.jshintrc

rebase: make rebase not crash if p1 == p2 != nullid

While this shouldn't happen normally, some historical bugs can have caused this
kind of commit to exist. Instead of crashing and having it be unobvious how to
recover, let's try to continue on. Without this, we get an error like
"ValueError: min() arg is an empty sequence"

Differential Revision: https://phab.mercurial-scm.org/D7664

{
    // 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)
}