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rOACCT/node_modules/core-js/modules/esnext.async-iterator.take.js
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esnext.async-iterator.take.js
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			'use strict';
			var $ = require('../internals/export');
			var call = require('../internals/function-call');
			var anObject = require('../internals/an-object');
			var getIteratorDirect = require('../internals/get-iterator-direct');
			var notANaN = require('../internals/not-a-nan');
			var toPositiveInteger = require('../internals/to-positive-integer');
			var createAsyncIteratorProxy = require('../internals/async-iterator-create-proxy');
			var createIterResultObject = require('../internals/create-iter-result-object');

			var AsyncIteratorProxy = createAsyncIteratorProxy(function (Promise) {
			var state = this;
			var iterator = state.iterator;
			var returnMethod;

			if (!state.remaining--) {
			var resultDone = createIterResultObject(undefined, true);
			state.done = true;
			returnMethod = iterator['return'];
			if (returnMethod !== undefined) {
			return Promise.resolve(call(returnMethod, iterator, undefined)).then(function () {
			return resultDone;
			});
			}
			return resultDone;
			} return Promise.resolve(call(state.next, iterator)).then(function (step) {
			if (anObject(step).done) {
			state.done = true;
			return createIterResultObject(undefined, true);
			} return createIterResultObject(step.value, false);
			}).then(null, function (error) {
			state.done = true;
			throw error;
			});
			});

			// `AsyncIterator.prototype.take` method
			// https://github.com/tc39/proposal-iterator-helpers
			$({ target: 'AsyncIterator', proto: true, real: true }, {
			take: function take(limit) {
			return new AsyncIteratorProxy(getIteratorDirect(this), {
			remaining: toPositiveInteger(notANaN(+limit))
			});
			}
			});