--- /dev/null
+var rtrim = require('./rtrim');
+
+module.exports = function toSentence(array, separator, lastSeparator, serial) {
+ separator = separator || ', ';
+ lastSeparator = lastSeparator || ' and ';
+ var a = array.slice(),
+ lastMember = a.pop();
+
+ if (array.length > 2 && serial) lastSeparator = rtrim(separator) + lastSeparator;
+
+ return a.length ? a.join(separator) + lastSeparator + lastMember : lastMember;
+};