delay positioning using observer to handle scrollable tooltip

src/packages/tour/position.cy.ts

@@ -0,0 +1,100 @@
+describe("Intro.js tooltip position with scrollable container", () => {
+  beforeEach(() => {
+    cy.visit("./cypress/setup/index.html");
+
+    // intro.js CSS
+    cy.document().then((doc) => {
+      if (!doc.getElementById("introjs-css")) {
+        const link = doc.createElement("link");
+        link.id = "introjs-css";
+        link.rel = "stylesheet";
+        link.href = "https://unpkg.com/intro.js/minified/introjs.min.css";
+        doc.head.appendChild(link);
+      }
+    });
+
+    // scrollable container and target element
+    cy.document().then((doc) => {
+      const container = doc.createElement("div");
+      container.id = "scrollable-container";
+      container.style.cssText =
+        "height: 600px; overflow-y: auto; border: 2px solid gray; margin-bottom: 20px;";
+
+      const inner = doc.createElement("div");
+      inner.style.height = "1000px";
+      inner.style.position = "relative";
+
+      const target = doc.createElement("div");
+      target.id = "target-element";
+      target.style.cssText =
+        "margin-top: 800px; background-color: yellow; padding: 10px;";
+      target.setAttribute("data-intro", "Scrollable test element");
+      target.textContent = "Step Element (scrollable test)";
+
+      inner.appendChild(target);
+      container.appendChild(inner);
+      doc.body.prepend(container);
+    });
+
+    // intro.js script and initialize tour
+    cy.window().then((win) => {
+      return new Promise((resolve) => {
+        const script = win.document.createElement("script");
+        script.src = "https://unpkg.com/intro.js/minified/intro.min.js";
+        script.onload = () => {
+          const tour = win.introJs.tour();
+          tour.setOptions({
+            steps: [
+              { element: "#target-element", intro: "Scrollable test tooltip" },
+              {
+                element: "#target-element",
+                intro: "Scrollable test tooltip 2",
+              },
+            ],
+          });
+          win.__testTour = tour;
+          resolve();
+        };
+        win.document.head.appendChild(script);
+      });
+    });
+  });
+
+  it("scrolls and ensures tooltip is correctly positioned near target", () => {
+    cy.get("#scrollable-container").scrollTo("top");
+    cy.get("#target-element")
+      .scrollIntoView({ block: "center" })
+      .should("be.visible");
+
+    cy.window().then((win) => {
+      win.__testTour.start();
+    });
+
+    cy.get(".introjs-tooltip", { timeout: 500 }).should("be.visible");
+
+    cy.get("#target-element").then(($target) => {
+      const targetRect = $target[0].getBoundingClientRect();
+
+      cy.get(".introjs-tooltip").then(($tooltip) => {
+        const tooltipRect = $tooltip[0].getBoundingClientRect();
+
+        cy.log("Target Rect:", JSON.stringify(targetRect));
+        cy.log("Tooltip Rect:", JSON.stringify(tooltipRect));
+
+        const horizontallySeparate =
+          tooltipRect.right < targetRect.left ||
+          tooltipRect.left > targetRect.right;
+        const verticallySeparate =
+          tooltipRect.bottom < targetRect.top ||
+          tooltipRect.top > targetRect.bottom;
+        expect(horizontallySeparate || verticallySeparate).to.be.true;
+
+        const verticalDistance = Math.min(
+          Math.abs(tooltipRect.top - targetRect.bottom),
+          Math.abs(targetRect.top - tooltipRect.bottom)
+        );
+        expect(verticalDistance).to.be.lessThan(16);
+      });
+    });
+  });
+});

src/packages/tour/position.test.ts

@@ -0,0 +1,44 @@
+import { setPositionRelativeToStep } from "./position";
+import { setPositionRelativeTo } from "../../util/positionRelativeTo";
+import { TourStep } from "./steps";
+
+jest.mock("../../util/positionRelativeTo", () => ({
+  setPositionRelativeTo: jest.fn(),
+}));
+
+beforeAll(() => {
+  // Mock requestAnimationFrame to call callback immediately
+  global.requestAnimationFrame = (cb) => {
+    cb(0);
+    return 0;
+  };
+});
+
+afterAll(() => {
+  global.requestAnimationFrame = undefined as any;
+});
+
+test("requestAnimationFrame runs and calls setPositionRelativeTo", () => {
+  const relativeElement = document.createElement("div");
+  const element = document.createElement("div");
+  const step: TourStep = {
+    step: 0,
+    title: "My Step Title",
+    intro: "My step description",
+    element: element,
+    position: "bottom",
+    tooltipClass: "my-tooltip-class",
+    highlightClass: "my-highlight-class",
+    scrollTo: "element",
+    disableInteraction: false,
+  };
+
+  setPositionRelativeToStep(relativeElement, element, step, 10);
+
+  expect(setPositionRelativeTo).toHaveBeenCalledWith(
+    relativeElement,
+    element,
+    step.element,
+    10
+  );
+});

src/packages/tour/position.ts

@@ -11,10 +11,12 @@ export const setPositionRelativeToStep = (
   step: TourStep,
   padding: number
 ) => {
-  setPositionRelativeTo(
-    relativeElement,
-    element,
-    step.element as HTMLElement,
-    step.position === "floating" ? 0 : padding
-  );
+  setTimeout(() => {
+    setPositionRelativeTo(
+      relativeElement,
+      element,
+      step.element as HTMLElement,
+      step.position === "floating" ? 0 : padding
+    );
+  }, 0);
 };

src/util/getOffset.ts

@@ -30,7 +30,6 @@ export default function getOffset(
   const scrollTop = window.pageYOffset || docEl.scrollTop || body.scrollTop;
   const scrollLeft = window.pageXOffset || docEl.scrollLeft || body.scrollLeft;
 
-
   relativeEl = relativeEl || docEl || body;
 
   const x = element.getBoundingClientRect();