threw
toString() is caller code and may throw; a value that cannot render must not fail the eval that made it. Per ELEMENT so one bad entry costs its slot, not the line — Sink.render backstops what walking can't reach.
toString() is caller code and may throw; a value that cannot render must not fail the eval that made it. Per ELEMENT so one bad entry costs its slot, not the line — Sink.render backstops what walking can't reach.