.jshintrc

hgweb: validate WSGI environment dict

The wsgiref.validate module contains useful functions for validating
that various WSGI data structures are proper.

This commit adds validation of the environment dict to our built-in
HTTP server, which turns an HTTP request into an environment dict.

The check discovered that we weren't always setting QUERY_STRING,
which would cause the cgi module to fall back to sys.argv. So we
change things to always set QUERY_STRING.

The check passes on Python 2 and 3.

Differential Revision: https://phab.mercurial-scm.org/D2731

{
    // Enforcing
    "eqeqeq"        : true,     // true: Require triple equals (===) for comparison
    "forin"         : true,     // true: Require filtering for..in loops with obj.hasOwnProperty()
    "freeze"        : true,     // true: prohibits overwriting prototypes of native objects such as Array, Date etc.
    "nonbsp"        : true,     // true: Prohibit "non-breaking whitespace" characters.
    "undef"         : true,     // true: Require all non-global variables to be declared (prevents global leaks)

    // Environments
    "browser"       : true      // Web Browser (window, document, etc)
}