🐛 Imports in `declare module` are not detected (TypeScript)

[fregante]

No repro

Prerequisites

• [x] I'm using the latest version
• [x] I've read the relevant documentation
• [x] I've searched for existing issues
• [x] I've checked the list of known issues
• [x] I've read the issue reproduction guide

Reproduction url

Stub issue, I can create a repro if required

Reproduction access

• [x] I've made sure the reproduction is publicly accessible

Description of the issue

npm install react-select react-select-virtualized

I have this in my globals.d.ts file and knip is missing the usage of "react-select":

// Package has no types: https://github.com/guiyep/react-select-virtualized/issues/293
declare module "react-select-virtualized" {
  export { default } from "react-select";
  // https://deluxe-blancmange-4a5494.netlify.app/#/?id=usage-with-creatable
  export { Creatable } from "react-select/creatable";
}

I can confirm that:

• Changing exports x from to import "react-select" doesn't change the result
• Adding import "react-select" outside declare module does fix it, but that changes how TypeScript interprets the file

[fregante]

Here's a smaller repro that doesn't make use of @types packages, to avoid confusion:

Download

repro.zip

Code

// global.d.ts
declare module "my-lil-error-checker" {
    export { isErrorLike } from "serialize-error";
}

Output:

Unused dependencies (1)
serialize-error  package.json:4:6
Unlisted dependencies (1)
my-lil-error-checker  index.ts

• Unlisted dependencies is expected, it doesn't exist.
• Unused dependencies is the bug/feature request

Like in the original post, adding import "serialize-error" at the top of global.d.ts recognizes the usage of the dependency.

[webpro]

Closing this issue as part of a general cleanup to keep this project sustainable and optimize my time working on it. If you think this is inappropriate or if there is no workaround and you feel stuck, feel free to open a new issue. Thanks for your understanding.