deps/npm/lib/update-dependents.js
function updateDepsTo (arg, cb) {
  asyncMap(arg._others, function (o, cb) {
    updateOtherVersionDeps(o, arg, cb)
  }, cb)
}
function updateDepsTo (arg, cb) {
  asyncMap(arg._others, function (o, cb) {
    updateOtherVersionDeps(o, arg, cb)
  }, cb)
}
function updateDepsTo ( arg , cb ) { asyncMap ( arg . _others , function ( o , cb ) { updateOtherVersionDeps ( o , arg , cb ) } , cb ) }
update the _others to this one.
update the _others to this one .