tsconfig.json

{
  "compilerOptions": {
    // target Node v16 / ES2021
    "target": "es2021",
    "module": "commonjs",
    "moduleResolution": "node",
    "resolveJsonModule": true,

    // Interoperability with CommonJS modules
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,

    // Do not error out for errors in third-party modules
    "skipLibCheck": true,

    // Type-checking options
    "strict": true,
    "allowUnreachableCode": false,
    "allowUnusedLabels": false,
    "exactOptionalPropertyTypes": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,

    // inputs and outputs
    "declaration": true,
    "sourceMap": true,
    "rootDir": "src",
    "outDir": "lib"
  },
  "include": ["src/**/*.ts"]
}