A way of isolating dependencies. Mostly a code sketch, may eventually be part of Meteor

isolate.js

var isolate = function (f) {
  var dep = new Deps.Dependency();
  var result = Deps.nonreactive(f);
  var computation = Deps.autorun(function () {
    var newResult = f();
    if (!EJSON.equals(result, newResult)) {
      dep.changed();
      computation.stop();
      result = newResult;
    }
  });
  Deps.depend(dep);
  return result;
}