Async loading of chunks

I have a package that handle operations (getting blocks, setting blocks, loading from files, saving from files) on a minecraft world.
It is designed to be async to handle easily IO backends.
It's currently only used on a minecraft server but it works fairly well so I'm investigating ways to visualize World instance with voxeljs.
The most used interface to get blocks in voxel seems to be the generate(x,y,z) function but that is completely sync hence I can't use it.
I found in a few modules the use of generateVoxelChunk and emitting "missingChunk" event to handle async chunk loading, but that seems a bit hacky and it's a bit hard to make it work, because I can't find any documentation on generateVoxelChunk.

Does anyone have a clue what would be the best way to render the chunk asyncly ?

prismarine-world provide a getColumn async function, and it should be called when voxeljs decide it's time to render such and such chunks.

I'll keep testing things but I'd appreciate any info about this !

Start by reading the voxel engine's generate(x,y,z) and generateVoxelChunk paths, then compare them with the async getColumn interface in prismarine-world and the missingChunk handling shown in app.js. The issue needs a design decision for async chunk rendering; done would require an agreed API and a documented, tested integration path.