tsconfig.json

{
  "compilerOptions": {
    "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
    "outDir": "lib",                        /* Redirect output structure to the directory. */
    "rootDir": "./",                          /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
    "noEmitOnError": true,                    /* Fail on error */
    // "lib": ["es6"],                           /* Specify library files to be included in the compilation. */
    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
    "sourceMap": true,                        /* For debugging */      
    // "allowJs": false,                          /* Allow javascript files to be compiled. */
    "strict": true,                           /* Enable all strict type-checking options. */
    "noImplicitAny": true,                    /* Raise error on expressions and declarations with an implied 'any' type. */
    "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    "resolveJsonModule": true,                /* Include modules imported with '.json' extension */
    "declaration": true,                      /* Create d.ts file */
    "forceConsistentCasingInFileNames": true  /* Disallow inconsistently-cased references to the same file. */
  },
  "exclude": ["node_modules", "lib", "jest*.js"]         /* Exclude files from compilation , "sample", "__unit__", "__integration__" */
}