DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
The internal event emitter now catches errors from individual listeners and aggregates them using AggregateError, preventing a single failing listener from blocking other listeners.
Evidence
Signal error handling (search for "Signal listener(s) threw")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.