how to check if object is proxy or not?

[aelbore]

.

[dai-shi]

In general, I would suggest to avoid the need of checking if an object is a proxy at runtime. You can't call useSnapshot conditionally anyway.
If you need dynamic coding style, you want to have such a property on your end.

import { proxy } from 'valtio'

const IS_PROXY = Symbol()

const state = proxy({
  // ...
  [IS_PROXY]: true,
})

const isProxy = (obj) => obj[IS_PROXY] === true

---

For hacks and probably for 3rd-party libraries, this is possible:

import { getVersion } from 'valtio'

const isValtioProxy = (obj) => typeof getVersion(obj) === 'number'

[aelbore]

@dai-shi thank you appreciate it