hasKey

hasKey(object, key) → boolean · Object

Check if an object has a property with the given key name.

• object (required): the object to check

• key (required): property name as string

echo '{"name": "Alice", "email": "alice@example.com"}' | utlx -e 'hasKey($input, "email")'
# true

if (hasKey($input, "shippingAddress")) {
  address: $input.shippingAddress
} else {
  address: $input.billingAddress
}

Also: containsValue(object, value) — check if any property has a specific value.