Function getSessionJSON

getSessionJSON<T>(key: string): T | null
Read a value from sessionStorage, parsing JSON when possible.

Usage:
```
import { setSessionJSON, getSessionJSON } from "mazey";

setSessionJSON("preferences", { theme: "dark" });
const preferences = getSessionJSON("preferences");
console.log(JSON.stringify(preferences));
```
Output:
```
{"theme":"dark"}
```
Type Parameters
- T
Parameters
- key: string
  Storage key.
Returns T | null
The parsed value, raw stored value, or null when no value exists.
- Defined in store.ts:55