| "use strict"; |
| |
| var value = require("../../object/valid-value") |
| , contains = require("./contains") |
| , byLength = require("./_compare-by-length") |
| , filter = Array.prototype.filter |
| , push = Array.prototype.push |
| , slice = Array.prototype.slice; |
| |
| module.exports = function (/* …list*/) { |
| var lists; |
| if (!arguments.length) slice.call(this); |
| push.apply((lists = [this]), arguments); |
| lists.forEach(value); |
| lists.sort(byLength); |
| return lists.reduce(function (list1, list2) { |
| return filter.call(list1, function (item) { return contains.call(list2, item); }); |
| }); |
| }; |
