Function projectItems

projectItems<TItem = any>(
items: List<TItem>,
projections?: List<Projection<TItem>>,
): List<TItem>
Keeps only the projected fields of the items of a list, as a SELECT of some columns would: every item becomes a new object holding the projected fields it has (a field the item lacks is not added), a field projected twice is kept once, a null or undefined item stays as it is. Without projections, or with an empty list, the items are returned whole. The list and its items are never mutated; the result is always a new array.
Type Parameters
- TItem = any
Parameters
- items: List<TItem>
  Items to project.
- Optionalprojections: List<Projection<TItem>>
  Fields to keep; none, or an empty list, for every field.
Returns List<TItem>
the projected items, typed as whole items because the readers return them as such; a copy of the list without projections.
Example
```
const names = projectItems(users, [{ field: "id" }, { field: "lastName" }]);
// [{ id: 1, lastName: "Doe" }, ...]
```
- Defined in src/query-items/projection/in-memory/utils.ts:22