Uncaught TypeError when finishing a level while playing with a Tile World tileset causes all rending to stop

[normanr]

When finishing a level _draw_visual_state¹ is asked to draw a state of exited.

• Tile World (static) tilesets don't have exited so (even though the code logs a warning) it proceeds to call draw_drawspec, which fails because it Cannot read properties of undefined (reading '__special__').
• Tile World (animated) tilesets have exited, but it's an alias to normal, which itself is an alias to moving. The code in _draw_visual_state only resolves aliases once, so a string is passed to draw_drawspec, and it calls _draw_standard which fails with Cannot read properties of undefined (reading '0').

Footnotes

1. https://github.com/eevee/lexys-labyrinth/blob/b4ebdf069d55817e7a983addcbda042b353b3bd0/js/tileset.js#L2457-L2470 ↩