JavaScript `new` operator return an object

new-operator-test.js

function foo() { return 'foo'; }
function bar() { return foo; }
foo()
//=> "foo"
bar()
//=> function foo() { return 'foo'; }
new foo()
//=> [Object foo]
new bar()
//=> function foo() { return 'foo'; }
new foo().constructor
//=> function foo() { return 'foo'; }
new bar().constructor
//=> function Function() { [native code] }

function baz() { return { name: 'baz' }; }
baz()
//=> [Object { name: 'baz' }]
new baz()
//=> [Object { name: 'baz' }]
baz().name
//=> "baz"
new baz().name
//=> "baz"

// Notice: `null` is not considered an object is this context
function qux() { return null; }
qux()
//=> null
new qux()
//=> [Object qux]