There is a way to allow IntelliSense to work with union types like 'a' | 'b' | string – writing it like 'a' | 'b' | string & {} (or even using a helper type like type LiteralUnion<T extends U, U = string> = T | (U & {});)

but is it possible for

type LiteralNumbersUnion = 10 | 20 | 30 | 40 | 50 
type someProp = LiteralNumbersUnion | string

so that literal numbers would show up in Intellisense suggestions?

Here is an example of what I expect with literal string union and how it does not work with literal numbers union

Here’s a screenshot from TS Playground and another from VSCode, both with no autocomplete

LiteralNumbersUnion | string disables intellisense, string & {} clearly does not work because it solves a problem that does not exist (intersection between number and string types, at least as I understand it)

Actually, why don’t suggestions work here as is?