Certain byte are incorrectly replaced to EFBFBD when opening a local binary file in /drive (while /drive is referring to Local Files)

[tanaga9]

Description

Certain byte are incorrectly replaced to EFBFBD when opening a local binary file in /drive.
(while /drive is referring to Local Files)
(Found by chance in #48)

Reproduce

read a local binary file in /drive.

Expected behavior

do not replace

Context

• JupyterLite version: 0.1.0-beta.17
• jupyterlab-filesystem-access version: v0.5.3
• Browser and its version: Chrome 108.0.5359.124 (Official Build) (x86_64)

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Is it because the format of the binary file is text instead of base64 ?

We assume here image, audio and video mimetypes are all and only binary files we'll encounter

oops, i opened the zip file

[tanaga9]

I want to list "mimetypes" that should be treated as plain text

• in Python mimetypes module
• in Node file-type module