Merge objects in array based on property

Question

I have an array like so which i am trying to merge so any object that has the name property the same will after the merge contain a list of merged objects

va         


        

Answer 1

Another approach using Lodash with just chain and reduce

var array = [
    { name: "One", myList: ["Object1", "Object2"] },
    { name: "Two", myList: ["Object3", "Object4"] },
    { name: "One", myList: ["Object5", "Object6"] }
  ];

  const newArray = _.chain(array)
    .reduce((acc, currentValue) => {
      acc[currentValue.name] = (acc[currentValue.name] || []).concat(
        currentValue.myList
      );
      return acc;
    }, {})
    .reduce((acc, currentValue, key) => {
      acc.push({ name: key, myList: currentValue }); 
      return acc;
    }, [])
    .value();

  console.log(newArray);