Thanks @Trial-In-Error. This should do the trick. It now prints the following to the console if you don't give enough points to polyRoundExtrude.
ECHO: "There must be at least 3 radii points for polyRoundExtrude. [] is not long enough, you need 3 more point/s. Try:"
ECHO: "polyRoundExtrude([[11,0,1],[20,20,1.1],[8,7,0.5]],2,0.5,-0.8,fn=8);"
Thanks @Trial-In-Error. This should do the trick. It now prints the following to the console if you don't give enough points to polyRoundExtrude.
Resolves #26