Step 3: File Storage Persisting Engine

3. File Storage Persisting Engine

Configure local file system readers to persist data.

Detailed Implementation Steps:

Write a storage module using filesystem APIs (such as Node fs/promises). Implement async read/write functions.

Save objects to a local database.json file. Ensure updates read from the file, merge mutations, and write back to the file.

Verification Checklist:

1. Verify that calling create routes writes new JSON structures to your local database file.