view .jshintrc @ 39495:6a53842727c1

snapshot: consider unrelated snapshots at a similar level first

This new step is inserted before considering using a level-N snapshot as a
base for a level-N+1 snapshot. We first check if existing level-N+1 snapshots
using the same base would be a suitable base for a level-N+2 snapshot.

This increases snapshot reuse and limits the risk of snapshot explosion in
very branchy repositories.

Using a "deeper" snapshot as the base also results in a smaller snapshot since
it builds a level-N+2 intermediate snapshot instead of an N+1 one.

This logic is similar for the one we added in a previous commit. In that
previous commit is only applied to level-0 "siblings".

We can see this effect in the test repository. Snapshots moved from lower
levels to higher levels.

{
    // 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)
}