"use strict";
|
|
var value = require("../../object/valid-value")
|
, aFrom = require("../from")
|
, toArray = require("../to-array")
|
, contains = require("./contains")
|
, byLength = require("./_compare-by-length")
|
, filter = Array.prototype.filter
|
, push = Array.prototype.push;
|
|
module.exports = function (/* …lists*/) {
|
var lists, seen, result;
|
if (!arguments.length) return aFrom(this);
|
push.apply((lists = [this]), arguments);
|
lists.forEach(value);
|
seen = [];
|
result = [];
|
lists.sort(byLength).forEach(function (list) {
|
result = result
|
.filter(function (item) { return !contains.call(list, item); })
|
.concat(filter.call(list, function (item) { return !contains.call(seen, item); }));
|
push.apply(seen, toArray(list));
|
});
|
return result;
|
};
|
