tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "lib": ["dom", "es2015"],
    "strict": true,                         /* Enable all strict type-checking options. */
    "alwaysStrict": true,                   /* Parse in strict mode and emit "use strict" for each source file. */
    "module": "commonjs",                   /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
    "esModuleInterop": true,                /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    "moduleResolution": "node",             /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
    "allowSyntheticDefaultImports": true,   /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
    "jsx": "react",
    "declaration": true,                    /* Generates corresponding '.d.ts' file. */
    "outDir": "./dist",
    "removeComments": true,
    "sourceMap": true,                      /* Generates corresponding '.map' file. */
  },
  "include": ["src/**/*"],
  "exclude": ["node_modules", "src/index.tsx", "src/App.tsx"]
}