Refactor popover engine to use Floating UI

docs/menus.md

@@ -76,6 +76,18 @@ Pass `document`, `placement`, and other floating-ui options through the third
 argument. The helper exposes `open()`, `close()`, `toggle()`, `isOpen()`, and
 `destroy()` for lifecycle control.
 
+### Floating UI dependency
+
+The shared popover engine standardizes on
+[`@floating-ui/dom`](https://floating-ui.com/) for positioning. The module is
+vendored to `vendor/floating-ui.dom.bundle.min.js` by
+`npm run build:beacon`, which bundles dependencies and copies the upstream
+license alongside `nostr-tools`. Run that build whenever you bump Floating UI so
+the checked-in vendor artifact stays in sync. New overlays should lean on the
+engine rather than re-implementing manual gap, flip, or viewport clamp math—the
+middleware layer already applies the configured gap and viewport padding via
+`offset()`, `flip()`, and `shift()` helpers.
+
 ## Tailwind overlay classes
 
 Tailwind ships token-backed overlay helpers that keep surfaces aligned with the

js/ui/overlay/popoverEngine.js

@@ -5,6 +5,14 @@ import {
   readDesignToken,
 } from "../../designSystem/metrics.js";
 import { ensureOverlayRoot } from "./overlayRoot.js";
+import {
+  arrow as arrowMiddleware,
+  autoUpdate,
+  computePosition,
+  flip,
+  offset,
+  shift,
+} from "../../../vendor/floating-ui.dom.bundle.min.js";
 
 const DEFAULT_PLACEMENT = "bottom-start";
 const DEFAULT_STRATEGY = "fixed";
@@ -107,61 +115,56 @@ function resolveArrow(option, panel) {
   return null;
 }
 
-function applyArrowStyles({
+function applyArrowStyles({ arrowElement, placement, middlewareData }) {
-  arrowElement,
+  if (!arrowElement || typeof placement !== "string") {
-  side,
-  panelLeft,
-  panelTop,
-  panelWidth,
-  panelHeight,
-  anchorRect,
-}) {
-  if (!arrowElement || !side || !anchorRect) {
     return;
   }
 
-  const arrowRect =
+  const basePlacement = placement.split("-")[0];
-    typeof arrowElement.getBoundingClientRect === "function"
+  const arrowData = middlewareData?.arrow || null;
-      ? arrowElement.getBoundingClientRect()
-      : null;
-  const arrowWidth = arrowRect?.width ?? arrowElement.offsetWidth ?? 0;
-  const arrowHeight = arrowRect?.height ?? arrowElement.offsetHeight ?? 0;
-
-  const anchorCenterX = anchorRect.left + anchorRect.width / 2;
-  const anchorCenterY = anchorRect.top + anchorRect.height / 2;
 
   arrowElement.style.left = "";
   arrowElement.style.right = "";
   arrowElement.style.top = "";
   arrowElement.style.bottom = "";
 
-  if (side === "top" || side === "bottom") {
+  if (!arrowData || !basePlacement) {
-    let arrowLeft = anchorCenterX - panelLeft - arrowWidth / 2;
+    delete arrowElement.dataset.popoverArrowSide;
-    arrowLeft = Math.min(
+    return;
-      Math.max(arrowLeft, 0),
-      Math.max(panelWidth - arrowWidth, 0),
-    );
-    arrowElement.style.left = `${Math.round(arrowLeft)}px`;
-    if (side === "bottom") {
-      arrowElement.style.top = `${-Math.round(arrowHeight)}px`;
-    } else {
-      arrowElement.style.bottom = `${-Math.round(arrowHeight)}px`;
-    }
-  } else if (side === "left" || side === "right") {
-    let arrowTop = anchorCenterY - panelTop - arrowHeight / 2;
-    arrowTop = Math.min(
-      Math.max(arrowTop, 0),
-      Math.max(panelHeight - arrowHeight, 0),
-    );
-    arrowElement.style.top = `${Math.round(arrowTop)}px`;
-    if (side === "right") {
-      arrowElement.style.left = `${-Math.round(arrowWidth)}px`;
-    } else {
-      arrowElement.style.right = `${-Math.round(arrowWidth)}px`;
-    }
   }
 
-  arrowElement.dataset.popoverArrowSide = side;
+  const staticSideMap = {
+    top: "bottom",
+    right: "left",
+    bottom: "top",
+    left: "right",
+  };
+
+  if (Number.isFinite(arrowData.x)) {
+    arrowElement.style.left = `${Math.round(arrowData.x)}px`;
+  }
+
+  if (Number.isFinite(arrowData.y)) {
+    arrowElement.style.top = `${Math.round(arrowData.y)}px`;
+  }
+
+  const staticSide = staticSideMap[basePlacement] || null;
+
+  if (staticSide) {
+    const arrowRect =
+      typeof arrowElement.getBoundingClientRect === "function"
+        ? arrowElement.getBoundingClientRect()
+        : null;
+    const arrowWidth = arrowRect?.width ?? arrowElement.offsetWidth ?? 0;
+    const arrowHeight = arrowRect?.height ?? arrowElement.offsetHeight ?? 0;
+    const offsetValue =
+      basePlacement === "top" || basePlacement === "bottom"
+        ? arrowHeight
+        : arrowWidth;
+    arrowElement.style[staticSide] = `${-Math.round(offsetValue)}px`;
+  }
+
+  arrowElement.dataset.popoverArrowSide = basePlacement;
 }
 
 function containsTarget(root, target) {
@@ -181,85 +184,6 @@ function setExpandedAttribute(trigger, value) {
   trigger.setAttribute("aria-expanded", value ? "true" : "false");
 }
 
-function createAutoUpdate({ documentRef, anchor, panel, update }) {
-  if (!documentRef || !anchor || !panel || typeof update !== "function") {
-    return null;
-  }
-
-  const cleanupFns = [];
-  const safeUpdate = () => {
-    try {
-      const result = update();
-      if (result && typeof result.then === "function") {
-        result.catch((error) => {
-          logger.dev.warn("[popover] auto-update failed", error);
-        });
-      }
-    } catch (error) {
-      logger.dev.warn("[popover] auto-update failed", error);
-    }
-  };
-
-  const view = documentRef.defaultView || globalThis;
-  if (view && typeof view.addEventListener === "function") {
-    const resizeHandler = () => safeUpdate();
-    view.addEventListener("resize", resizeHandler);
-    cleanupFns.push(() => view.removeEventListener("resize", resizeHandler));
-
-    const scrollHandler = () => safeUpdate();
-    view.addEventListener("scroll", scrollHandler, true);
-    cleanupFns.push(() => view.removeEventListener("scroll", scrollHandler, true));
-  }
-
-  const scrollTarget = documentRef.scrollingElement || documentRef;
-  if (scrollTarget && typeof scrollTarget.addEventListener === "function") {
-    const docScrollHandler = () => safeUpdate();
-    scrollTarget.addEventListener("scroll", docScrollHandler, true);
-    cleanupFns.push(() =>
-      scrollTarget.removeEventListener("scroll", docScrollHandler, true),
-    );
-  }
-
-  const observers = [];
-  if (typeof ResizeObserver === "function") {
-    try {
-      const anchorObserver = new ResizeObserver(safeUpdate);
-      anchorObserver.observe(anchor);
-      observers.push(anchorObserver);
-    } catch (error) {
-      logger.dev.warn("[popover] anchor resize observer failed", error);
-    }
-
-    if (panel !== anchor) {
-      try {
-        const panelObserver = new ResizeObserver(safeUpdate);
-        panelObserver.observe(panel);
-        observers.push(panelObserver);
-      } catch (error) {
-        logger.dev.warn("[popover] panel resize observer failed", error);
-      }
-    }
-  }
-
-  return () => {
-    cleanupFns.forEach((cleanup) => {
-      try {
-        cleanup();
-      } catch (error) {
-        logger.dev.warn("[popover] auto-update cleanup failed", error);
-      }
-    });
-
-    observers.forEach((observer) => {
-      try {
-        observer.disconnect();
-      } catch (error) {
-        logger.dev.warn("[popover] observer disconnect failed", error);
-      }
-    });
-  };
-}
-
 export function createPopover(trigger, render, options = {}) {
   const anchor = isElement(trigger) ? trigger : null;
   const documentRef = resolveDocument(anchor, options.document);
@@ -714,124 +638,56 @@ export function createPopover(trigger, render, options = {}) {
   }
 
   async function updatePosition() {
-    if (!anchor || !panel || !documentRef) {
+    if (!anchor || !panel) {
       return;
     }
 
     try {
-      const anchorRect =
-        typeof anchor.getBoundingClientRect === "function"
-          ? anchor.getBoundingClientRect()
-          : null;
-      if (!anchorRect) {
-        return;
-      }
-
-      const view = documentRef.defaultView || globalThis;
-      const docEl = documentRef.documentElement || null;
-      const viewportWidth =
-        docEl?.clientWidth ?? view?.innerWidth ?? panel.offsetWidth ?? 0;
-      const viewportHeight =
-        docEl?.clientHeight ?? view?.innerHeight ?? panel.offsetHeight ?? 0;
-
-      const panelRect =
-        typeof panel.getBoundingClientRect === "function"
-          ? panel.getBoundingClientRect()
-          : null;
-      const panelWidth = panelRect?.width ?? panel.offsetWidth ?? 0;
-      const panelHeight = panelRect?.height ?? panel.offsetHeight ?? 0;
-
-      let [side, alignment = "start"] = placement.split("-");
-      if (!side || !["top", "bottom", "left", "right"].includes(side)) {
-        side = "bottom";
-      }
-      if (!["start", "end", "center"].includes(alignment)) {
-        alignment = "start";
-      }
-
       const effectiveGap = Number.isFinite(gap) ? gap : 0;
       const safePadding = Number.isFinite(viewportPadding) ? viewportPadding : 0;
+      const middleware = [
+        offset(effectiveGap),
+        flip({ padding: safePadding }),
+        shift({ padding: safePadding }),
+      ];
 
-      function clamp(value, min, max, fallback) {
+      if (arrowElement) {
-        if (!Number.isFinite(value)) {
+        middleware.push(
-          return fallback ?? min;
+          arrowMiddleware({
-        }
+            element: arrowElement,
-        if (min > max) {
+          }),
-          return fallback ?? (min + max) / 2;
+        );
-        }
-        return Math.min(Math.max(value, min), max);
       }
 
-      if (side === "bottom") {
+      const {
-        const fitsBelow =
+        x,
-          anchorRect.bottom + effectiveGap + panelHeight <=
+        y,
-          viewportHeight - safePadding;
+        placement: resolvedPlacement,
-        const fitsAbove =
+        middlewareData,
-          anchorRect.top - effectiveGap - panelHeight >= safePadding;
+        strategy: resolvedStrategy,
-        if (!fitsBelow && fitsAbove) {
+      } = await computePosition(anchor, panel, {
-          side = "top";
+        placement,
-        }
+        strategy,
-      } else if (side === "top") {
+        middleware,
-        const fitsAbove =
+      });
-          anchorRect.top - effectiveGap - panelHeight >= safePadding;
-        const fitsBelow =
-          anchorRect.bottom + effectiveGap + panelHeight <=
-          viewportHeight - safePadding;
-        if (!fitsAbove && fitsBelow) {
-          side = "bottom";
-        }
-      }
 
-      let top = 0;
+      const nextX = Number.isFinite(x) ? x : 0;
-      let left = 0;
+      const nextY = Number.isFinite(y) ? y : 0;
+      const finalPlacement =
+        typeof resolvedPlacement === "string" && resolvedPlacement
+          ? resolvedPlacement
+          : placement;
 
-      if (side === "top") {
+      panel.style.position = resolvedStrategy || strategy;
-        top = anchorRect.top - panelHeight - effectiveGap;
+      panel.style.left = `${Math.round(nextX)}px`;
-      } else if (side === "bottom") {
+      panel.style.top = `${Math.round(nextY)}px`;
-        top = anchorRect.bottom + effectiveGap;
+      panel.dataset.popoverPlacement = finalPlacement;
-      } else if (side === "left") {
-        top = anchorRect.top + anchorRect.height / 2 - panelHeight / 2;
-      } else if (side === "right") {
-        top = anchorRect.top + anchorRect.height / 2 - panelHeight / 2;
-      }
-
-      if (side === "left") {
-        left = anchorRect.left - panelWidth - effectiveGap;
-      } else if (side === "right") {
-        left = anchorRect.right + effectiveGap;
-      } else if (alignment === "end") {
-        left = anchorRect.right - panelWidth;
-      } else if (alignment === "center") {
-        left = anchorRect.left + anchorRect.width / 2 - panelWidth / 2;
-      } else {
-        left = anchorRect.left;
-      }
-
-      const minTop = safePadding;
-      const maxTop = viewportHeight - safePadding - panelHeight;
-      const minLeft = safePadding;
-      const maxLeft = viewportWidth - safePadding - panelWidth;
-
-      const fallbackTop = viewportHeight / 2 - panelHeight / 2;
-      const fallbackLeft = viewportWidth / 2 - panelWidth / 2;
-
-      top = clamp(top, minTop, maxTop, fallbackTop);
-      left = clamp(left, minLeft, maxLeft, fallbackLeft);
-
-      panel.style.position = strategy;
-      panel.style.left = `${Math.round(left)}px`;
-      panel.style.top = `${Math.round(top)}px`;
-      panel.dataset.popoverPlacement = `${side}-${alignment}`;
 
       if (arrowElement) {
         applyArrowStyles({
           arrowElement,
-          side,
+          placement: finalPlacement,
-          panelLeft: left,
+          middlewareData,
-          panelTop: top,
-          panelWidth,
-          panelHeight,
-          anchorRect,
         });
       }
     } catch (error) {
@@ -909,12 +765,19 @@ export function createPopover(trigger, render, options = {}) {
       autoUpdateCleanup = null;
     }
 
-    autoUpdateCleanup = createAutoUpdate({
+    autoUpdateCleanup = autoUpdate(
-      documentRef,
       anchor,
-      panel: panelElement,
+      panelElement,
-      update: () => updatePosition(),
+      () => {
-    });
+        void updatePosition();
+      },
+      {
+        ancestorScroll: true,
+        ancestorResize: true,
+        elementResize: true,
+        layoutShift: true,
+      },
+    );
 
     await updatePosition();
 

package-lock.json

@@ -9,6 +9,7 @@
       "version": "1.0.0",
       "license": "GPL-3.0-or-later",
       "dependencies": {
+        "@floating-ui/dom": "^1.7.4",
         "path": "^0.12.7",
         "webtorrent": "^1.9.7"
       },
@@ -708,6 +709,31 @@
         "node": ">=18"
       }
     },
+    "node_modules/@floating-ui/core": {
+      "version": "1.7.3",
+      "resolved": "https://registry.npmjs.org/@floating-ui/core/-/core-1.7.3.tgz",
+      "integrity": "sha512-sGnvb5dmrJaKEZ+LDIpguvdX3bDlEllmv4/ClQ9awcmCZrlx5jQyyMWFM5kBI+EyNOCDDiKk8il0zeuX3Zlg/w==",
+      "license": "MIT",
+      "dependencies": {
+        "@floating-ui/utils": "^0.2.10"
+      }
+    },
+    "node_modules/@floating-ui/dom": {
+      "version": "1.7.4",
+      "resolved": "https://registry.npmjs.org/@floating-ui/dom/-/dom-1.7.4.tgz",
+      "integrity": "sha512-OOchDgh4F2CchOX94cRVqhvy7b3AFb+/rQXyswmzmGakRfkMgoWVjfnLWkRirfLEfuD4ysVW16eXzwt3jHIzKA==",
+      "license": "MIT",
+      "dependencies": {
+        "@floating-ui/core": "^1.7.3",
+        "@floating-ui/utils": "^0.2.10"
+      }
+    },
+    "node_modules/@floating-ui/utils": {
+      "version": "0.2.10",
+      "resolved": "https://registry.npmjs.org/@floating-ui/utils/-/utils-0.2.10.tgz",
+      "integrity": "sha512-aGTxbpbg8/b5JfU1HXSrbH3wXZuLPJcNEcZQFMxLs3oSzgtVu6nFPkbbGGUvBcUjKV2YyB9Wxxabo+HEH9tcRQ==",
+      "license": "MIT"
+    },
     "node_modules/@isaacs/cliui": {
       "version": "8.0.2",
       "resolved": "https://registry.npmjs.org/@isaacs/cliui/-/cliui-8.0.2.tgz",

package.json

@@ -40,6 +40,7 @@
   },
   "license": "GPL-3.0-or-later",
   "dependencies": {
+    "@floating-ui/dom": "^1.7.4",
     "path": "^0.12.7",
     "webtorrent": "^1.9.7"
   }

scripts/build-beacon.mjs

@@ -1,9 +1,10 @@
 #!/usr/bin/env node
 
 import { build } from "esbuild";
-import { mkdir } from "node:fs/promises";
+import { copyFile, mkdir } from "node:fs/promises";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
+import { createRequire } from "node:module";
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
@@ -11,8 +12,23 @@ const repoRoot = path.resolve(__dirname, "..");
 const entryPoint = path.join(repoRoot, "torrent/src/beacon-vendor.js");
 const outDir = path.join(repoRoot, "torrent/dist");
 const outFile = path.join(outDir, "beacon.js");
+const vendorDir = path.join(repoRoot, "vendor");
+const vendorOutFile = path.join(vendorDir, "floating-ui.dom.bundle.min.js");
+const vendorLicenseFile = path.join(vendorDir, "floating-ui.LICENSE");
+const floatingUiEntry = path.join(
+  repoRoot,
+  "scripts/vendor/floating-ui-dom-entry.mjs",
+);
+
+const require = createRequire(import.meta.url);
+const floatingUiPackageJson = require.resolve("@floating-ui/dom/package.json");
+const floatingUiLicense = path.join(
+  path.dirname(floatingUiPackageJson),
+  "LICENSE",
+);
 
 await mkdir(outDir, { recursive: true });
+await mkdir(vendorDir, { recursive: true });
 
 await build({
   bundle: true,
@@ -34,3 +50,18 @@ await build({
   },
   logLevel: "info",
 });
+
+await build({
+  bundle: true,
+  entryPoints: [floatingUiEntry],
+  outfile: vendorOutFile,
+  format: "esm",
+  splitting: false,
+  platform: "browser",
+  target: ["es2020"],
+  minify: true,
+  sourcemap: false,
+  logLevel: "info",
+});
+
+await copyFile(floatingUiLicense, vendorLicenseFile);

scripts/vendor/floating-ui-dom-entry.mjs

@@ -0,0 +1,8 @@
+export {
+  arrow,
+  autoUpdate,
+  computePosition,
+  flip,
+  offset,
+  shift,
+} from "@floating-ui/dom";

vendor/floating-ui.LICENSE

@@ -0,0 +1,20 @@
+MIT License
+
+Copyright (c) 2021-present Floating UI contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/floating-ui.dom.bundle.min.js

@@ -0,0 +1 @@
+var H=Math.min,B=Math.max,ot=Math.round,it=Math.floor,L=t=>({x:t,y:t}),qt={left:"right",right:"left",bottom:"top",top:"bottom"},Ut={start:"end",end:"start"};function lt(t,e,n){return B(t,H(e,n))}function U(t,e){return typeof t=="function"?t(e):t}function V(t){return t.split("-")[0]}function K(t){return t.split("-")[1]}function pt(t){return t==="x"?"y":"x"}function at(t){return t==="y"?"height":"width"}var Kt=new Set(["top","bottom"]);function W(t){return Kt.has(V(t))?"y":"x"}function ft(t){return pt(W(t))}function Ot(t,e,n){n===void 0&&(n=!1);let o=K(t),i=ft(t),r=at(i),s=i==="x"?o===(n?"end":"start")?"right":"left":o==="start"?"bottom":"top";return e.reference[r]>e.floating[r]&&(s=nt(s)),[s,nt(s)]}function Rt(t){let e=nt(t);return[ct(t),e,ct(e)]}function ct(t){return t.replace(/start|end/g,e=>Ut[e])}var bt=["left","right"],At=["right","left"],Gt=["top","bottom"],Jt=["bottom","top"];function Qt(t,e,n){switch(t){case"top":case"bottom":return n?e?At:bt:e?bt:At;case"left":case"right":return e?Gt:Jt;default:return[]}}function St(t,e,n,o){let i=K(t),r=Qt(V(t),n==="start",o);return i&&(r=r.map(s=>s+"-"+i),e&&(r=r.concat(r.map(ct)))),r}function nt(t){return t.replace(/left|right|bottom|top/g,e=>qt[e])}function Zt(t){return{top:0,right:0,bottom:0,left:0,...t}}function wt(t){return typeof t!="number"?Zt(t):{top:t,right:t,bottom:t,left:t}}function X(t){let{x:e,y:n,width:o,height:i}=t;return{width:o,height:i,top:n,left:e,right:e+o,bottom:n+i,x:e,y:n}}function Ct(t,e,n){let{reference:o,floating:i}=t,r=W(e),s=ft(e),c=at(s),a=V(e),l=r==="y",d=o.x+o.width/2-i.width/2,u=o.y+o.height/2-i.height/2,g=o[c]/2-i[c]/2,f;switch(a){case"top":f={x:d,y:o.y-i.height};break;case"bottom":f={x:d,y:o.y+o.height};break;case"right":f={x:o.x+o.width,y:u};break;case"left":f={x:o.x-i.width,y:u};break;default:f={x:o.x,y:o.y}}switch(K(e)){case"start":f[s]-=g*(n&&l?-1:1);break;case"end":f[s]+=g*(n&&l?-1:1);break}return f}var Pt=async(t,e,n)=>{let{placement:o="bottom",strategy:i="absolute",middleware:r=[],platform:s}=n,c=r.filter(Boolean),a=await(s.isRTL==null?void 0:s.isRTL(e)),l=await s.getElementRects({reference:t,floating:e,strategy:i}),{x:d,y:u}=Ct(l,o,a),g=o,f={},m=0;for(let h=0;h<c.length;h++){let{name:w,fn:p}=c[h],{x,y,data:b,reset:v}=await p({x:d,y:u,initialPlacement:o,placement:g,strategy:i,middlewareData:f,rects:l,platform:s,elements:{reference:t,floating:e}});d=x??d,u=y??u,f={...f,[w]:{...f[w],...b}},v&&m<=50&&(m++,typeof v=="object"&&(v.placement&&(g=v.placement),v.rects&&(l=v.rects===!0?await s.getElementRects({reference:t,floating:e,strategy:i}):v.rects),{x:d,y:u}=Ct(l,g,a)),h=-1)}return{x:d,y:u,placement:g,strategy:i,middlewareData:f}};async function xt(t,e){var n;e===void 0&&(e={});let{x:o,y:i,platform:r,rects:s,elements:c,strategy:a}=t,{boundary:l="clippingAncestors",rootBoundary:d="viewport",elementContext:u="floating",altBoundary:g=!1,padding:f=0}=U(e,t),m=wt(f),w=c[g?u==="floating"?"reference":"floating":u],p=X(await r.getClippingRect({element:(n=await(r.isElement==null?void 0:r.isElement(w)))==null||n?w:w.contextElement||await(r.getDocumentElement==null?void 0:r.getDocumentElement(c.floating)),boundary:l,rootBoundary:d,strategy:a})),x=u==="floating"?{x:o,y:i,width:s.floating.width,height:s.floating.height}:s.reference,y=await(r.getOffsetParent==null?void 0:r.getOffsetParent(c.floating)),b=await(r.isElement==null?void 0:r.isElement(y))?await(r.getScale==null?void 0:r.getScale(y))||{x:1,y:1}:{x:1,y:1},v=X(r.convertOffsetParentRelativeRectToViewportRelativeRect?await r.convertOffsetParentRelativeRectToViewportRelativeRect({elements:c,rect:x,offsetParent:y,strategy:a}):x);return{top:(p.top-v.top+m.top)/b.y,bottom:(v.bottom-p.bottom+m.bottom)/b.y,left:(p.left-v.left+m.left)/b.x,right:(v.right-p.right+m.right)/b.x}}var Tt=t=>({name:"arrow",options:t,async fn(e){let{x:n,y:o,placement:i,rects:r,platform:s,elements:c,middlewareData:a}=e,{element:l,padding:d=0}=U(t,e)||{};if(l==null)return{};let u=wt(d),g={x:n,y:o},f=ft(i),m=at(f),h=await s.getDimensions(l),w=f==="y",p=w?"top":"left",x=w?"bottom":"right",y=w?"clientHeight":"clientWidth",b=r.reference[m]+r.reference[f]-g[f]-r.floating[m],v=g[f]-r.reference[f],M=await(s.getOffsetParent==null?void 0:s.getOffsetParent(l)),R=M?M[y]:0;(!R||!await(s.isElement==null?void 0:s.isElement(M)))&&(R=c.floating[y]||r.floating[m]);let Z=b/2-v/2,_=R/2-h[m]/2-1,F=H(u[p],_),tt=H(u[x],_),z=F,et=R-h[m]-tt,A=R/2-h[m]/2+Z,I=lt(z,A,et),k=!a.arrow&&K(i)!=null&&A!==I&&r.reference[m]/2-(A<z?F:tt)-h[m]/2<0,P=k?A<z?A-z:A-et:0;return{[f]:g[f]+P,data:{[f]:I,centerOffset:A-I-P,...k&&{alignmentOffset:P}},reset:k}}});var Lt=function(t){return t===void 0&&(t={}),{name:"flip",options:t,async fn(e){var n,o;let{placement:i,middlewareData:r,rects:s,initialPlacement:c,platform:a,elements:l}=e,{mainAxis:d=!0,crossAxis:u=!0,fallbackPlacements:g,fallbackStrategy:f="bestFit",fallbackAxisSideDirection:m="none",flipAlignment:h=!0,...w}=U(t,e);if((n=r.arrow)!=null&&n.alignmentOffset)return{};let p=V(i),x=W(c),y=V(c)===c,b=await(a.iLine truncated