30 lines
894 B
JavaScript
30 lines
894 B
JavaScript
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'use strict';
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var GetIntrinsic = require('get-intrinsic');
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var hasPropertyDescriptors = require('has-property-descriptors')();
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var $TypeError = require('es-errors/type');
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var $defineProperty = hasPropertyDescriptors && GetIntrinsic('%Object.defineProperty%', true);
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var iterProto = require('iterator.prototype');
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var callBound = require('call-bind/callBound');
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var $isPrototypeOf = callBound('Object.prototype.isPrototypeOf');
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var $Iterator = typeof Iterator === 'function' ? Iterator : function Iterator() {
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if (
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!(this instanceof Iterator)
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|| this.constructor === Iterator
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|| !$isPrototypeOf(Iterator, this.constructor)
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) {
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throw new $TypeError('`Iterator` can not be called or constructed directly');
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}
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};
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if ($Iterator.prototype !== iterProto) {
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$Iterator.prototype = iterProto;
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}
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$defineProperty($Iterator, 'prototype', { writable: false });
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module.exports = $Iterator;
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