2 var ArrayBufferViewCore = require('../internals/array-buffer-view-core');
3 var toLength = require('../internals/to-length');
4 var toAbsoluteIndex = require('../internals/to-absolute-index');
5 var typedArraySpeciesConstructor = require('../internals/typed-array-species-constructor');
7 var aTypedArray = ArrayBufferViewCore.aTypedArray;
8 var exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;
10 // `%TypedArray%.prototype.subarray` method
11 // https://tc39.es/ecma262/#sec-%typedarray%.prototype.subarray
12 exportTypedArrayMethod('subarray', function subarray(begin, end) {
13 var O = aTypedArray(this);
14 var length = O.length;
15 var beginIndex = toAbsoluteIndex(begin, length);
16 var C = typedArraySpeciesConstructor(O);
19 O.byteOffset + beginIndex * O.BYTES_PER_ELEMENT,
20 toLength((end === undefined ? length : toAbsoluteIndex(end, length)) - beginIndex)