In Webgl is there a way of “catching” errors in the same way as you might do this in a CPU focussed language?

I’m specifically having a problem where my whole browser is crashing our before i can get to the terminal so I cant even see the error (i already know what the cause is but it would be good to somehow catch it).

for example in javascript i might do a try{}catch(e){/*do something*/}

I have also tried if(gl_PointCoord.z){/*only perform code if z doesnt crash me out*/}
and trying to set a variable but in each case it just dimps a million errors into the console and my browser collapses.