tsconfig.json

{
  "compilerOptions": {
    "baseUrl": ".",
    "outDir": "./lib",
    "module": "commonjs",
    "target": "es5",
    "lib": [
      "es6",
      "dom"
    ],
    "rootDir": "src",
    "sourceMap": true,
    "jsx": "react",
    "skipLibCheck": true,
    "moduleResolution": "node",
    "forceConsistentCasingInFileNames": true,
    "noImplicitReturns": true,
    "noImplicitThis": false,
    "noImplicitAny": false,
    "importHelpers": true,
    "strictNullChecks": false,
    "noUnusedLocals": false,
    "allowSyntheticDefaultImports": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "suppressImplicitAnyIndexErrors": true,
    "downlevelIteration": true,
    "strict": true,
    "esModuleInterop": true,
    "declaration": true
  },
  "include": [
    "src/*"
  ],
  "exclude": [
    "lib",
    "node_modules",
    "scripts",
    "acceptance-tests",
    "webpack",
    "jest",
    "src/setupTests.ts"
  ],
  "target": "es5",
  "lib": [
    "dom",
    "dom.iterable",
    "esnext"
  ],
  "externals": {
    "react": "React",
    "react-dom": "ReactDOM"
  },
}