Full ECMAScript 5.1(+) implementation (including regex and strict
 mode) in Go.
 .
 It is not a replacement for V8 or SpiderMonkey or any other
 general-purpose JavaScript engine as it is much slower. It can be used
 as an embedded scripting language where the cost of making a lot of cgo
 calls may outweigh the benefits of a faster JavaScript engine or as a
 way to avoid having non-Go dependencies.