//#region src/value/scroll/offsets.ts
/**
* Preset scroll offsets matching framer-motion's ScrollOffset presets.
* Use with useScroll's offset option to define scroll-linked animation ranges.
*
* @example
* useScroll({ target: el, offset: ScrollOffset.Enter })
*/
var ScrollOffset = {
	/** Progress 0→1 as target enters the container */
	Enter: [[0, 1], [1, 1]],
	/** Progress 0→1 as target exits the container */
	Exit: [[0, 0], [1, 0]],
	/** Progress 0→1 across any overlap between target and container */
	Any: [[1, 0], [0, 1]],
	/** Progress 0→1 while target is fully contained within the container */
	All: [[0, 0], [1, 1]]
};
var presets = [
	[ScrollOffset.Enter, "entry"],
	[ScrollOffset.Exit, "exit"],
	[ScrollOffset.Any, "cover"],
	[ScrollOffset.All, "contain"]
];
var stringToProgress = {
	start: 0,
	end: 1
};
function parseStringOffset(s) {
	const parts = s.trim().split(/\s+/);
	if (parts.length !== 2) return void 0;
	const a = stringToProgress[parts[0]];
	const b = stringToProgress[parts[1]];
	if (a === void 0 || b === void 0) return void 0;
	return [a, b];
}
function normaliseOffset(offset) {
	if (offset.length !== 2) return void 0;
	const result = [];
	for (const item of offset) if (Array.isArray(item)) result.push(item);
	else if (typeof item === "string") {
		const parsed = parseStringOffset(item);
		if (!parsed) return void 0;
		result.push(parsed);
	} else return;
	return result;
}
function matchesPreset(offset, preset) {
	const normalised = normaliseOffset(offset);
	if (!normalised) return false;
	for (let i = 0; i < 2; i++) {
		const o = normalised[i];
		const p = preset[i];
		if (o[0] !== p[0] || o[1] !== p[1]) return false;
	}
	return true;
}
/**
* Maps a ScrollOffset array to a ViewTimeline named range.
* Returns undefined for unrecognised patterns — signals fallback to JS scroll tracking.
*
* Ported from framer-motion's internal render/dom/scroll/utils/offset-to-range.mjs
*/
function offsetToViewTimelineRange(offset) {
	if (!offset) return {
		rangeStart: "contain 0%",
		rangeEnd: "contain 100%"
	};
	for (const [preset, name] of presets) if (matchesPreset(offset, preset)) return {
		rangeStart: `${name} 0%`,
		rangeEnd: `${name} 100%`
	};
}
//#endregion
export { ScrollOffset, offsetToViewTimelineRange };