tsconfig.test.json

{
  "compilerOptions": {
    "target": "ES2018",
    "module": "CommonJS",
    "moduleResolution": "Node",
    "skipLibCheck": true,
    "resolveJsonModule": true,
    "strict": true,
    "strictBindCallApply": true,
    "strictFunctionTypes": true,
    "strictNullChecks": true,
    "strictPropertyInitialization": true,
    "alwaysStrict": true,
    "noImplicitAny": true,
    "noErrorTruncation": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "skipDefaultLibCheck": true,
    "esModuleInterop": true,
    "types": ["@types/node"],
    "incremental": true,
    "lib": ["ESNext"]
  },
  "include": ["./src/**/*"],
  "exclude": ["node_modules", "**/node_modules/*"]
}