tsconfig.json

{
  "compilerOptions": {
    "baseUrl": "./src/",
    "rootDir": "src",
    "downlevelIteration": true,
    "lib": ["dom", "dom.iterable", "esnext"],
    "module": "es6",
    "target": "es6",
    "esModuleInterop": true,
    "jsx": "preserve",
    "experimentalDecorators": true,
    "moduleResolution": "node",
    "forceConsistentCasingInFileNames": false,
    "noUnusedParameters": true,
    "noUnusedLocals": true,
    "suppressImplicitAnyIndexErrors": true,
    "skipLibCheck": true,
    "resolveJsonModule": true,
    "strict": true,
    "allowSyntheticDefaultImports": true,
    "emitDecoratorMetadata": true,
    "outDir": "./lib/esm",
    "declaration": true,
    "sourceMap": true
  },
  "exclude": [
    "lib",
    "src/**/*.js",
    "node_modules",
    "example",
    "jest",
    "src/setupTests.ts",
    "src/index.test.ts",
    "src/array/index.test.ts"
  ],
  "include": [
    "src"
  ]
}