tsconfig.json

{
  "compilerOptions": {
    "module": "commonjs",
    "target": "es6",
    "outDir": "out",
    "useDefineForClassFields": true,
    "lib": ["ESNext"],
    "allowJs": false,
    "allowSyntheticDefaultImports": true,
    "resolveJsonModule": true,
    "sourceMap": true,
    "esModuleInterop": true,
    "rootDir": ".",
    /* Strict Type-Checking Option */
    "strict": true,
    /* enable all strict type-checking options */
    /* Additional Checks */
    "noUnusedLocals": true /* Report errors on unused locals. */,
    // "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
    // "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
    // "noUnusedParameters": true,  /* Report errors on unused parameters. */
    "skipLibCheck": true
  },
  "include": ["./src/**/*", "./test/**/*"],
  "exclude": ["node_modules", ".vscode-test"]
}