I prefer this too, but sometimes poor type-narrowing support hinders it. For example, TypeScript only recently added support for aliased type-narrowing: https:

I prefer this too, but sometimes poor type-narrowing support hinders it. For example, TypeScript only recently added support for aliased type-narrowing: https://devblogs.microsoft.com/typescript/announcing-typescript-4-4/#cfa-aliased-conditions https://devblogs.microsoft.com/typescript/announcing-typescr...