es.typed-array.iterator.js

'use strict';
var global = require('../internals/global');
var ArrayBufferViewCore = require('../internals/array-buffer-view-core');
var ArrayIterators = require('../modules/es.array.iterator');
var wellKnownSymbol = require('../internals/well-known-symbol');

var ITERATOR = wellKnownSymbol('iterator');
var Uint8Array = global.Uint8Array;
var arrayValues = ArrayIterators.values;
var arrayKeys = ArrayIterators.keys;
var arrayEntries = ArrayIterators.entries;
var aTypedArray = ArrayBufferViewCore.aTypedArray;
var exportProto = ArrayBufferViewCore.exportProto;
var nativeTypedArrayIterator = Uint8Array && Uint8Array.prototype[ITERATOR];

var CORRECT_ITER_NAME = !!nativeTypedArrayIterator
  && (nativeTypedArrayIterator.name == 'values' || nativeTypedArrayIterator.name == undefined);

var typedArrayValues = function values() {
  return arrayValues.call(aTypedArray(this));
};

// `%TypedArray%.prototype.entries` method
// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.entries
exportProto('entries', function entries() {
  return arrayEntries.call(aTypedArray(this));
});
// `%TypedArray%.prototype.keys` method
// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.keys
exportProto('keys', function keys() {
  return arrayKeys.call(aTypedArray(this));
});
// `%TypedArray%.prototype.values` method
// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.values
exportProto('values', typedArrayValues, !CORRECT_ITER_NAME);
// `%TypedArray%.prototype[@@iterator]` method
// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype-@@iterator
exportProto(ITERATOR, typedArrayValues, !CORRECT_ITER_NAME);