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Update upgrading.md #31173

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Expand Up @@ -10,6 +10,34 @@ description: Learn how to upgrade Next.js.

The minimum Node.js version has been bumped from 12.0.0 to 12.22.0 which is the first version of Node.js with native ES Modules support.

### Upgrade React version to latest

To upgrade you can run the following command:

```
npm install react@latest react-dom@latest
```

Or using `yarn`:

```
yarn add react@latest react-dom@latest
```

### Upgrade Next.js version to 12

To upgrade you can run the following command in the terminal:

```
npm install next@12
```

or

```
yarn add next@12
```

### SWC replacing Babel

Next.js now uses Rust-based compiler [SWC](https://swc.rs/) to compile JavaScript/TypeScript. This new compiler is up to 17x faster than Babel when compiling individual files and up to 5x faster Fast Refresh.
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