1
0
mirror of https://github.com/musix-org/musix-oss synced 2024-12-23 22:33:17 +00:00
musix-oss/node_modules/core-js/modules/es.string.iterator.js

30 lines
1.0 KiB
JavaScript
Raw Normal View History

2020-03-03 20:30:50 +00:00
'use strict';
var charAt = require('../internals/string-multibyte').charAt;
var InternalStateModule = require('../internals/internal-state');
var defineIterator = require('../internals/define-iterator');
var STRING_ITERATOR = 'String Iterator';
var setInternalState = InternalStateModule.set;
var getInternalState = InternalStateModule.getterFor(STRING_ITERATOR);
// `String.prototype[@@iterator]` method
// https://tc39.github.io/ecma262/#sec-string.prototype-@@iterator
defineIterator(String, 'String', function (iterated) {
setInternalState(this, {
type: STRING_ITERATOR,
string: String(iterated),
index: 0
});
// `%StringIteratorPrototype%.next` method
// https://tc39.github.io/ecma262/#sec-%stringiteratorprototype%.next
}, function next() {
var state = getInternalState(this);
var string = state.string;
var index = state.index;
var point;
if (index >= string.length) return { value: undefined, done: true };
point = charAt(string, index);
state.index += point.length;
return { value: point, done: false };
});