tsconfig.json

{
  "compilerOptions": {
    "outDir": "./dist/",
    "sourceMap": true,
    "noImplicitAny": true,
    "module": "es2015",
    "moduleResolution": "node",
    "target": "es5",
    "jsx": "react",
    "allowJs": true,
    "lib": ["es5", "es6", "dom", "es7", "esnext"],
    "strictNullChecks": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "allowSyntheticDefaultImports": true
  },
  "include": ["./src/**/*"]
}