Hello World! 123 -123 123.567 -123.567 true false null undefined Symbol(Symbol Description) 2000-06-27T02:24:34.304Z [ 123, 456, 789 ] { "name": "foo" } { "a": 123, "b": 456, "c": 789 } { "a": { "b": { "c": 123 }, "bacon": true }, "name": "bar" } Promise { } [Function] [Function: Foo] {} [Function: foooo] /FooRegex/ Is it a bug or a feature that formatting numbers like 123 is colored String 123 should be 2nd word, 456 == 456 and percent s %s == What okay { "foo": { "name": "baz" }, "bar": [Circular] } am [ {}, {}, {}, {} ]