tsconfig.test.json

{
  "compilerOptions": {
    "noEmit": true,
    "target": "esnext",
    "moduleResolution": "node",
    "strict": true,
    "lib": ["dom", "es2015", "dom.iterable"],
    "jsx": "preserve",
    "typeRoots": [
      "./node_modules/babel-plugin-jsx-dom-expressions/",
      "./node_modules/@types"
    ]
  },
  "exclude": ["node_modules"]
}