Documentation - Creating Types from Types

TypeScript’s type system is very powerful because it allows expressing types in terms of other types. The simplest form of this idea is generics. Additionally, we have a wide variety of type operators available to use. It’s also possible to express types in terms of values that we already have. By combining various type operators, we can express complex operations and values in a succinct, maintai

[yasu-log]

【B!】公式のTypeScript: Handbookにも「we recommend using an interface over a type alias when possible」（可能な場合はtypeよりもinterfaceを使用することをお勧め）とある

[todesking]

Advanced Types · TypeScript

[efcl]

TypeScriptのnullable typeについての解説。 undefined | null ? ! non-nullableについて