SpiderMonkey's uneval for common types

gistfile1.js

function repr(v) {
  print(uneval(v))
}

repr(false)
//-> false

repr(true)
//-> true

repr(null)
//-> null

repr(undefined)
//-> (void 0)

repr('foo')
//-> "foo"

repr(123)
//-> 123

repr(123.4)
//-> 123.4

r = new RegExp('foo')
repr(r)
//-> /foo/

repr(new Date)
//-> (new Date(1237141453430))

repr([0, 1, [2, 3]])
//-> [0, 1, [2, 3]]

repr({foo: 123})
//-> ({foo:123})

a = [1, 2, 3]
a.push(a)
repr(a)
//-> #1=[1, 2, 3, #1#]

h = {foo: 123}
h.bar = h
repr(h)
//-> #1={foo:123, bar:#1#}

function Foo() {
var self = {}
self.__init__ = function () {
  self.foo = 123
  self.bar = 456
}
return self
}
repr(Foo())
//-> ({__init__:(function () {self.foo = 123;self.bar = 456;})})

repr(Foo)
//-> function Foo() {var self = {};self.__init__ = function () {self.foo = 123;self.bar = 456;};return self;}

repr([].reverse)
//-> function reverse() {[native code]}