UiSize

type UiSize = number | 'fit' | 'grow'

import type { UiSize } from '@driftengine/ui2d';

In depth

A number is that many units. fit is whatever its own contents come to. grow takes an equal share of what is left along the parent's main axis, and behaves as fit across it.

Three cases rather than a percentage or a flex factor, and the omission is deliberate: a percentage of a parent that is itself fit is a cycle, and a weighted grow is a fourth case whose only caller so far would be a two-to-one split that two nested nodes already express.