Transform arrays

Build an item transform once, then lift it over a list with mapEach.

import {mapEach, normalize, pipe, rename} from 'shapewire';

const toOrder = pipe(
  rename({order_id: 'id', created_at: 'createdAt'}),
  normalize({createdAt: 'isoDate', total: 'number'}),
);

const toOrders = mapEach(toOrder);

toOrders(response.orders);

If the endpoint omits the collection or returns null, toOrders produces []. This removes repeated optional chaining from rendering code.

mapEach does not coerce a single object into a one-item list. If an endpoint can return either form, resolve that transport inconsistency explicitly before calling the list transform.