Support for Enums and Namespace Types in Strip-Only Mode

[mertcanaltin]

Hello,

I encountered an issue while using the transformSync function where it appears that enums and namespace types are not supported in strip-only mode. Specifically, the function fails to strip type annotations from enums and namespaces, leading to errors in the transformation process

[marco-ippolito]

It is by design nodejs/loaders#217

[dionysiusmarquis]

I just want to leave a quck "workaround", at least for string enums

const Direction = {
  Up = "up",
  Down = "down",
  Left = "left",
  Right = "right",
} as const;
type Direction = (typeof Direction )[keyof typeof Direction ];

Important is as const. This way type Direction will be "up" | "down" | "left" | "right", wich should work pretty much (or maybe axacly?) like a string enum.

Here the same result with a custom helper type

type StringEnum<T extends Record<string, string>> = T[keyof T];
...
type Direction = StringEnum<typeof Direction>;
´´´