---
title: isNode
tags: node,browser,intermediate
firstSeen: 2020-10-12T20:01:21+03:00
lastUpdated: 2021-04-02T11:45:13+03:00
---

Determines if the current runtime environment is Node.js.

- Use the `process` global object that provides information about the current Node.js process.
- Check if `process`, `process.versions` and `process.versions.node` are defined.

```js
const isNode = () =>
  typeof process !== 'undefined' &&
  !!process.versions &&
  !!process.versions.node;
```

```js
isNode(); // true (Node)
isNode(); // false (browser)
```