Create the NotFoundError

Overview of the Feature Request

For now any error returned by the API in a read operation returns a ReadError, which includes the message with the HTTP error code as a very simple string, but we can define a new NotFoundError that extends ReadError also including more refined data. This way we can safely identify a not found error within the block catch of the promise, and carry out the necessary actions in the SPA.

What Inspired the Request?

• https://github.com/IQSS/dataverse-frontend/pull/352#discussion_r1549779417

What Existing Behavior Do You Want Changed?

Error handling

Any Brand New Behavior Do You Want to Add to js-dataverse?

New not found error

Any Open or Closed Issues Related to This Feature Request?

No

まず、js-dataverse における既存の ReadError の実装と、読み取り操作のエラー処理を追跡します。API の not-found レスポンスがどこでエラーに変換され、そこでどのような詳細化されたデータが利用できるのかを特定します。既存の ReadError の動作を維持したまま、promise の catch で個別の NotFoundError を識別できれば完了です。