lib/bundleLocator.js
function (pkgDepths) {
        // pkgDepths -> depth: [metas]
        var depths,
            minDepth,
            maxDepth,
            seeds;
        depths = Object.keys(pkgDepths);
        minDepth = Math.min.apply(Math, depths);
        maxDepth = Math.max.apply(Math, depths);
        seeds = pkgDepths[minDepth];
        if (1 === seeds.length) {
            if (minDepth !== maxDepth) {
                debug('multiple "' + seeds[0].name + '" packages found, using version ' +
                    seeds[0].version + ' from ' + seeds[0].baseDirectory);
            }
            return seeds[0];
        }
        seeds.sort(function (a, b) {
            return libsemver.rcompare(a.version, b.version);
        });
        debug('multiple "' + seeds[0].name + '" packages found, using version ' +
            seeds[0].version + ' from ' + seeds[0].baseDirectory);
        return seeds[0];
    }
function (pkgDepths) {
        // pkgDepths -> depth: [metas]
        var depths,
            minDepth,
            maxDepth,
            seeds;
        depths = Object.keys(pkgDepths);
        minDepth = Math.min.apply(Math, depths);
        maxDepth = Math.max.apply(Math, depths);
        seeds = pkgDepths[minDepth];
        if (1 === seeds.length) {
            if (minDepth !== maxDepth) {
                debug('multiple "' + seeds[0].name + '" packages found, using version ' +
                    seeds[0].version + ' from ' + seeds[0].baseDirectory);
            }
            return seeds[0];
        }
        seeds.sort(function (a, b) {
            return libsemver.rcompare(a.version, b.version);
        });
        debug('multiple "' + seeds[0].name + '" packages found, using version ' +
            seeds[0].version + ' from ' + seeds[0].baseDirectory);
        return seeds[0];
    }
Figures out which seed to use from the list of available packages.
Select by depth, then by semver.
@private
@method _dedupeSeeds
@param {object} pkgDepths List of seed by deep.
@return {object} The metas of the selected package.