

An overview of the various syntaxes for function types in TypeScript, along with simple examples.

Kent C. Dodds

The Seven Sources of Unsoundness in TypeScript

An overview of various TypeScript patterns that can lead to unsound code where the static type of a symbol is not necessarily compatible with its runtime values.

Dan Vanderkam

TypeScript Enums I Want to Actually Use

An opinionated take on (constant) enums in TypeScript.

Robin Pokorny