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

```ts
type JsonValue =
  string | FiniteNumber | boolean | null | JsonArray | JsonObject;
```

Defined in: [packages/common/src/Type.ts:13659](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Type.ts#L13659)

An exact in-memory JSON data value.

Numbers are finite. Arrays and objects use Evolu Type's strict plain-data
representations, and the complete value graph is acyclic.