Turn an array into a tally

Array to Tally

var array = [
    {
        name: 'red',
        vlaue: 7
    },
    {
        name: 'red',
        vlaue: 7
    },
    {
        name: 'black',
        vlaue: 7
    },
    {
        name: 'blue',
        vlaue: 7
    },
    {
        name: 'black',
        vlaue: 7
    },
    {
        name: 'green',
        vlaue: 7
    },
    {
        name: 'red',
        vlaue: 7
    }
];

var arrayMap = {};

array.forEach(function(item) {
    arrayMap[item.name] = !_.isUndefined(arrayMap[item.name]) ? arrayMap[item.name] += 1 : 1;
});
console.log(JSON.stringify(arrayMap));
//{"red":3,"black":2,"blue":1,"green":1}

var tally = Object.keys(arrayMap).map(function(key) {
    return [key, arrayMap[key]];
});
console.log(JSON.stringify(tally));
//[["red",3],["black",2],["blue",1],["green",1]]