function (entry) { return [
'\t' + 'at ' + entry.calleeShort.first (30),
_.nonempty ([entry.fileShort, ':', entry.line]).join (''),
(entry.source || '').first (80)] })).join ('\n') }
location: function (where) {
return _.quoteWith ('()', _.nonempty ([where.calleeShort, where.fileName + ':' + where.line]).join (' @ ')) },