tsconfig.json option - compilerOptions

In a tsconfig.json, the types field of compilerOptions specifies a list of package names to be included in the global scope during compilation. Typically, packages in node_modules are automatically included via imports in your source code; but for convenience, TypeScript would also include all packages in node_modules/@types by default, so that you can get global declarations like process or the “fs” module from @types/node, or describe and it from @types/jest, without needing to import them directly.

  {
      "compilerOptions": {
          // Explicitly list the @types packages you need
         "types": ["node", "jest"]
      }
  }