tsconfig.json

{
  "compilerOptions": {
    "target": "ES5" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
    "lib": [
      "ES6",
      "DOM",
      "ES2016",
      "ES2017"
    ] /* Specify a set of bundled library declaration files that describe the target runtime environment. */,
    "jsx": "react" /* Specify what JSX code is generated. */,
    "module": "esnext" /* Specify what module code is generated. */,
    "moduleResolution": "Node" /* Specify how TypeScript looks up a file from a given module specifier. */,
    "allowJs": false /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */,
    "declaration": true /* Generate .d.ts files from TypeScript and JavaScript files in your project. */,
    "sourceMap": true /* Create source map files for emitted JavaScript files. */,
    "outDir": "dist" /* Specify an output folder for all emitted files. */,
    "esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */,
    "forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,
    "strict": true /* Enable all strict type-checking options. */,
    "noImplicitAny": true /* Enable error reporting for expressions and declarations with an implied 'any' type. */,
    "suppressImplicitAnyIndexErrors": true,
    "strictNullChecks": true /* When type checking, take into account 'null' and 'undefined'. */,
    "noImplicitThis": true /* Enable error reporting when 'this' is given the type 'any'. */,
    "noUnusedLocals": true /* Enable error reporting when local variables aren't read. */,
    "noUnusedParameters": true /* Raise an error when a function parameter isn't read. */,
    "noImplicitReturns": true /* Enable error reporting for codepaths that do not explicitly return in a function. */,
    "skipLibCheck": true /* Skip type checking all .d.ts files. */
  },
  "files": ["types.d.ts"],
  "include": ["src"],
  "exclude": ["node_modules", "dist", "example", "rollup.config.js"]
}