require() is generated in JS although there's no runtime code

🔎 Search Terms

require generated const enum
namespace require generated
namespace require const enum
namespace require
"export import" require

⏯ Playground Link

Multiple files, so can't use playground

💻 Code

// file1.ts
export namespace MyOtherNamespace {
    export const enum Yay {
        OK,
        KO
    }
}

// file2.ts
import { MyOtherNamespace } from "./file1";
export namespace MyNamespace {
    export import NS2 = MyOtherNamespace;
}

import { MyNamespace } from "./file2.ts";

const val = MyNamespace.NS2.Yay.KO

// Compiled code
const file2_1 = require("./file2"); // notice the variable name which is just "filename_1", as it is not used anywhere
const val = 1;

🙁 Actual behavior

Compiling an unused const file2_1 = require("./file2"); line

🙂 Expected behavior

Do not compile unused line.

Additional information about the issue

The problem is that this file is a types file, so it is installed only in develpment environment (npm install -D xxx) so in runtime it is failing because it can't find the required module.

If I modify the MyNamespace namespace to directly export a namespace instead of doing an export import it works, but we have a lot of namespaces so we have them separated into files, and couldn't find another way to export an imported namespace inside another namespace.