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Editing: es.typed-array.subarray.js
'use strict'; var ArrayBufferViewCore = require('../internals/array-buffer-view-core'); var toLength = require('../internals/to-length'); var toAbsoluteIndex = require('../internals/to-absolute-index'); var typedArraySpeciesConstructor = require('../internals/typed-array-species-constructor'); var aTypedArray = ArrayBufferViewCore.aTypedArray; var exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod; // `%TypedArray%.prototype.subarray` method // https://tc39.es/ecma262/#sec-%typedarray%.prototype.subarray exportTypedArrayMethod('subarray', function subarray(begin, end) { var O = aTypedArray(this); var length = O.length; var beginIndex = toAbsoluteIndex(begin, length); var C = typedArraySpeciesConstructor(O); return new C( O.buffer, O.byteOffset + beginIndex * O.BYTES_PER_ELEMENT, toLength((end === undefined ? length : toAbsoluteIndex(end, length)) - beginIndex) ); });
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