---
url: /docs/guide/usage/linter/rules/unicorn/no-new-buffer.md
---

### What it does

Disallows the deprecated `new Buffer()` constructor.

### Why is this bad?

Enforces the use of [Buffer.from](https://nodejs.org/api/buffer.html#static-method-bufferfromarray) and [Buffer.alloc()](https://nodejs.org/api/buffer.html#static-method-bufferallocsize-fill-encoding) instead of [new Buffer()](https://nodejs.org/api/buffer.html#new-bufferarray), which has been deprecated since Node.js 4.

### Examples

Examples of **incorrect** code for this rule:

```javascript
const buffer = new Buffer(10);
```

Examples of **correct** code for this rule:

```javascript
const buffer = Buffer.alloc(10);
```

## How to use

## Version

This rule was added in v0.0.16.

## References