Compile error, can't find custom module declaration in custom Typescript server

[Prottoy2938]

Issue

Describe the bug

I'm using custom-server-typescript example on one of my applications. On that application I was using youtube-captions-scraper library. Since this library doesn't have its own type module, vscode code editor was showing an error and the compiling was failing.

So I've declared own module type in the next-env.d.ts file. Now next-env.d.ts looks like this:

/// <reference types="next" />
/// <reference types="next/types/global" />

declare module "youtube-captions-scraper";

After this change, vscode code editor wasn't showing any error, but the compiling was still failing, saying the same error:

Could not find a declaration file for module 'youtube-captions-scraper'. 'E:/CODING/### Quary/quary-development/node_modules/youtube-captions-scraper/dist/index.js' implicitly has an 'any' type.
  Try `npm install @types/youtube-captions-scraper` if it exists or add a new declaration (.d.ts) file containing `declare module 'youtube-captions-scraper';`

Sample code repository here