I made a program that converts .tmx map files to .json usable in the Lex Talionis game engine for Fire Emblem ROM hacks.
The program is written in TypeScript and can be run on any OS, instructions included. Here’s the code:
I used this program to convert many of the free to use maps in the main FE Repo, and gave the original authors credit.
Limitations
While this program converts most (41, to be exact) of the maps in the main FE repo, it does not work with all tilesets, nor any autotiles.