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- '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 (a, b) {
- return filter.call(a, function (x) { return contains.call(b, x); });
- });
- };
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