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frontend/node_modules/object-is/test/shimmed.js

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+'use strict';
+
+require('../auto');
+
+var runTests = require('./tests');
+
+var test = require('tape');
+var defineProperties = require('define-properties');
+var callBind = require('call-bind');
+var isEnumerable = Object.prototype.propertyIsEnumerable;
+var functionsHaveNames = require('functions-have-names')();
+
+test('shimmed', function (t) {
+	t.equal(Object.is.length, 2, 'Object.is has a length of 2');
+	t.test('Function name', { skip: !functionsHaveNames }, function (st) {
+		st.equal(Object.is.name, 'is', 'Object.is has name "is"');
+		st.end();
+	});
+
+	t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) {
+		et.equal(false, isEnumerable.call(Object, 'is'), 'Object.is is not enumerable');
+		et.end();
+	});
+
+	runTests(callBind(Object.is, Object), t);
+
+	t.end();
+});