tsconfig.json

{
  "compileOnSave": true,
  "compilerOptions": {
    "target":
      "es6" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */,
    "module":
      "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
    "jsx":
      "react" /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */,
    "sourceMap": true /* Generates corresponding '.map' file. */,
    "outDir": "./lib" /* Redirect output structure to the directory. */,
    "allowJs": true /* Allow javascript files to be compiled. */,
    "removeComments": true /* Do not emit comments to output. */,
    "preserveConstEnums": true,
    "typeRoots": ["./node_modules/@types"],
    "noUnusedLocals": true /* Report errors on unused locals. */,
    "noUnusedParameters": true /* Report errors on unused parameters. */,
    "allowSyntheticDefaultImports": true /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */,
    "strict": true /* Enable all strict type-checking options. */,
    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
    "skipLibCheck": true,
    "baseUrl": "./app",
    "paths": {
      "~/*": ["*"]
    }
  },
  "include": ["./app/"],
  "exclude": ["lib", "node_modules", "__tests__"]
}