tsconfig.json

{
  "compilerOptions": {
    "allowJs": true,
    "alwaysStrict": true,
    "baseUrl": ".",
    "declaration": true,
    "esModuleInterop": true,
    "inlineSourceMap": false,
    "inlineSources": false,
    "lib": ["es2020", "es2020.promise"],
    "module": "commonjs",
    "moduleResolution": "node",
    "noEmit": false,
    "noEmitOnError": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noUnusedLocals": false,
    "noUnusedParameters": true,
    "outDir": "dist",
    "paths": {},
    "resolveJsonModule": true,
    "sourceMap": false,
    "strict": true,
    "strictNullChecks": true,
    "strictPropertyInitialization": true,
    "target": "es2017"
  },
  "include": ["index.ts", "lib/**/*"]
}