tsconfig.json

{
  "compilerOptions": {
    "outDir": "dist",
    "module": "esnext",
    "target": "es2020",
    "lib": ["dom", "dom.iterable", "esnext"],
    "sourceMap": true,
    "allowJs": true,
    "declaration": true,
    "moduleResolution": "node",
    "forceConsistentCasingInFileNames": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noImplicitAny": false,
    "strictNullChecks": false,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "allowSyntheticDefaultImports": true,
    "downlevelIteration": true,
    "skipLibCheck": true
  },
  "include": ["index.ts"],
  "exclude": ["node_modules", "build", "dist", "example", "rollup.config.js"]
}