dart-sdk/third_party/firefox_jsshell
..
linux
mac
win
README.google

Name: Firefox command line javascript shell.
Short Name: js-shell
URL: http://ftp.mozilla.org/pub/firefox/candidates/47.0-candidates/build2/
Version: JavaScript-C47
Date: June 3, 2016
License: MPL, http://www.mozilla.org/MPL

Description:
This directory contains the firefox js-shell binaries for Windows, Mac and
Linux.
The binaries are used for testing dart code compiled to javascript.