EPubLoader

A method that loads the text file or blob and returns a promise that resolves to an array of Document instances. It reads the text from the file or blob using the readFile function from the node:fs/promises module or the text() method of the blob. It then parses the text using the parse() method and creates a Document instance for each parsed page. The metadata includes the source of the text (file path or blob) and, if there are multiple pages, the line number of each page.

A method that takes a raw buffer and metadata as parameters and returns a promise that resolves to an array of Document instances. It uses the extractRawText function from the mammoth module or extract method from the word-extractor module to extract the raw text content from the buffer. If the extracted text content is empty, it returns an empty array. Otherwise, it creates a new Document instance with the extracted text content and the provided metadata, and returns it as an array.