ADAM / AIAHTML5

'use strict';
var $export    = require('./_export')
  , html       = require('./_html')
  , cof        = require('./_cof')
  , toIndex    = require('./_to-index')
  , toLength   = require('./_to-length')
  , arraySlice = [].slice;

// fallback for not array-like ES3 strings and DOM objects
$export($export.P + $export.F * require('./_fails')(function(){
  if(html)arraySlice.call(html);
}), 'Array', {
  slice: function slice(begin, end){
    var len   = toLength(this.length)
      , klass = cof(this);
    end = end === undefined ? len : end;
    if(klass == 'Array')return arraySlice.call(this, begin, end);
    var start  = toIndex(begin, len)
      , upTo   = toIndex(end, len)
      , size   = toLength(upTo - start)
      , cloned = Array(size)
      , i      = 0;
    for(; i < size; i++)cloned[i] = klass == 'String'
      ? this.charAt(start + i)
      : this[start + i];
    return cloned;
  }
});