12345678910111213141516171819202122232425262728293031323334353637383940
---title: 'derive'section: 'Utils'description: ''---
# derive
#### `derive` util
You can subscribe to some proxies and create a derived proxy.
```jsimport { derive } from 'valtio/utils'
// create a base proxyconst state = proxy({  count: 1,})
// create a derived proxyconst derived = derive({  doubled: (get) => get(state).count * 2,})
// alternatively, attach derived properties to an existing proxyderive(  {    tripled: (get) => get(state).count * 3,  },  {    proxy: state,  })```
#### `underive` util
TODO