swaf-boilerplate/tsconfig.test.json

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "typeRoots": [
      "node_modules/@types",
      "src/types",
      "test/types"
    ]
  },
  "include": [
    "src/types/**/*",
    "test/**/*"
  ]
}