How can I make a custom set of d.ts files for my project for an untyped npm module?

[avikalpa]

I need to customize an existing @types/three as per my needs. I cloned the entire @types/three in my src/typings and npm rm @types/three. tsconfig.json looks at both node_modules/@types and src/typings.

However, the declaration module does not resolve to 'three'.

Here is the typings/three/index.d.ts:

export * from "./three-core";

export * from "./three-canvasrenderer";
export * from "./three-colladaLoader";
export * from "./three-copyshader";
export * from "./three-css3drenderer";
export * from "./three-ctmloader";
export * from "./three-ddsloader";
export * from "./three-editorcontrols";
export * from "./three-effectcomposer";
export * from "./three-examples";
export * from "./three-fbxloader";
export * from "./three-FirstPersonControls";
export * from "./three-maskpass";
export * from "./three-mtlloader";
export * from "./three-objloader";
export * from "./three-octree";
export * from "./three-orbitcontrols";
export * from "./three-orthographictrackballcontrols";
export * from "./three-outlinepass";
export * from "./three-projector";
export * from "./three-renderpass";
export * from "./three-shaderpass";
export * from "./three-smaapass";
export * from "./three-trackballcontrols";
export * from "./three-transformcontrols";
export * from "./three-vrcontrols";
export * from "./three-vreffect";

// export * from "./three-gltfloader";

export declare module 'three';
// [ts] 'export' modifier cannot be applied to ambient modules and module augmentations since they are always visible.    
// AND
// [ts] Invalid module name in augmentation. Module 'three' resolves to an untyped module at '/Users/abc_user/Desktop/abc_project/node_modules/three/build/three.js', which cannot be augmented.

// export as namespace THREE;
// This has no errors but does not resolve to 'three, meaning when I import * as THREE from 'three', ts says no declaration file exists.

So the question is: How can I make a custom set of d.ts files for an untyped npm module?

[j-oliveras]

You can use path mapping. In your case, something like:

{
  "compilerOptions": {
    "baseUrl": ".", // This must be specified if "paths" is.
    "paths": {
      "three": ["src/typings/three"] // This mapping is relative to "baseUrl"
    }
  }
}

[avikalpa]

Thanks a lot.
Something similar to this solves the problem.

Adding the paths options solved it.

"paths": {
        "*": [
            "node_modules/*",
            "src/typings/*"
        ]
    }