1const things = {
2  thing: [
3    { place: 'here', name: 'stuff' },
4    { place: 'there', name: 'morestuff1' },
5    { place: 'there', name: 'morestuff2' }, 
6  ],
7};
8
9const removeDuplicates = (array, key) => {
10  return array.reduce((arr, item) => {
11    const removed = arr.filter(i => i[key] !== item[key]);
12    return [...removed, item];
13  }, []);
14};
15
16console.log(removeDuplicates(things.thing, 'place'));
17// > [{ place: 'here', name: 'stuff' }, { place: 'there', name: 'morestuff2' }]
18