All white no question.

Mirrors to reflect the light, visually enlarge the small space and help you see yourself.

Here is sample narrow hall with closets on both sides:
Doors for each closet have one glass and one frosted glass panel.
The other photo of doors with both frosted glass panels.
To my taste: one side with glass and one side with mirror. I don’t like those aluminum stripes on ikea mirror doors, so if to choose from ikea doors only I choose both frosted.

If it was only one side mirror is nice but both side will be crazy...they will just reflect each other not a great look....White will make a calm a clean and look more like a hallway...just make sure you have great lighting in that area..

I am assuming one mirror is on the closet side and the other on the bath side....not opposite each other. Even if they are opposite each other they can be useful to see how you look in the back. These are very small spaces.

thanks everyone on their opinions. I just realized if I did mirrors on opposite sides of each other. Wouldn't it be a infinite numbers of reflections?

Exactly my point....it will make you crazy..you want your eye to just go straight through..did you measure to be sure You have plenty of room to open the doors....

I was thinking about doing sliding doors only.

Should i got for the white glass , frosted glass, orhigh gloss white?

White glass.....