tsconfig.json

{
	"compilerOptions": {
		"target": "ES2017",                       /* 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'. */
		"outDir": "./dist/",                     	/* Redirect output structure to the directory. */
		"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'. */
		"declaration": true,
		"declarationDir": "./dist/typings",
		"lib": ["es2017"],
		"resolveJsonModule": true,
		"types": ["@types/node"]
	},
	"include": [
		"./src/**/*"
	]
}