Limit the exposure of Jest globals in TypeScript to specific files

After including @types/jest in my package.json file, TypeScript and VS Code now consider all .ts files to have additional global variables such as test, describe, expect, afterAll, afterEach, and beforeEach. Is there a way to specify that these globals should only apply to .jest.ts files or something similar?

Alternatively, is there a method to enforce importing these functions instead of allowing them to be used as global variables?

Answer №1

If you'd like, you have the option to manually import global settings by specifying importGlobals: false in the configuration file:

On the contrary, I personally find it more convenient to keep all test files within one directory. To achieve this, simply create a tsconfig.json file in the designated folder with the following content:

{
  "extends": "../../tsconfig.json",
  "compilerOptions": {
    "types": ["@types/jest"]
  },
}

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