Function uniqBy

uniqBy<T>(array, iteratee?): T[]
This method is like _.uniq except that it accepts iteratee which is invoked for each element in array to generate the criterion by which uniqueness is computed. The iteratee is invoked with one argument: (value).
Type Parameters
- T
Parameters
- array: undefined | null | List<T>
  The array to inspect.
- Optional iteratee: ValueIteratee<T>
  The iteratee invoked per element.
Returns T[]
Returns the new duplicate free array.
Example
```
_.uniqBy([2.1, 1.2, 2.3], Math.floor);
// => [2.1, 1.2]

// using the `_.property` iteratee shorthand
_.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
// => [{ 'x': 1 }, { 'x': 2 }]
```
- Defined in node_modules/@types/lodash/common/array.d.ts:1723

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