[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Platform](https://evolu.dev/docs/api-reference/common/Platform) › isHermes

```ts
const isHermes: boolean;
```

Defined in: [packages/common/src/Platform.ts:8](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Platform.ts#L8)

Returns true if running in React Native with Hermes engine.