# regenerator-runtime Standalone runtime for [Regenerator](https://github.com/facebook/regenerator)-compiled generator and `async` functions. To import the runtime as a module (recommended), either of the following import styles will work: ```js // CommonJS const regeneratorRuntime = require("regenerator-runtime"); // ECMAScript 2015 import regeneratorRuntime from "regenerator-runtime"; ``` To ensure that `regeneratorRuntime` is defined globally, either of the following styles will work: ```js // CommonJS require("regenerator-runtime/runtime"); // ECMAScript 2015 import "regenerator-runtime/runtime"; ``` To get the absolute file system path of `runtime.js`, evaluate the following expression: ```js require("regenerator-runtime/path").path ```