DMDScript

http://www.digitalmars.com/dscript/index.html
JavaScriptD言語実装…いまいち素性がよく分からない。

DMDScript is the Digital Mars implementation of the ECMA262 scripting
language, also known as javascript.
The D implementation is very high performance, as you can verify using
the enclosed sieve benchmark. Try it!

とのこと。
ソースコードのみの配布らしい。

DMDScript in D comes as source code in D with a compiled library.
To use it, you'll need the D compiler from www.digitalmars.com/d/