tsconfig.json

{
  "compilerOptions": {
    "declarationDir": "dist/types",
    "outDir": "dist/lib",
    "baseUrl": "src",
    "rootDirs": ["src", "stories"],
    "module": "es2015",
    "target": "es5",
    "lib": ["dom", "dom.iterable", "esnext"],
    "sourceMap": true,
    "allowJs": false,
    "jsx": "react",
    "declaration": true,
    "moduleResolution": "node",
    "forceConsistentCasingInFileNames": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "suppressImplicitAnyIndexErrors": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "allowSyntheticDefaultImports": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true
  },
  "include": ["src", "stories"],
  "exclude": ["node_modules", "build", "dist", "example",
    "rollup.config.js"
  ]
}