arrayToObject.js

arrayToObject.js

function arrayToObject(a, key) {
  const getKey = (key, v, k) => {
    if (key === 'identity') {
      return v;
    } else if (key) {
      return v[key] || k;
    } else {
      return k;
    }
  }
  return _.reduce(a, (r, v, k) => ({...r, [getKey(key, v, k)]: v}), {});
}

console.log(arrayToObject(['test', 'test1']));
//{"0":"test","1":"test1"}
console.log(arrayToObject(['test', 'test1'], 'identity'));
//{"test":"test","test1":"test1"}
console.log(arrayToObject(['test', 'test1'], 'a'));
//{"0":"test","1":"test1"}
console.log(arrayToObject([{a:3, k:'test1'}, {a:2, k:'test2'}], 'k'));
//{"test1":{"a":3,"k":"test1"},"test2":{"a":2,"k":"test2"}}