Function declareUpdate

packages/core/src/SpringValue.ts:1123–1129

(props: any)

 * A modified version of `createUpdate` meant for declarative APIs.
 */
export function declareUpdate(props: any) {
  const update = createUpdate(props)
  if (is.und(update.default)) {
    update.default = getDefaultProps(update)
  }
  return update
}

/** Find keys with defined values */
function findDefined(values: Lookup, keys: Set<string>) {