Bug in `convert_mimetype_of_file_on_google_drive`: `ReferenceError: blob is not defined`

[zorrofox]

Hello,

There appears to be a bug in the convert_mimetype_of_file_on_google_drive tool function.

Error:
When calling the tool with a valid file ID for a Google Slides presentation and dstMimeType: 'application/pdf', it fails with the following error:
ReferenceError: blob is not defined at management_drive.js:267:128

Code Analysis:
The issue seems to be in the management_drive.js file within the convert_mimetype_of_file_on_google_drive function.

The current implementation appears to be:

const file = DriveApp.getFileById(id);
const blob = file.getAs(dstMimeType);
const newFile = DriveApp.createFile(blob.setName(file.getName()));

Suggested Fix:
A more robust implementation, which should prevent this error, is to explicitly get the file's blob before converting its type. The line should be changed as follows:

From:

const blob = file.getAs(dstMimeType);

To:

const blob = file.getBlob().getAs(dstMimeType);

This change ensures a valid blob is retrieved before the conversion is attempted and should resolve the issue.

Thank you for maintaining this useful toolset.

[zorrofox]

A pull request has been submitted to address this issue: #12

[tanaikech]

Thank you for your comment.

Unfortunately, I cannot find the following part from management_drive.js.

const file = DriveApp.getFileById(id);
const blob = file.getAs(dstMimeType);
const newFile = DriveApp.createFile(blob.setName(file.getName()));

Also, from your showing error message ReferenceError: blob is not defined at management_drive.js:267:128, I confirmed the reason for the error. It's as follows.

From

return `The mimeType of "${fileIds[i]}" was converted to "${dstMimeType}". The new file ID is "${DriveApp.createFile(blob).getId()}".`;

To

return `The mimeType of "${fileIds[i]}" was converted to "${dstMimeType}". The new file ID is "${DriveApp.createFile(e).getId()}".`;

I will modify it at the next official update soon. So, as the current update, I have modified it as the developer mode of the library.
Thank you for reporting it.