✏️ Editing: shrink-handle-middle-row.js Writable

import {
	getRowInitialHeight,
	getRowStickyHeight,
	computeLinearScale,
	clamp,
} from './shrink-utils'

let shrinkCache = null

export const clearShrinkCache = () => {
	shrinkCache = null
}

const getShrinkData = ({ row }) => {
	if (shrinkCache) {
		return shrinkCache
	}

let rowInitialHeight = getRowInitialHeight(row)
	let rowStickyHeight = getRowStickyHeight(row)

shrinkCache = { rowInitialHeight, rowStickyHeight }

return shrinkCache
}

export const shrinkHandleMiddleRow = ({
	stickyContainer,
	containerInitialHeight,
	startPosition,
}) => {
	if (!stickyContainer.querySelector('[data-row*="middle"]')) {
		return
	}

;[stickyContainer.querySelector('[data-row*="middle"]')].map((row) => {
		let { rowInitialHeight, rowStickyHeight } = getShrinkData({ row })

if (rowInitialHeight !== rowStickyHeight) {
			let shrinkHeight = rowStickyHeight

if (
				true ||
				stickyContainer.dataset.sticky.indexOf('auto-hide') === -1
			) {
				shrinkHeight = computeLinearScale(
					[
						startPosition,
						startPosition +
							Math.abs(rowInitialHeight - rowStickyHeight),
					],
					[rowInitialHeight, rowStickyHeight],
					clamp(
						startPosition,

startPosition +
							Math.abs(rowInitialHeight - rowStickyHeight),

scrollY
					)
				)
			}

row.style.setProperty(
				'--shrink-height',
				`${Math.round(shrinkHeight)}px`
			)
		}
	})
}

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