in lib/src/iterable_matchers.dart [281:294]
Description describeTypedMismatch(Iterable item,
Description mismatchDescription, Map matchState, bool verbose) {
if (item.length != _expected.length) {
return mismatchDescription
.add('has length ${item.length} instead of ${_expected.length}');
} else {
return mismatchDescription
.add('has ')
.addDescriptionOf(matchState['actual'])
.add(' which is not $_description ')
.addDescriptionOf(matchState['expected'])
.add(' at index ${matchState["index"]}');
}
}