I love this mod but sadly it isnt out for 0.18 yet.

I would also like to see this updated when mod author has the time. One of my goto mods.

Edit: Think was able to get it working. In info.json, main directory of zip file, change 0.17 to 0.18 on two lines. Pasted new lines below. Save, rezip, and copy to mods folder. Mod zip file is LB-Modular-Chests_0.17.8.zip for the latest version

"factorio_version": "0.18",
"dependencies": ["base >= 0.18"],

Keep backup of original mod prior to modding it.

ANY way to get this official ?

Sorry this took so long to get done. I was so sure I tested it myself when this issue was first posted, and it just worked fine for me, so I didn't bother making an update. I must have been on the wrong version when testing, or a later patch than what I was testing on broke it or something, cause it definitely didn't work now, sorry about that.