const object1 = {};
const array1 = [];
object1.property1 = 42;
array1[0] = 42;
console.log(object1.propertyIsEnumerable('property1'));
// expected output: true
console.log(array1.propertyIsEnumerable(0));
// expected output: true
console.log(array1.propertyIsEnumerable('length'));
// expected output: false
const object1 = {};const array1 = [];object1.property1 = 42;array1[0] = 42;console.log(object1.propertyIsEnumerable('property1'));// expected output: trueconsole.log(array1.propertyIsEnumerable(0));// expected output: trueconsole.log(array1.propertyIsEnumerable('length'));// expected output: false