Incorrect printing of literal types

[dgreensp]

Bit ints

This code:

export type Falsy = false | "" | 0 | 0n | null | undefined;

incorrectly prints as:

type Falsy = false | "" | 0 | 0 | null | undefined

A big int 0 should print (I think) as 0n. TypeScript distinguishes between the types 0 and 0n. 0 | 0 will simplify to 0, while 0 | 0n will not.

Strings

It seems that no escaping is performed on string literal types. This code:

export type Newline = "\n";

prints (in command-line text output) as:

type Newline = "
"