# 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.js"; | |
``` | |
To get the absolute file system path of `runtime.js`, evaluate the | |
following expression: | |
```js | |
require("regenerator-runtime/path").path | |
``` | |