Error when persisting the value 'undefined': JSON.parse throws an exception

[pistillo]

When the value 'undefined' is persisted accidentally in storage, attempting to retrieve and parse it using JSON.parse throws an exception. This happens because JSON.parse('undefined') is not valid JSON, resulting in a runtime error.

storage-utils.ts

// Example retrieval code
const item = localStorage.getItem('key');
return item ? JSON.parse(item) : null; // JSON.parse(item) fails if item is 'undefined'

A potential fix could include checking explicitly for 'undefined' as a string, to avoid parsing errors:

return item && item !== 'undefined' ? JSON.parse(item) : null;