It would make more sense to look for an example of a TMX loader that pulls maps into a 2D engine like pixi or phaser that use webGL.
I dont think three.js is suited to this kind of format.
There are two examples of TMX to Pixi:
and
Check out Pixi, if you haven’t already:
I can’t find any examples of loading tmx into phaser, but there’s a good article here that describes using tiled to create maps for phaser, as tiled exports to other formats than tmx:
And more info about phaser here: https://phaser.io/
Unless there’s a specific reason why you need this running in a fully 3d environment?
If you just need the GPU rendering power then use the right engine for the job.