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@ -21,7 +21,7 @@ import {
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managed_effect,
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managed_effect,
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managed_pre_effect,
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managed_pre_effect,
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mark_subtree_inert,
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mark_subtree_inert,
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schedule_microtask,
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schedule_raf_task,
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untrack
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untrack
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} from './runtime.js';
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} from './runtime.js';
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import { raf } from './timing.js';
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import { raf } from './timing.js';
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@ -369,6 +369,47 @@ function create_transition(dom, init, direction, effect) {
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},
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},
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// out
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// out
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o() {
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o() {
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// @ts-ignore
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const has_keyed_transition = dom.__animate;
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// If we're outroing an element that has an animation, then we need to fix
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// its position to ensure it behaves nicely without causing layout shift.
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if (has_keyed_transition) {
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const style = getComputedStyle(dom);
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const position = style.position;
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if (position !== 'absolute' && position !== 'fixed') {
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const { width, height } = style;
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const a = dom.getBoundingClientRect();
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dom.style.position = 'absolute';
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dom.style.width = width;
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dom.style.height = height;
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const b = dom.getBoundingClientRect();
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if (a.left !== b.left || a.top !== b.top) {
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const translate = `translate(${a.left - b.left}px, ${a.top - b.top}px)`;
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const existing_transform = style.transform;
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if (existing_transform === 'none') {
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dom.style.transform = translate;
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} else {
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// Previously, in the Svelte 4, we'd just apply the transform the the DOM element. However,
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// because we're now using Web Animations, we can't do that as it won't work properly if the
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// animation is also making use of the same transformations. So instead, we apply an
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// instantaneous animation and pause it on the first frame, just applying the same behavior.
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// We also need to take into consideration matrix transforms and how they might combine with
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// an existing behavior that is already in progress (such as scale).
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// > Follow the white rabbit.
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const transform = existing_transform.startsWith('matrix(1,')
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? translate
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: `matrix(1,0,0,1,0,0)`;
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const frame = {
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transform
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};
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const animation = dom.animate([frame, frame], { duration: 1 });
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animation.pause();
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}
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}
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}
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}
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const needs_reverse = direction === 'both' && curr_direction !== 'out';
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const needs_reverse = direction === 'both' && curr_direction !== 'out';
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curr_direction = 'out';
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curr_direction = 'out';
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if (animation === null || cancelled) {
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if (animation === null || cancelled) {
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@ -432,13 +473,18 @@ function is_transition_block(block) {
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export function bind_transition(dom, get_transition_fn, props_fn, direction, global) {
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export function bind_transition(dom, get_transition_fn, props_fn, direction, global) {
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const transition_effect = /** @type {import('./types.js').EffectSignal} */ (current_effect);
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const transition_effect = /** @type {import('./types.js').EffectSignal} */ (current_effect);
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const block = current_block;
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const block = current_block;
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const is_keyed_transition = direction === 'key';
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let can_show_intro_on_mount = true;
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let can_show_intro_on_mount = true;
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let can_apply_lazy_transitions = false;
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let can_apply_lazy_transitions = false;
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if (is_keyed_transition) {
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// @ts-ignore
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dom.__animate = true;
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}
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/** @type {import('./types.js').Block | null} */
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/** @type {import('./types.js').Block | null} */
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let transition_block = block;
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let transition_block = block;
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while (transition_block !== null) {
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main: while (transition_block !== null) {
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if (is_transition_block(transition_block)) {
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if (is_transition_block(transition_block)) {
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if (transition_block.t === EACH_ITEM_BLOCK) {
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if (transition_block.t === EACH_ITEM_BLOCK) {
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// Lazily apply the each block transition
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// Lazily apply the each block transition
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@ -446,22 +492,31 @@ export function bind_transition(dom, get_transition_fn, props_fn, direction, glo
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transition_block.a = each_item_animate;
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transition_block.a = each_item_animate;
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transition_block = transition_block.p;
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transition_block = transition_block.p;
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} else if (transition_block.t === AWAIT_BLOCK && transition_block.n /* pending */) {
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} else if (transition_block.t === AWAIT_BLOCK && transition_block.n /* pending */) {
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can_show_intro_on_mount = false;
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can_show_intro_on_mount = true;
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} else if (transition_block.t === IF_BLOCK) {
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} else if (transition_block.t === IF_BLOCK) {
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transition_block.r = if_block_transition;
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transition_block.r = if_block_transition;
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if (can_show_intro_on_mount) {
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/** @type {import('./types.js').Block | null} */
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let if_block = transition_block;
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while (if_block.t === IF_BLOCK) {
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// If we have an if block parent that is currently falsy then
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// we can show the intro on mount as long as that block is mounted
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if (if_block.e !== null && !if_block.v) {
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can_show_intro_on_mount = true;
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break main;
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}
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if_block = if_block.p;
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}
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}
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}
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}
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if (!can_apply_lazy_transitions && can_show_intro_on_mount) {
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if (!can_apply_lazy_transitions && can_show_intro_on_mount) {
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can_show_intro_on_mount = transition_block.e === null;
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can_show_intro_on_mount = transition_block.e !== null;
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}
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}
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if (!can_show_intro_on_mount || !global) {
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if (can_show_intro_on_mount || !global) {
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can_apply_lazy_transitions = true;
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can_apply_lazy_transitions = true;
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}
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}
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} else if (
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} else if (transition_block.t === ROOT_BLOCK && !can_apply_lazy_transitions) {
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!can_apply_lazy_transitions &&
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can_show_intro_on_mount = transition_block.e !== null || transition_block.i;
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transition_block.t === ROOT_BLOCK &&
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(transition_block.e !== null || transition_block.i)
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) {
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can_show_intro_on_mount = false;
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}
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}
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transition_block = transition_block.p;
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transition_block = transition_block.p;
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}
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}
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@ -470,7 +525,9 @@ export function bind_transition(dom, get_transition_fn, props_fn, direction, glo
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let transition;
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let transition;
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effect(() => {
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effect(() => {
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let already_mounted = false;
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if (transition !== undefined) {
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if (transition !== undefined) {
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already_mounted = true;
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// Destroy any existing transitions first
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// Destroy any existing transitions first
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transition.x();
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transition.x();
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}
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}
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@ -479,7 +536,7 @@ export function bind_transition(dom, get_transition_fn, props_fn, direction, glo
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const init = (from) =>
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const init = (from) =>
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untrack(() => {
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untrack(() => {
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const props = props_fn === null ? {} : props_fn();
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const props = props_fn === null ? {} : props_fn();
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return direction === 'key'
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return is_keyed_transition
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? /** @type {import('./types.js').AnimateFn<any>} */ (transition_fn)(
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? /** @type {import('./types.js').AnimateFn<any>} */ (transition_fn)(
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dom,
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dom,
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{ from: /** @type {DOMRect} */ (from), to: dom.getBoundingClientRect() },
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{ from: /** @type {DOMRect} */ (from), to: dom.getBoundingClientRect() },
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@ -493,9 +550,9 @@ export function bind_transition(dom, get_transition_fn, props_fn, direction, glo
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transition = create_transition(dom, init, direction, transition_effect);
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transition = create_transition(dom, init, direction, transition_effect);
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const is_intro = direction === 'in';
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const is_intro = direction === 'in';
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const show_intro = !can_show_intro_on_mount && (is_intro || direction === 'both');
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const show_intro = can_show_intro_on_mount && (is_intro || direction === 'both');
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if (show_intro) {
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if (show_intro && !already_mounted) {
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transition.p = transition.i();
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transition.p = transition.i();
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}
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}
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@ -503,7 +560,7 @@ export function bind_transition(dom, get_transition_fn, props_fn, direction, glo
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destroy_signal(effect);
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destroy_signal(effect);
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dom.inert = false;
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dom.inert = false;
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if (show_intro) {
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if (show_intro && !already_mounted) {
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transition.in();
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transition.in();
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}
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}
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@ -547,6 +604,7 @@ export function trigger_transitions(transitions, target_direction, from) {
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const outros = [];
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const outros = [];
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for (const transition of transitions) {
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for (const transition of transitions) {
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const direction = transition.r;
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const direction = transition.r;
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const effect = transition.e;
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if (target_direction === 'in') {
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if (target_direction === 'in') {
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if (direction === 'in' || direction === 'both') {
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if (direction === 'in' || direction === 'both') {
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transition.in();
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transition.in();
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@ -554,7 +612,7 @@ export function trigger_transitions(transitions, target_direction, from) {
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transition.c();
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transition.c();
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}
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}
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transition.d.inert = false;
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transition.d.inert = false;
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mark_subtree_inert(transition.e, false);
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mark_subtree_inert(effect, false);
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} else if (target_direction === 'key') {
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} else if (target_direction === 'key') {
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if (direction === 'key') {
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if (direction === 'key') {
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transition.p = transition.i(/** @type {DOMRect} */ (from));
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transition.p = transition.i(/** @type {DOMRect} */ (from));
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@ -566,7 +624,7 @@ export function trigger_transitions(transitions, target_direction, from) {
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outros.push(transition.o);
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outros.push(transition.o);
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}
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}
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transition.d.inert = true;
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transition.d.inert = true;
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mark_subtree_inert(transition.e, true);
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mark_subtree_inert(effect, true);
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}
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}
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}
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}
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if (outros.length > 0) {
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if (outros.length > 0) {
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@ -599,7 +657,8 @@ function if_block_transition(transition) {
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const c = /** @type {Set<import('./types.js').Transition>} */ (consequent_transitions);
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const c = /** @type {Set<import('./types.js').Transition>} */ (consequent_transitions);
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c.delete(transition);
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c.delete(transition);
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if (c.size === 0) {
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if (c.size === 0) {
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execute_effect(/** @type {import('./types.js').EffectSignal} */ (block.ce));
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const consequent_effect = block.ce;
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execute_effect(/** @type {import('./types.js').EffectSignal} */ (consequent_effect));
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}
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}
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});
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});
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} else {
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} else {
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@ -612,7 +671,8 @@ function if_block_transition(transition) {
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const a = /** @type {Set<import('./types.js').Transition>} */ (alternate_transitions);
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const a = /** @type {Set<import('./types.js').Transition>} */ (alternate_transitions);
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a.delete(transition);
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a.delete(transition);
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if (a.size === 0) {
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if (a.size === 0) {
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execute_effect(/** @type {import('./types.js').EffectSignal} */ (block.ae));
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const alternate_effect = block.ae;
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execute_effect(/** @type {import('./types.js').EffectSignal} */ (alternate_effect));
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}
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}
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});
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});
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}
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}
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@ -646,7 +706,8 @@ function each_item_transition(transition) {
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transitions.delete(transition);
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transitions.delete(transition);
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if (transition.r !== 'key') {
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if (transition.r !== 'key') {
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for (let other of transitions) {
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for (let other of transitions) {
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if (other.r === 'key' || other.r === 'in') {
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const type = other.r;
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if (type === 'key' || type === 'in') {
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transitions.delete(other);
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transitions.delete(other);
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}
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}
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}
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}
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@ -664,26 +725,18 @@ function each_item_transition(transition) {
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*
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*
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* @param {import('./types.js').EachItemBlock} block
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* @param {import('./types.js').EachItemBlock} block
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* @param {Set<import('./types.js').Transition>} transitions
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* @param {Set<import('./types.js').Transition>} transitions
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* @param {number} index
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* @param {boolean} index_is_reactive
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*/
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*/
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function each_item_animate(block, transitions, index, index_is_reactive) {
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function each_item_animate(block, transitions) {
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let prev_index = block.i;
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if (index_is_reactive) {
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prev_index = /** @type {import('./types.js').Signal<number>} */ (prev_index).v;
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}
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const items = block.p.v;
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if (prev_index !== index && /** @type {number} */ (index) < items.length) {
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const from_dom = /** @type {Element} */ (get_first_element(block));
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const from_dom = /** @type {Element} */ (get_first_element(block));
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const from = from_dom.getBoundingClientRect();
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const from = from_dom.getBoundingClientRect();
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// Cancel any existing key transitions
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// Cancel any existing key transitions
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for (const transition of transitions) {
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for (const transition of transitions) {
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if (transition.r === 'key') {
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const type = transition.r;
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if (type === 'key') {
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transition.c();
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transition.c();
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}
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}
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}
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}
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schedule_microtask(() => {
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schedule_raf_task(() => {
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trigger_transitions(transitions, 'key', from);
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trigger_transitions(transitions, 'key', from);
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});
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});
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}
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}
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}
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