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iterator.prototype
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test
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index.js
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/home/techb158/balavpn.abdallabala.com/node_modules/iterator.prototype/test/index.js
(1400B)
'use strict'; var test = require('tape'); var hasSymbols = require('has-symbols')(); var getProto = require('get-proto'); var iterProto = require('../'); test('Iterator.prototype', function (t) { t.ok(iterProto, 'is truthy'); t.equal(typeof iterProto, 'object', 'is an object'); t.notEqual(iterProto, Object.prototype, 'is not Object.prototype'); t.test('Symbol.iterator', { skip: !hasSymbols }, function (st) { var fn = iterProto[Symbol.iterator]; st.equal(typeof fn, 'function', 'Symbol.iterator is a function'); var sentinel = {}; st.equal( fn.call(sentinel), sentinel, 'Symbol.iterator returns receiver' ); st.end(); }); t.test('Array keys', { skip: typeof [].keys !== 'function' }, function (st) { var grandProto = getProto(getProto([].keys())); st.equal( grandProto, iterProto, 'ArrayIterator [[Prototype]] is Iterator.prototype', { skip: grandProto === Object.prototype && 'this environment lacks Iterator.prototype' } ); st.end(); }); t.test('Set keys', { skip: typeof Set !== 'function' || typeof Set.prototype.keys !== 'function' }, function (st) { var grandProto = getProto(getProto(new Set().keys())); st.equal( grandProto, iterProto, 'SetIterator [[Prototype]] is Iterator.prototype', { skip: grandProto === Object.prototype && 'this environment lacks Iterator.prototype' } ); st.end(); }); t.end(); });
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