fix

src/runtime/internal/animations.ts

@@ -2,10 +2,11 @@ import { run_transition } from './transitions';
 import { methodify, noop } from './utils';
 import { CssTransitionConfig } from 'svelte/transition';
 
-type AnimationFn = (node: Element, { from, to }: { from: DOMRect; to: DOMRect }, params: any) => CssTransitionConfig;
+type Rect = DOMRect | ClientRect;
+type AnimationFn = (node: Element, { from, to }: { from: Rect; to: Rect }, params: any) => CssTransitionConfig;
 
 export const run_animation = /*#__PURE__*/ methodify(
-	function run_animation(this: HTMLElement, from: DOMRect, fn: AnimationFn, params = {}) {
+	function run_animation(this: HTMLElement, from: Rect, fn: AnimationFn, params = {}) {
 		if (!from) return noop;
 		return run_transition(
 			this,
@@ -22,7 +23,7 @@ export const run_animation = /*#__PURE__*/ methodify(
 );
 
 export const fix_position = /*#__PURE__*/ methodify(
-	function fix_position(this: HTMLElement, { left, top }: DOMRect) {
+	function fix_position(this: HTMLElement, { left, top }: Rect) {
 		const { position, width, height, transform } = getComputedStyle(this);
 		if (position === 'absolute' || position === 'fixed') return noop;
 		const { position: og_position, width: og_width, height: og_height } = this.style;

src/runtime/internal/loop.ts

@@ -84,7 +84,7 @@ export const setTweenTimeout = (
 	is_outro = false
 ): TaskCanceller => {
 	let running = true;
-	let t = 1 - (end_time - now) / duration || 0;
+	let t = 1 - (end_time - now()) / duration || 0;
 	if (!is_outro && t <= 1.0) run(t >= 0.0 ? t : 0);
 	unsafe_loop((now) => {
 		if (!running) return false;

src/runtime/internal/transitions.ts

@@ -61,7 +61,7 @@ const swap = (fn, rx) =>
 		? (t) => fn(t, 1 - t)
 		: (t) => fn(1 - t, t);
 
-const mirrored = (fn, rx, easing) => {
+const mirrored = (fn, rx, easing, _start, _end) => {
 	const run = swap(fn, rx);
 	return easing
 		? rx & tx.intro
@@ -76,7 +76,7 @@ const reversed = (fn, rx, easing, start = 0, end = 1) => {
 		? (t) => run(start + difference * easing(t))
 		: (t) => run(start + difference * t);
 };
-export const enum tx {
+const enum tx {
 	intro = 1,
 	outro = 2,
 	reverse = 3,