`IDBObjectStore` `keyPath` missing `null` type.

🔎 Search Terms

• IDBObjectStore
• IDBKeyPath
• keyPath

🕗 Version & Regression Information

• This is the behavior in every version I tried, and I reviewed the FAQ for entries about IDBObjectStore keyPath.

🙁 Actual behavior

IDBObjectStore instance member keyPath does not include null in its union of types.

🙂 Expected behavior

All versions of the IndexedDB specification has stated that keyPath will be the key path value provided at time of store creation, or null if not specified or when using a key generation such as autoIncrement. The type should be string | string[] | null.

Additional information about the issue

• IndexedDB v1 specification for keyPath
• IndexedDB v2 specification for keyPath
• IndexedDB v3 specification for keyPath