How to exclude `node_modules/@types/**/node_modules`?

Question

I have run into a situation where a type definition in node_modules/@types is installing its own @types dependencies, and these \"nested\" @types conflict with

Answer 1

Use peerDependencies to ensure you only have one version of a dependency.

i.e. If I am using typings for angular and angular-mocks, angular-mocks will have its own @types/angular

@types/angular  // => 1.5.8
@types/angular-mocks // => 1.5.8
@types/angular-mocks/node_modules/@types/angular // => *

To prevent two version of @types/angular from being installed, declare @types/angular as a peerDependency in your package.json file.

Answer 2

A solution I found for this was to specify the node_modules/@types directory in the tsconfig.json paths setting.

Here's the snippet I changed in my tsconfig.json, which you should be able to adapt for your use case. I needed to modify my baseUrl and my paths settings.

   ...
    "baseUrl": ".",
    "paths": {
      "@/*": ["./src/*"],
      "*": ["./node_modules/@types/*"]
    }
   ...

In my case I'm using absolute urls in my TS project, so my local files are all relative to @/. I think if you are not using an absolute url like that, you should have something like the following for your config:

   ...
    "baseUrl": ".",
    "paths": {
      "*": ["./src/*", "./node_modules/@types/*"]
    }
   ...

Here's my complete tsconfig.json, which probably has a lot of irrelevant information, for reference.

{
  "compilerOptions": {
    "outDir": "./build/",
    "sourceMap": true,
    "allowJs": true,
    "checkJs": true,
    "jsx": "react",
    "target": "es2017",
    "module": "commonjs",
    "moduleResolution": "node",
    "allowSyntheticDefaultImports": true,
    "strict": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "removeComments": false,
    "preserveConstEnums": true,
    "skipLibCheck": true,
    "experimentalDecorators": true,
    "esModuleInterop": true,
    "baseUrl": ".",
    "paths": {
      "@/*": ["./src/*"],
      "*": ["./node_modules/@types/*"]
    }
  },
  "include": ["**/*", "*"],
  "exclude": ["build", "node_modules", "coverage"]
}