It's known as optional chaining / null propagation. In Javascript it's described as ECMAScript proposal
instead of writing:
const phone = orders && orders[0] && orders[0].customer && orders[0].customer.phone
it could be like:
const phone = orders?[0]?.customer?.phone
For now, there are libraries like lodash/get, where we can use function:
import { get } from 'lodash' const phone = get(orders[0], 'customer.phone', 'optional default value')
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It's known as optional chaining / null propagation.
In Javascript it's described as ECMAScript proposal
instead of writing:
it could be like:
For now, there are libraries like lodash/get, where we can use function: