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'use strict';
if(require('./$.descriptors')){
var $export = require('./$.export')
, $typed = require('./$.typed')
, buffer = require('./$.buffer')
, toIndex = require('./$.to-index')
, toLength = require('./$.to-length')
, isObject = require('./$.is-object')
, TYPED_ARRAY = require('./$.wks')('typed_array')
, $ArrayBuffer = buffer.ArrayBuffer
, $DataView = buffer.DataView
, $slice = $ArrayBuffer && $ArrayBuffer.prototype.slice
, VIEW = $typed.VIEW
, ARRAY_BUFFER = 'ArrayBuffer';
$export($export.G + $export.W + $export.F * !$typed.ABV, {ArrayBuffer: $ArrayBuffer});
$export($export.S + $export.F * !$typed.CONSTR, ARRAY_BUFFER, {
// 24.1.3.1 ArrayBuffer.isView(arg)
isView: function isView(it){ // not cross-realm
return isObject(it) && VIEW in it;
}
});
$export($export.P + $export.F * require('./$.fails')(function(){
return !new $ArrayBuffer(2).slice(1, undefined).byteLength;
}), ARRAY_BUFFER, {
// 24.1.4.3 ArrayBuffer.prototype.slice(start, end)
slice: function slice(start, end){
if($slice !== undefined && end === undefined)return $slice.call(this, start); // FF fix
var len = this.byteLength
, first = toIndex(start, len)
, final = toIndex(end === undefined ? len : end, len)
, result = new $ArrayBuffer(toLength(final - first))
, viewS = new $DataView(this)
, viewT = new $DataView(result)
, index = 0;
while(first < final){
viewT.setUint8(index++, viewS.getUint8(first++));
} return result;
}
});
}
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