var testCase = function (actual, expected, message) { if (actual !== expected) { throw message + ". Expected '" + expected + "', but was '" + actual + "'"; } }; var obj = { name:'obj', internalObject: { name :'internalObject', method: function () { return (value) => this.name + "-name-" + value; } } }; noInline(obj.internalObject.method); for (var i=0; i<10000; i++) { testCase(obj.internalObject.method()('test' + i.toString()), 'internalObject-name-test' + i.toString(), "Error: this is not lexically binded inside of the arrow function #1"); } obj.internalObject.name='newInternalObject'; for (var i=0; i<10000; i++) { testCase(obj.internalObject.method()('test' + i.toString()), 'newInternalObject-name-test' + i.toString(), "Error: this is not lexically binded inside of the arrow function #5"); }