From e7850b44928ae99734afdd9508e752321756f3c5 Mon Sep 17 00:00:00 2001
From: Sergey Vinogradov <mr.vursen@gmail.com>
Date: Sun, 28 Nov 2021 21:40:42 +0300
Subject: [PATCH] fix: prevent jumping when in START state

---
 src/fsm-transitions.js   | 3 ++-
 test/transitions.test.js | 8 ++++----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/fsm-transitions.js b/src/fsm-transitions.js
index f8f81a9..fa3854d 100644
--- a/src/fsm-transitions.js
+++ b/src/fsm-transitions.js
@@ -6,7 +6,8 @@ export default {
       to: states.FINISH,
       when: (d) => [
         d.isSideInnerWithinPath === true,
-        d.viewportTop + d.sideInnerHeight > d.finishPoint
+        d.viewportTop + d.sideInnerHeight + d.bottomSpacing > d.finishPoint,
+        d.viewportBottom > d.finishPoint
       ]
     },
     {
diff --git a/test/transitions.test.js b/test/transitions.test.js
index eb8bdad..71d543b 100644
--- a/test/transitions.test.js
+++ b/test/transitions.test.js
@@ -205,7 +205,7 @@ describe('transitions', function() {
     // isSideInnerWithinPath === true
     describe('when height(content) > height(sidebarInner)', () => {
       beforeEach(async () => {
-        setContentHeight(sidebarInnerHeight * 2);
+        setContentHeight(sidebarInnerHeight * 1.5);
         await nextFrame();
       });
 
@@ -220,7 +220,7 @@ describe('transitions', function() {
         await forceUpdate();
         expectTransitionTo(BOTTOM_FIXED);
 
-        setContentHeight(sidebarInnerHeight / 2);
+        setContentHeight(sidebarInnerHeight / 1.5);
         await forceUpdate();
         expectTransitionTo(START);
       });
@@ -274,7 +274,7 @@ describe('transitions', function() {
         await forceUpdate();
         expectTransitionTo(UNFIXED);
 
-        setContentHeight(sidebarInnerHeight / 2);
+        setContentHeight(sidebarInnerHeight / 1.5);
         await forceUpdate();
         expectTransitionTo(START);
       });
@@ -408,7 +408,7 @@ describe('transitions', function() {
       });
 
       it('START => FINISH', async () => {
-        await scrollTo(getElementBottom(contentElement) - window.innerHeight);
+        await scrollTo(getElementBottom(contentElement) - window.innerHeight + 1);
         await forceUpdate();
         expectTransitionTo(FINISH);
       });