Lodash sorting object by values, without losing the key

Question

Let's say I have an object:

{Derp: 17, Herp: 2, Asd: 5, Foo: 8, Qwe: 12} 

And I need to sort it by value. What I'm looking to get is:

{Derp: 17, Qwe: 12, Foo: 8, Asd: 5, Herp: 2} 

I'd like to use lodash for it. When I use _.sortBy it doesn't retain the keys how ever:

_.sortBy({Derp: 17, Herp: 2, Asd: 5, Foo: 8, Qwe: 12}).reverse(); // [17, 12, 8, 5, 2] 

Hell, I'd even settle for just the array of keys, but still sorted by the value in the input:

['Derp', 'Herp', 'Foo', 'Asd', 'Qwe'] 

Answer 1

This worked for me

o = _.fromPairs(_.sortBy(_.toPairs(o), 1).reverse()) 

Here's an example:

var o = {    a: 2,    c: 3,    b: 1  };  o = _.fromPairs(_.sortBy(_.toPairs(o), 1).reverse())  console.log(o);

<script src="https://cdn.jsdelivr.net/lodash/4.17.4/lodash.min.js"></script>

Answer 2

I was struggling with a similar problem and I was able to solve it doing some transforms with lodash. For your problem it would be:

let doo = {Derp: 17, Herp: 2, Asd: 5, Foo: 8, Qwe: 12};  let foo = _.chain(doo)   .map((val, key) => {     return { name: key, count: val }   })   .sortBy('count')   .reverse()   .keyBy('name')   .mapValues('count')   .value();  console.log(foo); // Derp: 17, Qwe: 12, Foo: 8, Asd: 5, Herp: 2 }