tsconfig.json

{
    "compilerOptions": {
      "target": "es5",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
      "module": "umd",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
      "allowJs": false,                       /* Allow javascript files to be compiled. */
      "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
      "declaration": true,                   /* Generates corresponding '.d.ts' file. */
      "sourceMap": true,                     /* Generates corresponding '.map' file. */
      "outDir": "./lib",                        /* Redirect output structure to the directory. */
      "removeComments": true,                /* Do not emit comments to output. */
  
      /* Strict Type-Checking Options */
      "strict": true,                           /* Enable all strict type-checking options. */
      "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
      "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
      "typeRoots": [
        "./typings",
      ],                       /* List of folders to include type definitions from. */
      "types": [
        "node", "jest", "ts-jest"
      ],                            /* Type declaration files to be included in compilation. */
      "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
      "allowUmdGlobalAccess": true,          /* Allow accessing UMD globals from modules. */
      "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
      "skipLibCheck": true,                     /* Skip type checking of declaration files. */
      "pretty": false,
    },
    "exclude": [
      "node_modules", "lib", "__tests__"
    ],
    "include": [
      "./src", "typings/**/*" ]
}