| Path : /var/www/html/infraai.ai/frontend/node_modules/core-js-pure/modules/ |
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| Current File : /var/www/html/infraai.ai/frontend/node_modules/core-js-pure/modules/es.iterator.concat.js |
'use strict';
var $ = require('../internals/export');
var call = require('../internals/function-call');
var aCallable = require('../internals/a-callable');
var anObject = require('../internals/an-object');
var getIteratorMethod = require('../internals/get-iterator-method');
var createIteratorProxy = require('../internals/iterator-create-proxy');
var IS_PURE = require('../internals/is-pure');
var $Array = Array;
var IteratorProxy = createIteratorProxy(function () {
while (true) {
var iterator = this.iterator;
if (!iterator) {
var iterableIndex = this.nextIterableIndex++;
var iterables = this.iterables;
if (iterableIndex >= iterables.length) {
this.done = true;
return;
}
var entry = iterables[iterableIndex];
this.iterables[iterableIndex] = null;
iterator = this.iterator = anObject(call(entry.method, entry.iterable));
this.next = iterator.next;
}
var result = anObject(call(this.next, iterator));
if (result.done) {
this.iterator = null;
this.next = null;
continue;
}
return result.value;
}
});
// `Iterator.concat` method
// https://tc39.es/ecma262/#sec-iterator.concat
$({ target: 'Iterator', stat: true, forced: IS_PURE }, {
concat: function concat() {
var length = arguments.length;
var iterables = $Array(length);
for (var index = 0; index < length; index++) {
var item = anObject(arguments[index]);
iterables[index] = {
iterable: item,
method: aCallable(getIteratorMethod(item))
};
}
return new IteratorProxy({
iterables: iterables,
nextIterableIndex: 0,
iterator: null,
next: null
});
}
});