How do I pass on "internal" errors to the user?

joshtargo

For example, if they try something and it says this in the console, can I capture that error and post it as a reportFeatureWarning?

Also, the documentation is pretty bad for try/throw/catch (for a non programmer). what is the "e" catch (e)? What does throwing "e" do?

MBartlett21

e is a variable that holds whatever was thrown.

Generally with throw regenError or similar, it is a map value with a message and some errorEntities.

I've often used this in something like the below to make sure that errors come through to the user:

try {
   [...]
} catch (err) {
   if (err is map)
      throw err; // it will already present nicely
   else
      throw regenError(toString(err));
}