Merge and extend JavaScript objects

Question

Please help - I want to merge and extend JavaScript objects in a way like in example below:

var objects = [{
        id: 1,
        fruits: "apple"
    },{
        id: 1,
        fruits: "bannana"
    },{
        id: 2,
        fruits: "tangerine"
    },{
        id: 2,
        fruits: "plum"
    }];

and to have results like:

var results = [{
        id: 1,
        fruits: ["apple", "bannana"]
    },{
        id: 2,
        fruits: ["tangerine", "plum"]
    }];

Is there any JavaScript, jQuery or easy custom solution to do it? It is different situation then here How can I merge properties of two JavaScript objects dynamically? or also $.expand() does not do here what I want. Thanks a lot!