node.js + Object Array

You can use Array.prototype.reduce function, like this

console.log(data.reduce(function(result, current) {
    var obj = {};
    result[current.id_0] = result[current.id_0] || [];
    obj[current.id_1] = current.name_1;
    result[current.id_0].push(obj);
    return result
}, {}));

Output

{ '356': [ { '33': 'aaaa' }, { '27': 'dddd' } ],
  '456': [ { '89': 'ccccc' } ],
  '756': [ { '89': 'bbbbb' } ] }

If you want to convert this to an array of object, just wrap the result of data.reduce with [] like this

console.log([data.reduce(function(result, current) {
    ...
    ...
}, {})]);

Edit:

result[current.id_0] = result[current.id_0] || [];

this line makes sure that result[current.id_0] is an array. If the value of result[current.id_0] is truthy, then that value is rturned but if it is not, then [] will be returned. So, a new array will be created and assigned to result[current.id_0]. It is actually a shorthand for

if (result.hasOwnProperty(current.id_0) === false) {
    result[current.id_0] = [];
}

Edit 2: If you like to keep the grouped elements as an object, you could do like this

console.log(data.reduce(function(result, current) {
    result[current.id_0] = result[current.id_0] || {};
    result[current.id_0][current.id_1] = current.name_1;
    return result
}, {}));

Output

{ '356': { '27': 'dddd', '33': 'aaaa' },
  '456': { '89': 'ccccc' },
  '756': { '89': 'bbbbb' } }