I gave 0.2.0 a shot on react-basic/src/React/Basic.purs (0.8.0) and it no longer compiled. purty didn't emit any errors. Looks like it has something to do with record type syntax: { | state } became {state}
0.2.0
react-basic/src/React/Basic.purs
0.8.0
purty
{ | state }
{state}
Before:
After: