In addition to their very informative blogs, you can infer a lot based on their extensive Lua modding API: https://lua-api.factorio.com/latest/ https://lua-api

In addition to their very informative blogs, you can infer a lot based on their extensive Lua modding API: https://lua-api.factorio.com/latest/ https://lua-api.factorio.com/latest/ They also ship a full .pdb file with the Windows binaries (presumably for stack traces), so you can get a lot of information with dia2dump, or dig in with WinDbg.