Class: ReadonlyAttachment

A readonly alternative to Attachment, which can be used for fetching already-uploaded Attachments.

Constructors

• new ReadonlyAttachment(reference, state?): ReadonlyAttachment

Construct a ReadonlyAttachment.

Name	Type	Description
`reference`	`Object`	The `AttachmentReference` that should be read by the `ReadonlyAttachment` object.
`reference.content_type`	`string`	-
`reference.filename`	`string`	-
`reference.key`	`string`	-
`reference.type`	`"braintrust_attachment"`	-
`state?`	`BraintrustState`	(Optional) For internal use.

The new ReadonlyAttachment object.

▸ data(): Promise<Blob>

The attachment contents. This is a lazy value that will read the attachment contents from the object store on first access.

Promise<Blob>

▸ status(): Promise<{ error_message?: string ; upload_status: "error" | "done" | "uploading" }>

Fetch the attachment upload status. This will re-fetch the status each time in case it changes over time.

Promise<{ error_message?: string ; upload_status: "error" | "done" | "uploading" }>

• Readonly reference: Object

Attachment metadata.