Cannot access bookContent properties

i’m migrating an old Indesign script i created to process book documents before starting to work on them.
i’m trying to get a list of all documents in the book and open each one, process and save it.
i created a UXP plugin, but when i’m trying to access the bookContent properties like the filePath i’m getting back rejected promisses and not valid objects
i already tried adding full file system permissions with no luck.
i tried

await book.bookContents.firstItem().filePath

but i’m getting back some kind of Symbol()
without await i get a resolved Promise which the result is an “n”…

I see this is older, but I have the same issue. Not sure if you ever worked it out.

this line is the issue:

// Open the .indd file
const filePath = bookContent.filePath;

I see it’s a promise, but it’s not resolving, and so I’ve tried to resolve it, and this is what I found.

Promise Error: Error: Could not find an entry of ‘file:///Users/mlynch/Library/CloudStorage/GoogleDrive-me@here.com/.shortcut-targets-by-id/1IM2FTLoqXdBU1IuQ%20Adoption%20Source%20Files/_SP_20’

And that is not helping me much.

Hello Mike!
I’ll be brief, maybe you’ve already found a solution.

const bookDocuments = async (book) => {
let allPromisedFullNames = book.bookContents
	.everyItem().getElements()
	.map(e => e.fullName); // Array of Promises here
	
	/*
	let allPromisedFullNames = book.bookContents.everyItem().fullName;  //This returns not an Array, but collection. Be careful! 
	*/
	
	let fullNames = await Promise.all(allPromisedFullNames); // Now we have the Array of Files (not opened)
	return fullNames;
};

/////// call function to handle every document in the book
let files = await bookDocuments(app.books.item(0)); //select a book by item, by name...
files.forEach(indd => {
	let adoc = app.open(indd);
	//... handle ...
	adoc.close(SaveOptions.YES);  //or without saving, if you want
});