tsconfig.json

{
  "compilerOptions": {
    "target": "es2019",
    "module": "commonjs",
    "declaration": true,
    "declarationMap": true,
    "sourceMap": true,
    "outDir": "./dist",
    "rootDir": "./src",

    /* Strict Type-Checking Options */
    "strict": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "strictBindCallApply": true,
    "strictPropertyInitialization": true,
    "noImplicitThis": true,
    "alwaysStrict": true,

    /* Additional Checks */
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "esModuleInterop": true,

    /* Advanced Options */
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "resolveJsonModule": true,
    "types": ["./node_modules/jest-extended"]
  },
  "exclude": ["node_modules", "dist"],
  "include": ["src/**/*.ts", "src/**/*.json"],
  "files": ["src/swa.d.ts"]
}