mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
28 lines
767 B
28 lines
767 B
10 years ago
|
'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 (x) {
|
||
|
|
return !contains.call(seen, x);
|
||
|
|
}));
|
||
|
|
push.apply(seen, toArray(list));
|
||
|
|
});
|
||
|
|
return result;
|
||
|
|
};
|