embla-carousel - npm Package Compare versions

Comparing version 6.0.2 to 6.1.0

components/Axis.d.ts

@@ -11,3 +11,3 @@ import { DirectionOptionType } from './Direction';
 };
-export declare function Axis(axis: AxisOptionType, contentDirection: DirectionOptionType): AxisType;
+export declare function Axis(axis: AxisOptionType, direction: DirectionOptionType): AxisType;
 export {};

components/Direction.d.ts

 export declare type DirectionOptionType = 'ltr' | 'rtl';
 export declare type DirectionType = {
-    applyTo: (n: number) => number;
+    apply: (n: number) => number;
 };
 export declare function Direction(direction: DirectionOptionType): DirectionType;

components/DragTracker.d.ts

 import { AxisOptionType, AxisType } from './Axis';
 import { PxToPercentType } from './PxToPercent';
-import { Vector1DType } from './Vector1d';
+export declare type PointerEventType = TouchEvent | MouseEvent;
 export declare type DragTrackerType = {
-    pointerDown: (evt: Event) => number;
-    pointerMove: (evt: Event) => number;
-    pointerUp: () => number;
-    readPoint: (evt: any, axis: AxisOptionType) => Vector1DType;
+    isTouchEvent: (evt: PointerEventType) => evt is TouchEvent;
+    pointerDown: (evt: PointerEventType) => number;
+    pointerMove: (evt: PointerEventType) => number;
+    pointerUp: (evt: PointerEventType) => number;
+    readPoint: (evt: PointerEventType, evtAxis?: AxisOptionType) => number;
 };
 export declare function DragTracker(axis: AxisType, pxToPercent: PxToPercentType): DragTrackerType;

components/Engine.d.ts

@@ -45,3 +45,5 @@ import { AnimationType } from './Animation';
     slideIndexes: number[];
+    containerRect: DOMRect;
+    slideRects: DOMRect[];
 };
 export declare function Engine(root: HTMLElement, container: HTMLElement, slides: HTMLElement[], options: OptionsType, events: EventEmitterType): Engine;

components/EventStore.d.ts

@@ -1,2 +0,2 @@
-declare type EventHandlerType = EventListener | EventListenerObject | null;
+declare type EventHandlerType = (evt: any) => void;
 declare type EventOptionsType = boolean | AddEventListenerOptions | undefined;
@@ -3,0 +3,0 @@ export declare type EventStoreType = {

components/SlidesInView.d.ts

@@ -1,2 +0,3 @@
-declare type SlideBoundType = {
+import { LimitType } from './Limit';
+export declare type SlideBoundType = {
     start: number;
@@ -7,6 +8,5 @@ end: number;
 export declare type SlidesInViewType = {
-    check: (location: number) => number[];
-    findSlideBounds: (offset: number, threshold?: number) => SlideBoundType[];
+    check: (location: number, bounds?: SlideBoundType[]) => number[];
+    findSlideBounds: (offsets?: number[], threshold?: number) => SlideBoundType[];
 };
-export declare function SlidesInView(viewSize: number, contentSize: number, slideSizes: number[], snaps: number[], loop: boolean, inViewThreshold: number): SlidesInViewType;
-export {};
+export declare function SlidesInView(viewSize: number, contentSize: number, slideSizes: number[], snaps: number[], limit: LimitType, loop: boolean, inViewThreshold: number): SlidesInViewType;

components/utils.d.ts

 export declare function map(value: number, iStart: number, iStop: number, oStart: number, oStop: number): number;
+export declare function mathAbs(n: number): number;
 export declare function mathSign(n: number): number;
@@ -7,5 +8,5 @@ export declare function deltaAbs(valueB: number, valueA: number): number;
 export declare function debounce(callback: () => void, time: number): () => void;
-export declare function groupArray<GenericType>(array: GenericType[], size: number): GenericType[][];
+export declare function arrayGroup<GenericType>(array: GenericType[], size: number): GenericType[][];
 export declare function arrayKeys<GenericType>(array: GenericType[]): number[];
 export declare function arrayLast<GenericType>(array: GenericType[]): GenericType;
-export declare function lastIndex<GenericType>(array: GenericType[]): number;
+export declare function arrayLastIndex<GenericType>(array: GenericType[]): number;

embla-carousel.esm.js

@@ -61,3 +61,3 @@ function Alignment(align, viewSize) {
 
-function Axis(axis, contentDirection) {
+function Axis(axis, direction) {
   var scroll = axis === 'y' ? 'y' : 'x';
@@ -76,3 +76,3 @@ var cross = axis === 'y' ? 'x' : 'y';
     if (scroll === 'y') return 'top';
-    return contentDirection === 'rtl' ? 'right' : 'left';
+    return direction === 'rtl' ? 'right' : 'left';
   }
@@ -82,3 +82,3 @@
     if (scroll === 'y') return 'bottom';
-    return contentDirection === 'rtl' ? 'left' : 'right';
+    return direction === 'rtl' ? 'left' : 'right';
   }
@@ -96,4 +96,54 @@
 
+function map(value, iStart, iStop, oStart, oStop) {
+  return oStart + (oStop - oStart) * ((value - iStart) / (iStop - iStart));
+}
+function mathAbs(n) {
+  return Math.abs(n);
+}
+function mathSign(n) {
+  return !n ? 0 : n / mathAbs(n);
+}
+function deltaAbs(valueB, valueA) {
+  return mathAbs(valueB - valueA);
+}
+function factorAbs(valueB, valueA) {
+  if (valueB === 0 || valueA === 0) return 0;
+  if (mathAbs(valueB) <= mathAbs(valueA)) return 0;
+  var diff = deltaAbs(mathAbs(valueB), mathAbs(valueA));
+  return mathAbs(diff / valueB);
+}
+function roundToDecimals(decimalPoints) {
+  var pow = Math.pow(10, decimalPoints);
+  return function (n) {
+    return Math.round(n * pow) / pow;
+  };
+}
+function debounce(callback, time) {
+  var timeout = 0;
+  return function () {
+    window.clearTimeout(timeout);
+    timeout = window.setTimeout(callback, time) || 0;
+  };
+}
+function arrayGroup(array, size) {
+  var groups = [];
+
+  for (var i = 0; i < array.length; i += size) {
+    groups.push(array.slice(i, i + size));
+  }
+
+  return groups;
+}
+function arrayKeys(array) {
+  return Object.keys(array).map(Number);
+}
+function arrayLast(array) {
+  return array[arrayLastIndex(array)];
+}
+function arrayLastIndex(array) {
+  return Math.max(0, array.length - 1);
+}
+
 function Limit(min, max) {
-  var length = Math.abs(min - max);
+  var length = mathAbs(min - max);
 
@@ -123,6 +173,6 @@ function reachedMin(n) {
   var self = {
-    constrain: constrain,
     length: length,
     max: max,
     min: min,
+    constrain: constrain,
     reachedAny: reachedAny,
@@ -145,3 +195,3 @@ reachedMax: reachedMax,
   function withinLimit(n) {
-    return !loop ? constrain(n) : Math.abs((loopEnd + n) % loopEnd);
+    return !loop ? constrain(n) : mathAbs((loopEnd + n) % loopEnd);
   }
@@ -180,3 +230,3 @@
 
-  function applyTo(n) {
+  function apply(n) {
     return n * sign;
@@ -186,3 +236,3 @@ }
   var self = {
-    applyTo: applyTo
+    apply: apply
   };
@@ -274,55 +324,5 @@ return self;
 
-function map(value, iStart, iStop, oStart, oStop) {
-  return oStart + (oStop - oStart) * ((value - iStart) / (iStop - iStart));
-}
-function mathSign(n) {
-  return !n ? 0 : n / Math.abs(n);
-}
-function deltaAbs(valueB, valueA) {
-  return Math.abs(valueB - valueA);
-}
-function factorAbs(valueB, valueA) {
-  if (valueB === 0 || valueA === 0) return 0;
-  if (Math.abs(valueB) <= Math.abs(valueA)) return 0;
-  var diff = deltaAbs(Math.abs(valueB), Math.abs(valueA));
-  return Math.abs(diff / valueB);
-}
-function roundToDecimals(decimalPoints) {
-  var pow = Math.pow(10, decimalPoints);
-  return function (n) {
-    return Math.round(n * pow) / pow;
-  };
-}
-function debounce(callback, time) {
-  var timeout = 0;
-  return function () {
-    window.clearTimeout(timeout);
-    timeout = window.setTimeout(callback, time) || 0;
-  };
-}
-function groupArray(array, size) {
-  var groups = [];
-
-  for (var i = 0; i < array.length; i += size) {
-    groups.push(array.slice(i, i + size));
-  }
-
-  return groups;
-}
-function arrayKeys(array) {
-  return Object.keys(array).map(Number);
-}
-function arrayLast(array) {
-  return array[lastIndex(array)];
-}
-function lastIndex(array) {
-  return Math.max(0, array.length - 1);
-}
-
 function DragHandler(axis, direction, rootNode, target, dragFree, dragTracker, location, animation, scrollTo, scrollBody, scrollTarget, index, events, loop, skipSnaps) {
-  var scrollAxis = axis.scroll,
-      crossAxis = axis.cross;
+  var crossAxis = axis.cross;
   var focusNodes = ['INPUT', 'SELECT', 'TEXTAREA'];
-  var startScroll = Vector1D(0);
-  var startCross = Vector1D(0);
   var dragStartPoint = Vector1D(0);
@@ -332,8 +332,8 @@ var activationEvents = EventStore();
   var snapForceBoost = {
-    mouse: 2.5,
-    touch: 3.5
+    mouse: 300,
+    touch: 400
   };
   var freeForceBoost = {
-    mouse: 5,
-    touch: 7
+    mouse: 500,
+    touch: 600
   };
@@ -343,2 +343,4 @@ var baseSpeed = dragFree ? 5 : 16;
   var dragThreshold = 20;
+  var startScroll = 0;
+  var startCross = 0;
   var pointerIsDown = false;
@@ -383,4 +385,4 @@ var preventScroll = false;
     var baseForce = scrollTarget.byDistance(force, !dragFree).distance;
-    if (dragFree || Math.abs(force) < dragThreshold) return baseForce;
-    if (!loop && isEdge) return baseForce * 0.6;
+    if (dragFree || mathAbs(force) < dragThreshold) return baseForce;
+    if (!loop && isEdge) return baseForce * 0.4;
     if (skipSnaps && targetChanged) return baseForce * 0.5;
@@ -403,4 +405,4 @@ return scrollTarget.byIndex(next.get(), 0).distance;
     addInteractionEvents();
-    startScroll.set(dragTracker.readPoint(evt, scrollAxis));
-    startCross.set(dragTracker.readPoint(evt, crossAxis));
+    startScroll = dragTracker.readPoint(evt);
+    startCross = dragTracker.readPoint(evt, crossAxis);
     events.emit('pointerDown');
@@ -413,9 +415,9 @@ if (clearPreventClick) preventClick = false;
     if (!preventScroll && !isMouse) {
-      if (!evt.cancelable) return up();
-      var moveScroll = dragTracker.readPoint(evt, scrollAxis).get();
-      var moveCross = dragTracker.readPoint(evt, crossAxis).get();
-      var diffScroll = deltaAbs(moveScroll, startScroll.get());
-      var diffCross = deltaAbs(moveCross, startCross.get());
+      if (!evt.cancelable) return up(evt);
+      var lastScroll = dragTracker.readPoint(evt);
+      var lastCross = dragTracker.readPoint(evt, crossAxis);
+      var diffScroll = deltaAbs(lastScroll, startScroll);
+      var diffCross = deltaAbs(lastCross, startCross);
       preventScroll = diffScroll > diffCross;
-      if (!preventScroll && !preventClick) return up();
+      if (!preventScroll && !preventClick) return up(evt);
     }
@@ -426,15 +428,15 @@
     animation.start();
-    target.add(direction.applyTo(diff));
+    target.add(direction.apply(diff));
     evt.preventDefault();
   }
 
-  function up() {
+  function up(evt) {
     var currentLocation = scrollTarget.byDistance(0, false);
     var targetChanged = currentLocation.index !== index.get();
-    var rawForce = dragTracker.pointerUp() * forceBoost();
-    var force = allowedForce(direction.applyTo(rawForce), targetChanged);
+    var rawForce = dragTracker.pointerUp(evt) * forceBoost();
+    var force = allowedForce(direction.apply(rawForce), targetChanged);
     var forceFactor = factorAbs(rawForce, force);
     var isMoving = deltaAbs(target.get(), dragStartPoint.get()) >= 0.5;
     var isVigorous = targetChanged && forceFactor > 0.75;
-    var isBelowThreshold = Math.abs(rawForce) < dragThreshold;
+    var isBelowThreshold = mathAbs(rawForce) < dragThreshold;
     var speed = isVigorous ? 10 : baseSpeed;
@@ -474,63 +476,45 @@ var mass = isVigorous ? baseMass + 2.5 * forceFactor : baseMass;
 function DragTracker(axis, pxToPercent) {
-  var scrollAxis = axis.scroll;
-  var coords = {
-    x: 'clientX',
-    y: 'clientY'
-  };
-  var startDrag = Vector1D(0);
-  var diffDrag = Vector1D(0);
-  var lastDrag = Vector1D(0);
-  var pointValue = Vector1D(0);
-  var trackInterval = 10;
-  var trackLength = 5;
-  var trackTime = 100;
-  var trackPoints = [];
-  var lastMoveTime = new Date().getTime();
-  var isMouse = false;
+  var logInterval = 170;
+  var startEvent;
+  var lastEvent;
 
-  function readPoint(evt, type) {
-    isMouse = !evt.touches;
-    var c = coords[type];
-    var value = isMouse ? evt[c] : evt.touches[0][c];
-    return pointValue.set(value);
+  function isTouchEvent(evt) {
+    return typeof TouchEvent !== 'undefined' && evt instanceof TouchEvent;
   }
 
+  function readTime(evt) {
+    return evt.timeStamp;
+  }
+
+  function readPoint(evt, evtAxis) {
+    var property = evtAxis || axis.scroll;
+    var coord = "client" + (property === 'x' ? 'X' : 'Y');
+    return (isTouchEvent(evt) ? evt.touches[0] : evt)[coord];
+  }
+
   function pointerDown(evt) {
-    var point = readPoint(evt, scrollAxis);
-    startDrag.set(point);
-    lastDrag.set(point);
-    return pxToPercent.measure(startDrag.get());
+    startEvent = evt;
+    lastEvent = evt;
+    return pxToPercent.measure(readPoint(evt));
   }
 
   function pointerMove(evt) {
-    var point = readPoint(evt, scrollAxis);
-    var nowTime = new Date().getTime();
-    var diffTime = nowTime - lastMoveTime;
-
-    if (diffTime >= trackInterval) {
-      if (diffTime >= trackTime) trackPoints = [];
-      trackPoints.push(point.get());
-      lastMoveTime = nowTime;
-    }
-
-    diffDrag.set(point).subtract(lastDrag);
-    lastDrag.set(point);
-    return pxToPercent.measure(diffDrag.get());
+    var diff = readPoint(evt) - readPoint(lastEvent);
+    var expired = readTime(evt) - readTime(startEvent) > logInterval;
+    lastEvent = evt;
+    if (expired) startEvent = evt;
+    return pxToPercent.measure(diff);
   }
 
-  function pointerUp() {
-    var nowTime = new Date().getTime();
-    var diffTime = nowTime - lastMoveTime;
-    var currentPoint = lastDrag.get();
-    var force = trackPoints.slice(-trackLength).map(function (trackPoint) {
-      return currentPoint - trackPoint;
-    }).sort(function (p1, p2) {
-      return Math.abs(p1) < Math.abs(p2) ? 1 : -1;
-    })[0];
-    lastDrag.set(diffTime > trackTime || !force ? 0 : force);
-    trackPoints = [];
-    return pxToPercent.measure(lastDrag.get());
+  function pointerUp(evt) {
+    var diffDrag = readPoint(lastEvent) - readPoint(startEvent);
+    var diffTime = readTime(evt) - readTime(startEvent);
+    var expired = readTime(evt) - readTime(lastEvent) > logInterval;
+    var force = diffDrag / diffTime;
+    var isFlick = diffTime && !expired && mathAbs(force) > 0.1;
+    return isFlick ? pxToPercent.measure(force) : 0;
   }
 
   var self = {
+    isTouchEvent: isTouchEvent,
     pointerDown: pointerDown,
@@ -632,2 +616,4 @@ pointerMove: pointerMove,
   var pullBackThreshold = 10;
+  var edgeOffsetTolerance = 50;
+  var maxFriction = 0.85;
   var disabled = false;
@@ -644,7 +630,9 @@
     if (!shouldConstrain()) return;
-    var friction = pointerDown ? 0.7 : 0.45;
+    var edge = limit.reachedMin(location.get()) ? 'min' : 'max';
+    var diffToEdge = mathAbs(limit[edge] - location.get());
     var diffToTarget = target.get() - location.get();
+    var friction = Math.min(diffToEdge / edgeOffsetTolerance, maxFriction);
     target.subtract(diffToTarget * friction);
 
-    if (!pointerDown && Math.abs(diffToTarget) < pullBackThreshold) {
+    if (!pointerDown && mathAbs(diffToTarget) < pullBackThreshold) {
       target.set(limit.constrain(target.get()));
@@ -763,5 +751,5 @@ scrollBody.useSpeed(10).useMass(3);
   function measureSizes() {
-    return groupArray(slideRects, slidesToScroll).map(function (rects) {
+    return arrayGroup(slideRects, slidesToScroll).map(function (rects) {
       return arrayLast(rects)[endEdge] - rects[0][startEdge];
-    }).map(pxToPercent.measure).map(Math.abs);
+    }).map(pxToPercent.measure).map(mathAbs);
   }
@@ -773,3 +761,3 @@
     }).map(pxToPercent.measure).map(function (snap) {
-      return -Math.abs(snap);
+      return -mathAbs(snap);
     });
@@ -779,3 +767,3 @@ }
   function measureAligned() {
-    var groupedSnaps = groupArray(snaps, slidesToScroll).map(function (g) {
+    var groupedSnaps = arrayGroup(snaps, slidesToScroll).map(function (g) {
       return g[0];
@@ -802,3 +790,3 @@ });
   function minDistance(d1, d2) {
-    return Math.abs(d1) < Math.abs(d2) ? d1 : d2;
+    return mathAbs(d1) < mathAbs(d2) ? d1 : d2;
   }
@@ -818,3 +806,3 @@
     }).sort(function (d1, d2) {
-      return Math.abs(d1.diff) - Math.abs(d2.diff);
+      return mathAbs(d1.diff) - mathAbs(d2.diff);
     });
@@ -835,3 +823,3 @@ var index = ascDiffsToSnaps[0].index;
     var shortest = minDistance(t1, direction === 1 ? t2 : t3);
-    return Math.abs(shortest) * direction;
+    return mathAbs(shortest) * direction;
   }
@@ -932,3 +920,3 @@
     var offset = isStartEdge ? -contentSize : contentSize;
-    var slideBounds = slidesInView.findSlideBounds(offset);
+    var slideBounds = slidesInView.findSlideBounds([offset]);
     return indexes.map(function (index) {
@@ -942,3 +930,3 @@ var initial = isStartEdge ? 0 : -contentSize;
 
-      var getTarget = function getTarget() {
+      var getTarget = function () {
         return scrollLocation.get() > point ? initial : altered;
@@ -1008,23 +996,30 @@ };
 
-function SlidesInView(viewSize, contentSize, slideSizes, snaps, loop, inViewThreshold) {
-  var threshold = Math.min(Math.max(inViewThreshold, 0.01), 0.99);
-  var offsets = loop ? [0, contentSize, -contentSize] : [0];
-  var slideBounds = offsets.reduce(function (a, offset) {
-    return a.concat(findSlideBounds(offset, threshold));
-  }, []);
+function SlidesInView(viewSize, contentSize, slideSizes, snaps, limit, loop, inViewThreshold) {
+  var removeOffset = limit.removeOffset,
+      constrain = limit.constrain;
+  var cachedThreshold = Math.min(Math.max(inViewThreshold, 0.01), 0.99);
+  var cachedOffsets = loop ? [0, contentSize, -contentSize] : [0];
+  var cachedBounds = findSlideBounds(cachedOffsets, cachedThreshold);
 
-  function findSlideBounds(offset, threshold) {
+  function findSlideBounds(offsets, threshold) {
+    var slideOffsets = offsets || cachedOffsets;
+    var slideThreshold = threshold || 0;
     var thresholds = slideSizes.map(function (s) {
-      return s * (threshold || 0);
+      return s * slideThreshold;
     });
-    return snaps.map(function (snap, index) {
-      return {
-        start: snap - slideSizes[index] + thresholds[index] + offset,
-        end: snap + viewSize - thresholds[index] + offset,
-        index: index
-      };
-    });
+    return slideOffsets.reduce(function (list, offset) {
+      var bounds = snaps.map(function (snap, index) {
+        return {
+          start: snap - slideSizes[index] + thresholds[index] + offset,
+          end: snap + viewSize - thresholds[index] + offset,
+          index: index
+        };
+      });
+      return list.concat(bounds);
+    }, []);
   }
 
-  function check(location) {
+  function check(location, bounds) {
+    var limitedLocation = loop ? removeOffset(location) : constrain(location);
+    var slideBounds = bounds || cachedBounds;
     return slideBounds.reduce(function (list, slideBound) {
@@ -1035,3 +1030,3 @@ var index = slideBound.index,
       var inList = list.indexOf(index) !== -1;
-      var inView = start < location && end > location;
+      var inView = start < limitedLocation && end > limitedLocation;
       return !inList && inView ? list.concat([index]) : list;
@@ -1058,3 +1053,3 @@ }, []);
     return slideRects.map(function (rect, index, rects) {
-      var isLast = index === lastIndex(rects);
+      var isLast = index === arrayLastIndex(rects);
       var style = window.getComputedStyle(arrayLast(slides));
@@ -1064,3 +1059,3 @@ var endGap = parseFloat(style.getPropertyValue("margin-" + endEdge));
       return rects[index + 1][startEdge] - rect[startEdge];
-    }).map(pxToPercent.measure).map(Math.abs);
+    }).map(pxToPercent.measure).map(mathAbs);
   }
@@ -1076,4 +1071,4 @@
 function Translate(axis, direction, container) {
+  var translate = axis.scroll === 'x' ? x : y;
   var containerStyle = container.style;
-  var translate = axis.scroll === 'x' ? x : y;
   var disabled = false;
@@ -1091,3 +1086,3 @@
     if (disabled) return;
-    containerStyle.transform = translate(direction.applyTo(target.get()));
+    containerStyle.transform = translate(direction.apply(target.get()));
   }
@@ -1149,7 +1144,7 @@
 
-  var index = Counter(lastIndex(scrollSnaps), startIndex, loop);
+  var index = Counter(arrayLastIndex(scrollSnaps), startIndex, loop);
   var indexPrevious = index.clone();
   var slideIndexes = arrayKeys(slides); // Draw
 
-  var update = function update() {
+  var update = function () {
     if (!loop) engine.scrollBounds.constrain(engine.dragHandler.pointerDown());
@@ -1185,3 +1180,3 @@ engine.scrollBody.seek(target).update();
   var scrollTo = ScrollTo(animation, index, indexPrevious, scrollTarget, target, events);
-  var slidesInView = SlidesInView(viewSize, contentSize, slideSizes, snaps, loop, inViewThreshold); // DragHandler
+  var slidesInView = SlidesInView(viewSize, contentSize, slideSizes, snaps, limit, loop, inViewThreshold); // DragHandler
 
@@ -1191,2 +1186,4 @@ var dragHandler = DragHandler(axis, direction, root, target, dragFree, DragTracker(axis, pxToPercent), location, animation, scrollTo, scrollBody, scrollTarget, index, events, loop, skipSnaps); // Slider
   var engine = {
+    containerRect: containerRect,
+    slideRects: slideRects,
     animation: animation,
@@ -1193,0 +1190,0 @@ axis: axis,

embla-carousel.js

@@ -63,3 +63,3 @@ 'use strict';
 
-function Axis(axis, contentDirection) {
+function Axis(axis, direction) {
   var scroll = axis === 'y' ? 'y' : 'x';
@@ -78,3 +78,3 @@ var cross = axis === 'y' ? 'x' : 'y';
     if (scroll === 'y') return 'top';
-    return contentDirection === 'rtl' ? 'right' : 'left';
+    return direction === 'rtl' ? 'right' : 'left';
   }
@@ -84,3 +84,3 @@
     if (scroll === 'y') return 'bottom';
-    return contentDirection === 'rtl' ? 'left' : 'right';
+    return direction === 'rtl' ? 'left' : 'right';
   }
@@ -98,4 +98,54 @@
 
+function map(value, iStart, iStop, oStart, oStop) {
+  return oStart + (oStop - oStart) * ((value - iStart) / (iStop - iStart));
+}
+function mathAbs(n) {
+  return Math.abs(n);
+}
+function mathSign(n) {
+  return !n ? 0 : n / mathAbs(n);
+}
+function deltaAbs(valueB, valueA) {
+  return mathAbs(valueB - valueA);
+}
+function factorAbs(valueB, valueA) {
+  if (valueB === 0 || valueA === 0) return 0;
+  if (mathAbs(valueB) <= mathAbs(valueA)) return 0;
+  var diff = deltaAbs(mathAbs(valueB), mathAbs(valueA));
+  return mathAbs(diff / valueB);
+}
+function roundToDecimals(decimalPoints) {
+  var pow = Math.pow(10, decimalPoints);
+  return function (n) {
+    return Math.round(n * pow) / pow;
+  };
+}
+function debounce(callback, time) {
+  var timeout = 0;
+  return function () {
+    window.clearTimeout(timeout);
+    timeout = window.setTimeout(callback, time) || 0;
+  };
+}
+function arrayGroup(array, size) {
+  var groups = [];
+
+  for (var i = 0; i < array.length; i += size) {
+    groups.push(array.slice(i, i + size));
+  }
+
+  return groups;
+}
+function arrayKeys(array) {
+  return Object.keys(array).map(Number);
+}
+function arrayLast(array) {
+  return array[arrayLastIndex(array)];
+}
+function arrayLastIndex(array) {
+  return Math.max(0, array.length - 1);
+}
+
 function Limit(min, max) {
-  var length = Math.abs(min - max);
+  var length = mathAbs(min - max);
 
@@ -125,6 +175,6 @@ function reachedMin(n) {
   var self = {
-    constrain: constrain,
     length: length,
     max: max,
     min: min,
+    constrain: constrain,
     reachedAny: reachedAny,
@@ -147,3 +197,3 @@ reachedMax: reachedMax,
   function withinLimit(n) {
-    return !loop ? constrain(n) : Math.abs((loopEnd + n) % loopEnd);
+    return !loop ? constrain(n) : mathAbs((loopEnd + n) % loopEnd);
   }
@@ -182,3 +232,3 @@
 
-  function applyTo(n) {
+  function apply(n) {
     return n * sign;
@@ -188,3 +238,3 @@ }
   var self = {
-    applyTo: applyTo
+    apply: apply
   };
@@ -276,55 +326,5 @@ return self;
 
-function map(value, iStart, iStop, oStart, oStop) {
-  return oStart + (oStop - oStart) * ((value - iStart) / (iStop - iStart));
-}
-function mathSign(n) {
-  return !n ? 0 : n / Math.abs(n);
-}
-function deltaAbs(valueB, valueA) {
-  return Math.abs(valueB - valueA);
-}
-function factorAbs(valueB, valueA) {
-  if (valueB === 0 || valueA === 0) return 0;
-  if (Math.abs(valueB) <= Math.abs(valueA)) return 0;
-  var diff = deltaAbs(Math.abs(valueB), Math.abs(valueA));
-  return Math.abs(diff / valueB);
-}
-function roundToDecimals(decimalPoints) {
-  var pow = Math.pow(10, decimalPoints);
-  return function (n) {
-    return Math.round(n * pow) / pow;
-  };
-}
-function debounce(callback, time) {
-  var timeout = 0;
-  return function () {
-    window.clearTimeout(timeout);
-    timeout = window.setTimeout(callback, time) || 0;
-  };
-}
-function groupArray(array, size) {
-  var groups = [];
-
-  for (var i = 0; i < array.length; i += size) {
-    groups.push(array.slice(i, i + size));
-  }
-
-  return groups;
-}
-function arrayKeys(array) {
-  return Object.keys(array).map(Number);
-}
-function arrayLast(array) {
-  return array[lastIndex(array)];
-}
-function lastIndex(array) {
-  return Math.max(0, array.length - 1);
-}
-
 function DragHandler(axis, direction, rootNode, target, dragFree, dragTracker, location, animation, scrollTo, scrollBody, scrollTarget, index, events, loop, skipSnaps) {
-  var scrollAxis = axis.scroll,
-      crossAxis = axis.cross;
+  var crossAxis = axis.cross;
   var focusNodes = ['INPUT', 'SELECT', 'TEXTAREA'];
-  var startScroll = Vector1D(0);
-  var startCross = Vector1D(0);
   var dragStartPoint = Vector1D(0);
@@ -334,8 +334,8 @@ var activationEvents = EventStore();
   var snapForceBoost = {
-    mouse: 2.5,
-    touch: 3.5
+    mouse: 300,
+    touch: 400
   };
   var freeForceBoost = {
-    mouse: 5,
-    touch: 7
+    mouse: 500,
+    touch: 600
   };
@@ -345,2 +345,4 @@ var baseSpeed = dragFree ? 5 : 16;
   var dragThreshold = 20;
+  var startScroll = 0;
+  var startCross = 0;
   var pointerIsDown = false;
@@ -385,4 +387,4 @@ var preventScroll = false;
     var baseForce = scrollTarget.byDistance(force, !dragFree).distance;
-    if (dragFree || Math.abs(force) < dragThreshold) return baseForce;
-    if (!loop && isEdge) return baseForce * 0.6;
+    if (dragFree || mathAbs(force) < dragThreshold) return baseForce;
+    if (!loop && isEdge) return baseForce * 0.4;
     if (skipSnaps && targetChanged) return baseForce * 0.5;
@@ -405,4 +407,4 @@ return scrollTarget.byIndex(next.get(), 0).distance;
     addInteractionEvents();
-    startScroll.set(dragTracker.readPoint(evt, scrollAxis));
-    startCross.set(dragTracker.readPoint(evt, crossAxis));
+    startScroll = dragTracker.readPoint(evt);
+    startCross = dragTracker.readPoint(evt, crossAxis);
     events.emit('pointerDown');
@@ -415,9 +417,9 @@ if (clearPreventClick) preventClick = false;
     if (!preventScroll && !isMouse) {
-      if (!evt.cancelable) return up();
-      var moveScroll = dragTracker.readPoint(evt, scrollAxis).get();
-      var moveCross = dragTracker.readPoint(evt, crossAxis).get();
-      var diffScroll = deltaAbs(moveScroll, startScroll.get());
-      var diffCross = deltaAbs(moveCross, startCross.get());
+      if (!evt.cancelable) return up(evt);
+      var lastScroll = dragTracker.readPoint(evt);
+      var lastCross = dragTracker.readPoint(evt, crossAxis);
+      var diffScroll = deltaAbs(lastScroll, startScroll);
+      var diffCross = deltaAbs(lastCross, startCross);
       preventScroll = diffScroll > diffCross;
-      if (!preventScroll && !preventClick) return up();
+      if (!preventScroll && !preventClick) return up(evt);
     }
@@ -428,15 +430,15 @@
     animation.start();
-    target.add(direction.applyTo(diff));
+    target.add(direction.apply(diff));
     evt.preventDefault();
   }
 
-  function up() {
+  function up(evt) {
     var currentLocation = scrollTarget.byDistance(0, false);
     var targetChanged = currentLocation.index !== index.get();
-    var rawForce = dragTracker.pointerUp() * forceBoost();
-    var force = allowedForce(direction.applyTo(rawForce), targetChanged);
+    var rawForce = dragTracker.pointerUp(evt) * forceBoost();
+    var force = allowedForce(direction.apply(rawForce), targetChanged);
     var forceFactor = factorAbs(rawForce, force);
     var isMoving = deltaAbs(target.get(), dragStartPoint.get()) >= 0.5;
     var isVigorous = targetChanged && forceFactor > 0.75;
-    var isBelowThreshold = Math.abs(rawForce) < dragThreshold;
+    var isBelowThreshold = mathAbs(rawForce) < dragThreshold;
     var speed = isVigorous ? 10 : baseSpeed;
@@ -476,63 +478,45 @@ var mass = isVigorous ? baseMass + 2.5 * forceFactor : baseMass;
 function DragTracker(axis, pxToPercent) {
-  var scrollAxis = axis.scroll;
-  var coords = {
-    x: 'clientX',
-    y: 'clientY'
-  };
-  var startDrag = Vector1D(0);
-  var diffDrag = Vector1D(0);
-  var lastDrag = Vector1D(0);
-  var pointValue = Vector1D(0);
-  var trackInterval = 10;
-  var trackLength = 5;
-  var trackTime = 100;
-  var trackPoints = [];
-  var lastMoveTime = new Date().getTime();
-  var isMouse = false;
+  var logInterval = 170;
+  var startEvent;
+  var lastEvent;
 
-  function readPoint(evt, type) {
-    isMouse = !evt.touches;
-    var c = coords[type];
-    var value = isMouse ? evt[c] : evt.touches[0][c];
-    return pointValue.set(value);
+  function isTouchEvent(evt) {
+    return typeof TouchEvent !== 'undefined' && evt instanceof TouchEvent;
   }
 
+  function readTime(evt) {
+    return evt.timeStamp;
+  }
+
+  function readPoint(evt, evtAxis) {
+    var property = evtAxis || axis.scroll;
+    var coord = "client" + (property === 'x' ? 'X' : 'Y');
+    return (isTouchEvent(evt) ? evt.touches[0] : evt)[coord];
+  }
+
   function pointerDown(evt) {
-    var point = readPoint(evt, scrollAxis);
-    startDrag.set(point);
-    lastDrag.set(point);
-    return pxToPercent.measure(startDrag.get());
+    startEvent = evt;
+    lastEvent = evt;
+    return pxToPercent.measure(readPoint(evt));
   }
 
   function pointerMove(evt) {
-    var point = readPoint(evt, scrollAxis);
-    var nowTime = new Date().getTime();
-    var diffTime = nowTime - lastMoveTime;
-
-    if (diffTime >= trackInterval) {
-      if (diffTime >= trackTime) trackPoints = [];
-      trackPoints.push(point.get());
-      lastMoveTime = nowTime;
-    }
-
-    diffDrag.set(point).subtract(lastDrag);
-    lastDrag.set(point);
-    return pxToPercent.measure(diffDrag.get());
+    var diff = readPoint(evt) - readPoint(lastEvent);
+    var expired = readTime(evt) - readTime(startEvent) > logInterval;
+    lastEvent = evt;
+    if (expired) startEvent = evt;
+    return pxToPercent.measure(diff);
   }
 
-  function pointerUp() {
-    var nowTime = new Date().getTime();
-    var diffTime = nowTime - lastMoveTime;
-    var currentPoint = lastDrag.get();
-    var force = trackPoints.slice(-trackLength).map(function (trackPoint) {
-      return currentPoint - trackPoint;
-    }).sort(function (p1, p2) {
-      return Math.abs(p1) < Math.abs(p2) ? 1 : -1;
-    })[0];
-    lastDrag.set(diffTime > trackTime || !force ? 0 : force);
-    trackPoints = [];
-    return pxToPercent.measure(lastDrag.get());
+  function pointerUp(evt) {
+    var diffDrag = readPoint(lastEvent) - readPoint(startEvent);
+    var diffTime = readTime(evt) - readTime(startEvent);
+    var expired = readTime(evt) - readTime(lastEvent) > logInterval;
+    var force = diffDrag / diffTime;
+    var isFlick = diffTime && !expired && mathAbs(force) > 0.1;
+    return isFlick ? pxToPercent.measure(force) : 0;
   }
 
   var self = {
+    isTouchEvent: isTouchEvent,
     pointerDown: pointerDown,
@@ -634,2 +618,4 @@ pointerMove: pointerMove,
   var pullBackThreshold = 10;
+  var edgeOffsetTolerance = 50;
+  var maxFriction = 0.85;
   var disabled = false;
@@ -646,7 +632,9 @@
     if (!shouldConstrain()) return;
-    var friction = pointerDown ? 0.7 : 0.45;
+    var edge = limit.reachedMin(location.get()) ? 'min' : 'max';
+    var diffToEdge = mathAbs(limit[edge] - location.get());
     var diffToTarget = target.get() - location.get();
+    var friction = Math.min(diffToEdge / edgeOffsetTolerance, maxFriction);
     target.subtract(diffToTarget * friction);
 
-    if (!pointerDown && Math.abs(diffToTarget) < pullBackThreshold) {
+    if (!pointerDown && mathAbs(diffToTarget) < pullBackThreshold) {
       target.set(limit.constrain(target.get()));
@@ -765,5 +753,5 @@ scrollBody.useSpeed(10).useMass(3);
   function measureSizes() {
-    return groupArray(slideRects, slidesToScroll).map(function (rects) {
+    return arrayGroup(slideRects, slidesToScroll).map(function (rects) {
       return arrayLast(rects)[endEdge] - rects[0][startEdge];
-    }).map(pxToPercent.measure).map(Math.abs);
+    }).map(pxToPercent.measure).map(mathAbs);
   }
@@ -775,3 +763,3 @@
     }).map(pxToPercent.measure).map(function (snap) {
-      return -Math.abs(snap);
+      return -mathAbs(snap);
     });
@@ -781,3 +769,3 @@ }
   function measureAligned() {
-    var groupedSnaps = groupArray(snaps, slidesToScroll).map(function (g) {
+    var groupedSnaps = arrayGroup(snaps, slidesToScroll).map(function (g) {
       return g[0];
@@ -804,3 +792,3 @@ });
   function minDistance(d1, d2) {
-    return Math.abs(d1) < Math.abs(d2) ? d1 : d2;
+    return mathAbs(d1) < mathAbs(d2) ? d1 : d2;
   }
@@ -820,3 +808,3 @@
     }).sort(function (d1, d2) {
-      return Math.abs(d1.diff) - Math.abs(d2.diff);
+      return mathAbs(d1.diff) - mathAbs(d2.diff);
     });
@@ -837,3 +825,3 @@ var index = ascDiffsToSnaps[0].index;
     var shortest = minDistance(t1, direction === 1 ? t2 : t3);
-    return Math.abs(shortest) * direction;
+    return mathAbs(shortest) * direction;
   }
@@ -934,3 +922,3 @@
     var offset = isStartEdge ? -contentSize : contentSize;
-    var slideBounds = slidesInView.findSlideBounds(offset);
+    var slideBounds = slidesInView.findSlideBounds([offset]);
     return indexes.map(function (index) {
@@ -944,3 +932,3 @@ var initial = isStartEdge ? 0 : -contentSize;
 
-      var getTarget = function getTarget() {
+      var getTarget = function () {
         return scrollLocation.get() > point ? initial : altered;
@@ -1010,23 +998,30 @@ };
 
-function SlidesInView(viewSize, contentSize, slideSizes, snaps, loop, inViewThreshold) {
-  var threshold = Math.min(Math.max(inViewThreshold, 0.01), 0.99);
-  var offsets = loop ? [0, contentSize, -contentSize] : [0];
-  var slideBounds = offsets.reduce(function (a, offset) {
-    return a.concat(findSlideBounds(offset, threshold));
-  }, []);
+function SlidesInView(viewSize, contentSize, slideSizes, snaps, limit, loop, inViewThreshold) {
+  var removeOffset = limit.removeOffset,
+      constrain = limit.constrain;
+  var cachedThreshold = Math.min(Math.max(inViewThreshold, 0.01), 0.99);
+  var cachedOffsets = loop ? [0, contentSize, -contentSize] : [0];
+  var cachedBounds = findSlideBounds(cachedOffsets, cachedThreshold);
 
-  function findSlideBounds(offset, threshold) {
+  function findSlideBounds(offsets, threshold) {
+    var slideOffsets = offsets || cachedOffsets;
+    var slideThreshold = threshold || 0;
     var thresholds = slideSizes.map(function (s) {
-      return s * (threshold || 0);
+      return s * slideThreshold;
     });
-    return snaps.map(function (snap, index) {
-      return {
-        start: snap - slideSizes[index] + thresholds[index] + offset,
-        end: snap + viewSize - thresholds[index] + offset,
-        index: index
-      };
-    });
+    return slideOffsets.reduce(function (list, offset) {
+      var bounds = snaps.map(function (snap, index) {
+        return {
+          start: snap - slideSizes[index] + thresholds[index] + offset,
+          end: snap + viewSize - thresholds[index] + offset,
+          index: index
+        };
+      });
+      return list.concat(bounds);
+    }, []);
   }
 
-  function check(location) {
+  function check(location, bounds) {
+    var limitedLocation = loop ? removeOffset(location) : constrain(location);
+    var slideBounds = bounds || cachedBounds;
     return slideBounds.reduce(function (list, slideBound) {
@@ -1037,3 +1032,3 @@ var index = slideBound.index,
       var inList = list.indexOf(index) !== -1;
-      var inView = start < location && end > location;
+      var inView = start < limitedLocation && end > limitedLocation;
       return !inList && inView ? list.concat([index]) : list;
@@ -1060,3 +1055,3 @@ }, []);
     return slideRects.map(function (rect, index, rects) {
-      var isLast = index === lastIndex(rects);
+      var isLast = index === arrayLastIndex(rects);
       var style = window.getComputedStyle(arrayLast(slides));
@@ -1066,3 +1061,3 @@ var endGap = parseFloat(style.getPropertyValue("margin-" + endEdge));
       return rects[index + 1][startEdge] - rect[startEdge];
-    }).map(pxToPercent.measure).map(Math.abs);
+    }).map(pxToPercent.measure).map(mathAbs);
   }
@@ -1078,4 +1073,4 @@
 function Translate(axis, direction, container) {
+  var translate = axis.scroll === 'x' ? x : y;
   var containerStyle = container.style;
-  var translate = axis.scroll === 'x' ? x : y;
   var disabled = false;
@@ -1093,3 +1088,3 @@
     if (disabled) return;
-    containerStyle.transform = translate(direction.applyTo(target.get()));
+    containerStyle.transform = translate(direction.apply(target.get()));
   }
@@ -1151,7 +1146,7 @@
 
-  var index = Counter(lastIndex(scrollSnaps), startIndex, loop);
+  var index = Counter(arrayLastIndex(scrollSnaps), startIndex, loop);
   var indexPrevious = index.clone();
   var slideIndexes = arrayKeys(slides); // Draw
 
-  var update = function update() {
+  var update = function () {
     if (!loop) engine.scrollBounds.constrain(engine.dragHandler.pointerDown());
@@ -1187,3 +1182,3 @@ engine.scrollBody.seek(target).update();
   var scrollTo = ScrollTo(animation, index, indexPrevious, scrollTarget, target, events);
-  var slidesInView = SlidesInView(viewSize, contentSize, slideSizes, snaps, loop, inViewThreshold); // DragHandler
+  var slidesInView = SlidesInView(viewSize, contentSize, slideSizes, snaps, limit, loop, inViewThreshold); // DragHandler
 
@@ -1193,2 +1188,4 @@ var dragHandler = DragHandler(axis, direction, root, target, dragFree, DragTracker(axis, pxToPercent), location, animation, scrollTo, scrollBody, scrollTarget, index, events, loop, skipSnaps); // Slider
   var engine = {
+    containerRect: containerRect,
+    slideRects: slideRects,
     animation: animation,
@@ -1195,0 +1192,0 @@ axis: axis,

embla-carousel.umd.js

@@ -1,1 +0,1 @@
-!function(n,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(n="undefined"!=typeof globalThis?globalThis:n||self).EmblaCarousel=e()}(this,(function(){"use strict";function n(n,e){var t={start:function(){return 0},center:function(n){return r(n)/2},end:r};function r(n){return e-n}return{measure:function(r){return"number"==typeof n?e*Number(n):t[n](r)}}}function e(n,e){var t=Math.abs(n-e);function r(e){return e<n}function o(n){return n>e}function i(n){return r(n)||o(n)}return{constrain:function(t){return i(t)?r(t)?n:e:t},length:t,max:e,min:n,reachedAny:i,reachedMax:o,reachedMin:r,removeOffset:function(n){return t?n-t*Math.ceil((n-e)/t):n}}}function t(n,r,o){var i=e(0,n),u=i.min,a=i.constrain,c=n+1,s=d(r);function d(n){return o?Math.abs((c+n)%c):a(n)}function f(){return s}function l(n){return s=d(n),p}var p={add:function(n){return l(f()+n)},clone:function(){return t(n,f(),o)},get:f,set:l,min:u,max:n};return p}function r(){var n=[];var e={add:function(t,r,o,i){return void 0===i&&(i=!1),t.addEventListener(r,o,i),n.push((function(){return t.removeEventListener(r,o,i)})),e},removeAll:function(){return n=n.filter((function(n){return n()})),e}};return e}function o(n){var e=n;function t(n){return e/=n,o}function r(n){return"number"==typeof n?n:n.get()}var o={add:function(n){return e+=r(n),o},divide:t,get:function(){return e},multiply:function(n){return e*=n,o},normalize:function(){return 0!==e&&t(e),o},set:function(n){return e=r(n),o},subtract:function(n){return e-=r(n),o}};return o}function i(n){return n?n/Math.abs(n):0}function u(n,e){return Math.abs(n-e)}function a(n,e){for(var t=[],r=0;r<n.length;r+=e)t.push(n.slice(r,r+e));return t}function c(n){return Object.keys(n).map(Number)}function s(n){return n[d(n)]}function d(n){return Math.max(0,n.length-1)}function f(n,e,t,a,c,s,d,f,l,p,m,g,v,h,x){var b=n.scroll,y=n.cross,M=["INPUT","SELECT","TEXTAREA"],S=o(0),w=o(0),T=o(0),E=r(),A=r(),P={mouse:2.5,touch:3.5},B={mouse:5,touch:7},D=c?5:16,I=!1,O=!1,z=!1,L=!1;function k(n){if(!(L="mousedown"===n.type)||0===n.button){var e,r,o=u(a.get(),d.get())>=2,i=L||!o,c=(e=n.target,r=e.nodeName||"",!(M.indexOf(r)>-1)),f=o||L&&c;I=!0,s.pointerDown(n),T.set(a),a.set(d),p.useBaseMass().useSpeed(80),function(){var n=L?document:t;A.add(n,"touchmove",N).add(n,"touchend",C).add(n,"mousemove",N).add(n,"mouseup",C)}(),S.set(s.readPoint(n,b)),w.set(s.readPoint(n,y)),v.emit("pointerDown"),i&&(z=!1),f&&n.preventDefault()}}function N(n){if(!O&&!L){if(!n.cancelable)return C();var t=s.readPoint(n,b).get(),r=s.readPoint(n,y).get(),o=u(t,S.get()),i=u(r,w.get());if(!(O=o>i)&&!z)return C()}var c=s.pointerMove(n);!z&&c&&(z=!0),f.start(),a.add(e.applyTo(c)),n.preventDefault()}function C(){var n=m.byDistance(0,!1).index!==g.get(),t=s.pointerUp()*(c?B:P)[L?"mouse":"touch"],r=function(n,e){var 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package.json

 {
   "name": "embla-carousel",
-  "version": "6.0.2",
+  "version": "6.1.0",
   "author": "David Cetinkaya",
@@ -44,7 +44,2 @@ "description": "A lightweight carousel library with fluid motion and great swipe precision",
   "devDependencies": {
-    "@babel/core": "^7.13.15",
-    "@babel/preset-env": "^7.13.15",
-    "@babel/preset-typescript": "^7.13.0",
-    "@rollup/plugin-babel": "^5.3.0",
-    "@rollup/plugin-node-resolve": "^11.2.1",
     "@types/jest": "^26.0.22",
@@ -59,4 +54,2 @@ "@typescript-eslint/eslint-plugin": "^4.22.0",
     "rollup": "^2.45.2",
-    "rollup-plugin-terser": "^7.0.2",
-    "rollup-plugin-typescript2": "^0.30.0",
     "ts-jest": "^26.5.5",
@@ -63,0 +56,0 @@ "typescript": "^4.2.4"

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increased by0.45%

Dev dependency count

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decreased by-38.89%

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