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rOACCT/node_modules/core-js/modules/esnext.async-iterator.drop.js
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esnext.async-iterator.drop.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;

			return new Promise(function (resolve, reject) {
			var doneAndReject = function (error) {
			state.done = true;
			reject(error);
			};

			var loop = function () {
			try {
			Promise.resolve(anObject(call(state.next, state.iterator))).then(function (step) {
			try {
			if (anObject(step).done) {
			state.done = true;
			resolve(createIterResultObject(undefined, true));
			} else if (state.remaining) {
			state.remaining--;
			loop();
			} else resolve(createIterResultObject(step.value, false));
			} catch (err) { doneAndReject(err); }
			}, doneAndReject);
			} catch (error) { doneAndReject(error); }
			};

			loop();
			});
			});

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