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Graduation / ui /node_modules /svelte /src /runtime /internal /dom.js
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 import { contenteditable_truthy_values, has_prop } from './utils.js';
import { ResizeObserverSingleton } from './ResizeObserverSingleton.js';
// Track which nodes are claimed during hydration. Unclaimed nodes can then be removed from the DOM
// at the end of hydration without touching the remaining nodes.
let is_hydrating = false;
/**
* @returns {void}
*/
export function start_hydrating() {
is_hydrating = true;
}
/**
* @returns {void}
*/
export function end_hydrating() {
is_hydrating = false;
}
/**
* @param {number} low
* @param {number} high
* @param {(index: number) => number} key
* @param {number} value
* @returns {number}
*/
function upper_bound(low, high, key, value) {
// Return first index of value larger than input value in the range [low, high)
while (low < high) {
const mid = low + ((high - low) >> 1);
if (key(mid) <= value) {
low = mid + 1;
} else {
high = mid;
}
}
return low;
}
/**
* @param {NodeEx} target
* @returns {void}
*/
function init_hydrate(target) {
if (target.hydrate_init) return;
target.hydrate_init = true;
// We know that all children have claim_order values since the unclaimed have been detached if target is not <head>
let children = /** @type {ArrayLike<NodeEx2>} */ (target.childNodes);
// If target is <head>, there may be children without claim_order
if (target.nodeName === 'HEAD') {
const my_children = [];
for (let i = 0; i < children.length; i++) {
const node = children[i];
if (node.claim_order !== undefined) {
my_children.push(node);
}
}
children = my_children;
}
/*
* Reorder claimed children optimally.
* We can reorder claimed children optimally by finding the longest subsequence of
* nodes that are already claimed in order and only moving the rest. The longest
* subsequence of nodes that are claimed in order can be found by
* computing the longest increasing subsequence of .claim_order values.
*
* This algorithm is optimal in generating the least amount of reorder operations
* possible.
*
* Proof:
* We know that, given a set of reordering operations, the nodes that do not move
* always form an increasing subsequence, since they do not move among each other
* meaning that they must be already ordered among each other. Thus, the maximal
* set of nodes that do not move form a longest increasing subsequence.
*/
// Compute longest increasing subsequence
// m: subsequence length j => index k of smallest value that ends an increasing subsequence of length j
const m = new Int32Array(children.length + 1);
// Predecessor indices + 1
const p = new Int32Array(children.length);
m[0] = -1;
let longest = 0;
for (let i = 0; i < children.length; i++) {
const current = children[i].claim_order;
// Find the largest subsequence length such that it ends in a value less than our current value
// upper_bound returns first greater value, so we subtract one
// with fast path for when we are on the current longest subsequence
const seq_len =
(longest > 0 && children[m[longest]].claim_order <= current
? longest + 1
: upper_bound(1, longest, (idx) => children[m[idx]].claim_order, current)) - 1;
p[i] = m[seq_len] + 1;
const new_len = seq_len + 1;
// We can guarantee that current is the smallest value. Otherwise, we would have generated a longer sequence.
m[new_len] = i;
longest = Math.max(new_len, longest);
}
// The longest increasing subsequence of nodes (initially reversed)
/**
* @type {NodeEx2[]}
*/
const lis = [];
// The rest of the nodes, nodes that will be moved
/**
* @type {NodeEx2[]}
*/
const to_move = [];
let last = children.length - 1;
for (let cur = m[longest] + 1; cur != 0; cur = p[cur - 1]) {
lis.push(children[cur - 1]);
for (; last >= cur; last--) {
to_move.push(children[last]);
}
last--;
}
for (; last >= 0; last--) {
to_move.push(children[last]);
}
lis.reverse();
// We sort the nodes being moved to guarantee that their insertion order matches the claim order
to_move.sort((a, b) => a.claim_order - b.claim_order);
// Finally, we move the nodes
for (let i = 0, j = 0; i < to_move.length; i++) {
while (j < lis.length && to_move[i].claim_order >= lis[j].claim_order) {
j++;
}
const anchor = j < lis.length ? lis[j] : null;
target.insertBefore(to_move[i], anchor);
}
}
/**
* @param {Node} target
* @param {Node} node
* @returns {void}
*/
export function append(target, node) {
target.appendChild(node);
}
/**
* @param {Node} target
* @param {string} style_sheet_id
* @param {string} styles
* @returns {void}
*/
export function append_styles(target, style_sheet_id, styles) {
const append_styles_to = get_root_for_style(target);
if (!append_styles_to.getElementById(style_sheet_id)) {
const style = element('style');
style.id = style_sheet_id;
style.textContent = styles;
append_stylesheet(append_styles_to, style);
}
}
/**
* @param {Node} node
* @returns {ShadowRoot | Document}
*/
export function get_root_for_style(node) {
if (!node) return document;
const root = node.getRootNode ? node.getRootNode() : node.ownerDocument;
if (root && /** @type {ShadowRoot} */ (root).host) {
return /** @type {ShadowRoot} */ (root);
}
return node.ownerDocument;
}
/**
* @param {Node} node
* @returns {CSSStyleSheet}
*/
export function append_empty_stylesheet(node) {
const style_element = element('style');
// For transitions to work without 'style-src: unsafe-inline' Content Security Policy,
// these empty tags need to be allowed with a hash as a workaround until we move to the Web Animations API.
// Using the hash for the empty string (for an empty tag) works in all browsers except Safari.
// So as a workaround for the workaround, when we append empty style tags we set their content to /* empty */.
// The hash 'sha256-9OlNO0DNEeaVzHL4RZwCLsBHA8WBQ8toBp/4F5XV2nc=' will then work even in Safari.
style_element.textContent = '/* empty */';
append_stylesheet(get_root_for_style(node), style_element);
return style_element.sheet;
}
/**
* @param {ShadowRoot | Document} node
* @param {HTMLStyleElement} style
* @returns {CSSStyleSheet}
*/
function append_stylesheet(node, style) {
append(/** @type {Document} */ (node).head || node, style);
return style.sheet;
}
/**
* @param {NodeEx} target
* @param {NodeEx} node
* @returns {void}
*/
export function append_hydration(target, node) {
if (is_hydrating) {
init_hydrate(target);
if (
target.actual_end_child === undefined ||
(target.actual_end_child !== null && target.actual_end_child.parentNode !== target)
) {
target.actual_end_child = target.firstChild;
}
// Skip nodes of undefined ordering
while (target.actual_end_child !== null && target.actual_end_child.claim_order === undefined) {
target.actual_end_child = target.actual_end_child.nextSibling;
}
if (node !== target.actual_end_child) {
// We only insert if the ordering of this node should be modified or the parent node is not target
if (node.claim_order !== undefined || node.parentNode !== target) {
target.insertBefore(node, target.actual_end_child);
}
} else {
target.actual_end_child = node.nextSibling;
}
} else if (node.parentNode !== target || node.nextSibling !== null) {
target.appendChild(node);
}
}
/**
* @param {Node} target
* @param {Node} node
* @param {Node} [anchor]
* @returns {void}
*/
export function insert(target, node, anchor) {
target.insertBefore(node, anchor || null);
}
/**
* @param {NodeEx} target
* @param {NodeEx} node
* @param {NodeEx} [anchor]
* @returns {void}
*/
export function insert_hydration(target, node, anchor) {
if (is_hydrating && !anchor) {
append_hydration(target, node);
} else if (node.parentNode !== target || node.nextSibling != anchor) {
target.insertBefore(node, anchor || null);
}
}
/**
* @param {Node} node
* @returns {void}
*/
export function detach(node) {
if (node.parentNode) {
node.parentNode.removeChild(node);
}
}
/**
* @returns {void} */
export function destroy_each(iterations, detaching) {
for (let i = 0; i < iterations.length; i += 1) {
if (iterations[i]) iterations[i].d(detaching);
}
}
/**
* @template {keyof HTMLElementTagNameMap} K
* @param {K} name
* @returns {HTMLElementTagNameMap[K]}
*/
export function element(name) {
return document.createElement(name);
}
/**
* @template {keyof HTMLElementTagNameMap} K
* @param {K} name
* @param {string} is
* @returns {HTMLElementTagNameMap[K]}
*/
export function element_is(name, is) {
return document.createElement(name, { is });
}
/**
* @template T
* @template {keyof T} K
* @param {T} obj
* @param {K[]} exclude
* @returns {Pick<T, Exclude<keyof T, K>>}
*/
export function object_without_properties(obj, exclude) {
const target = /** @type {Pick<T, Exclude<keyof T, K>>} */ ({});
for (const k in obj) {
if (
has_prop(obj, k) &&
// @ts-ignore
exclude.indexOf(k) === -1
) {
// @ts-ignore
target[k] = obj[k];
}
}
return target;
}
/**
* @template {keyof SVGElementTagNameMap} K
* @param {K} name
* @returns {SVGElement}
*/
export function svg_element(name) {
return document.createElementNS('http://www.w3.org/2000/svg', name);
}
/**
* @param {string} data
* @returns {Text}
*/
export function text(data) {
return document.createTextNode(data);
}
/**
* @returns {Text} */
export function space() {
return text(' ');
}
/**
* @returns {Text} */
export function empty() {
return text('');
}
/**
* @param {string} content
* @returns {Comment}
*/
export function comment(content) {
return document.createComment(content);
}
/**
* @param {EventTarget} node
* @param {string} event
* @param {EventListenerOrEventListenerObject} handler
* @param {boolean | AddEventListenerOptions | EventListenerOptions} [options]
* @returns {() => void}
*/
export function listen(node, event, handler, options) {
node.addEventListener(event, handler, options);
return () => node.removeEventListener(event, handler, options);
}
/**
* @returns {(event: any) => any} */
export function prevent_default(fn) {
return function (event) {
event.preventDefault();
// @ts-ignore
return fn.call(this, event);
};
}
/**
* @returns {(event: any) => any} */
export function stop_propagation(fn) {
return function (event) {
event.stopPropagation();
// @ts-ignore
return fn.call(this, event);
};
}
/**
* @returns {(event: any) => any} */
export function stop_immediate_propagation(fn) {
return function (event) {
event.stopImmediatePropagation();
// @ts-ignore
return fn.call(this, event);
};
}
/**
* @returns {(event: any) => void} */
export function self(fn) {
return function (event) {
// @ts-ignore
if (event.target === this) fn.call(this, event);
};
}
/**
* @returns {(event: any) => void} */
export function trusted(fn) {
return function (event) {
// @ts-ignore
if (event.isTrusted) fn.call(this, event);
};
}
/**
* @param {Element} node
* @param {string} attribute
* @param {string} [value]
* @returns {void}
*/
export function attr(node, attribute, value) {
if (value == null) node.removeAttribute(attribute);
else if (node.getAttribute(attribute) !== value) node.setAttribute(attribute, value);
}
/**
* List of attributes that should always be set through the attr method,
* because updating them through the property setter doesn't work reliably.
* In the example of `width`/`height`, the problem is that the setter only
* accepts numeric values, but the attribute can also be set to a string like `50%`.
* If this list becomes too big, rethink this approach.
*/
const always_set_through_set_attribute = ['width', 'height'];
/**
* @param {Element & ElementCSSInlineStyle} node
* @param {{ [x: string]: string }} attributes
* @returns {void}
*/
export function set_attributes(node, attributes) {
// @ts-ignore
const descriptors = Object.getOwnPropertyDescriptors(node.__proto__);
for (const key in attributes) {
if (attributes[key] == null) {
node.removeAttribute(key);
} else if (key === 'style') {
node.style.cssText = attributes[key];
} else if (key === '__value') {
/** @type {any} */ (node).value = node[key] = attributes[key];
} else if (
descriptors[key] &&
descriptors[key].set &&
always_set_through_set_attribute.indexOf(key) === -1
) {
node[key] = attributes[key];
} else {
attr(node, key, attributes[key]);
}
}
}
/**
* @param {Element & ElementCSSInlineStyle} node
* @param {{ [x: string]: string }} attributes
* @returns {void}
*/
export function set_svg_attributes(node, attributes) {
for (const key in attributes) {
attr(node, key, attributes[key]);
}
}
/**
* @param {Record<string, unknown>} data_map
* @returns {void}
*/
export function set_custom_element_data_map(node, data_map) {
Object.keys(data_map).forEach((key) => {
set_custom_element_data(node, key, data_map[key]);
});
}
/**
* @returns {void} */
export function set_custom_element_data(node, prop, value) {
const lower = prop.toLowerCase(); // for backwards compatibility with existing behavior we do lowercase first
if (lower in node) {
node[lower] = typeof node[lower] === 'boolean' && value === '' ? true : value;
} else if (prop in node) {
node[prop] = typeof node[prop] === 'boolean' && value === '' ? true : value;
} else {
attr(node, prop, value);
}
}
/**
* @param {string} tag
*/
export function set_dynamic_element_data(tag) {
return /-/.test(tag) ? set_custom_element_data_map : set_attributes;
}
/**
* @returns {void}
*/
export function xlink_attr(node, attribute, value) {
node.setAttributeNS('http://www.w3.org/1999/xlink', attribute, value);
}
/**
* @param {HTMLElement} node
* @returns {string}
*/
export function get_svelte_dataset(node) {
return node.dataset.svelteH;
}
/**
* @returns {unknown[]} */
export function get_binding_group_value(group, __value, checked) {
const value = new Set();
for (let i = 0; i < group.length; i += 1) {
if (group[i].checked) value.add(group[i].__value);
}
if (!checked) {
value.delete(__value);
}
return Array.from(value);
}
/**
* @param {HTMLInputElement[]} group
* @returns {{ p(...inputs: HTMLInputElement[]): void; r(): void; }}
*/
export function init_binding_group(group) {
/**
* @type {HTMLInputElement[]} */
let _inputs;
return {
/* push */ p(...inputs) {
_inputs = inputs;
_inputs.forEach((input) => group.push(input));
},
/* remove */ r() {
_inputs.forEach((input) => group.splice(group.indexOf(input), 1));
}
};
}
/**
* @param {number[]} indexes
* @returns {{ u(new_indexes: number[]): void; p(...inputs: HTMLInputElement[]): void; r: () => void; }}
*/
export function init_binding_group_dynamic(group, indexes) {
/**
* @type {HTMLInputElement[]} */
let _group = get_binding_group(group);
/**
* @type {HTMLInputElement[]} */
let _inputs;
function get_binding_group(group) {
for (let i = 0; i < indexes.length; i++) {
group = group[indexes[i]] = group[indexes[i]] || [];
}
return group;
}
/**
* @returns {void} */
function push() {
_inputs.forEach((input) => _group.push(input));
}
/**
* @returns {void} */
function remove() {
_inputs.forEach((input) => _group.splice(_group.indexOf(input), 1));
}
return {
/* update */ u(new_indexes) {
indexes = new_indexes;
const new_group = get_binding_group(group);
if (new_group !== _group) {
remove();
_group = new_group;
push();
}
},
/* push */ p(...inputs) {
_inputs = inputs;
push();
},
/* remove */ r: remove
};
}
/** @returns {number} */
export function to_number(value) {
return value === '' ? null : +value;
}
/** @returns {any[]} */
export function time_ranges_to_array(ranges) {
const array = [];
for (let i = 0; i < ranges.length; i += 1) {
array.push({ start: ranges.start(i), end: ranges.end(i) });
}
return array;
}
/**
* @param {Element} element
* @returns {ChildNode[]}
*/
export function children(element) {
return Array.from(element.childNodes);
}
/**
* @param {ChildNodeArray} nodes
* @returns {void}
*/
function init_claim_info(nodes) {
if (nodes.claim_info === undefined) {
nodes.claim_info = { last_index: 0, total_claimed: 0 };
}
}
/**
* @template {ChildNodeEx} R
* @param {ChildNodeArray} nodes
* @param {(node: ChildNodeEx) => node is R} predicate
* @param {(node: ChildNodeEx) => ChildNodeEx | undefined} process_node
* @param {() => R} create_node
* @param {boolean} dont_update_last_index
* @returns {R}
*/
function claim_node(nodes, predicate, process_node, create_node, dont_update_last_index = false) {
// Try to find nodes in an order such that we lengthen the longest increasing subsequence
init_claim_info(nodes);
const result_node = (() => {
// We first try to find an element after the previous one
for (let i = nodes.claim_info.last_index; i < nodes.length; i++) {
const node = nodes[i];
if (predicate(node)) {
const replacement = process_node(node);
if (replacement === undefined) {
nodes.splice(i, 1);
} else {
nodes[i] = replacement;
}
if (!dont_update_last_index) {
nodes.claim_info.last_index = i;
}
return node;
}
}
// Otherwise, we try to find one before
// We iterate in reverse so that we don't go too far back
for (let i = nodes.claim_info.last_index - 1; i >= 0; i--) {
const node = nodes[i];
if (predicate(node)) {
const replacement = process_node(node);
if (replacement === undefined) {
nodes.splice(i, 1);
} else {
nodes[i] = replacement;
}
if (!dont_update_last_index) {
nodes.claim_info.last_index = i;
} else if (replacement === undefined) {
// Since we spliced before the last_index, we decrease it
nodes.claim_info.last_index--;
}
return node;
}
}
// If we can't find any matching node, we create a new one
return create_node();
})();
result_node.claim_order = nodes.claim_info.total_claimed;
nodes.claim_info.total_claimed += 1;
return result_node;
}
/**
* @param {ChildNodeArray} nodes
* @param {string} name
* @param {{ [key: string]: boolean }} attributes
* @param {(name: string) => Element | SVGElement} create_element
* @returns {Element | SVGElement}
*/
function claim_element_base(nodes, name, attributes, create_element) {
return claim_node(
nodes,
/** @returns {node is Element | SVGElement} */
(node) => node.nodeName === name,
/** @param {Element} node */
(node) => {
const remove = [];
for (let j = 0; j < node.attributes.length; j++) {
const attribute = node.attributes[j];
if (!attributes[attribute.name]) {
remove.push(attribute.name);
}
}
remove.forEach((v) => node.removeAttribute(v));
return undefined;
},
() => create_element(name)
);
}
/**
* @param {ChildNodeArray} nodes
* @param {string} name
* @param {{ [key: string]: boolean }} attributes
* @returns {Element | SVGElement}
*/
export function claim_element(nodes, name, attributes) {
return claim_element_base(nodes, name, attributes, element);
}
/**
* @param {ChildNodeArray} nodes
* @param {string} name
* @param {{ [key: string]: boolean }} attributes
* @returns {Element | SVGElement}
*/
export function claim_svg_element(nodes, name, attributes) {
return claim_element_base(nodes, name, attributes, svg_element);
}
/**
* @param {ChildNodeArray} nodes
* @returns {Text}
*/
export function claim_text(nodes, data) {
return claim_node(
nodes,
/** @returns {node is Text} */
(node) => node.nodeType === 3,
/** @param {Text} node */
(node) => {
const data_str = '' + data;
if (node.data.startsWith(data_str)) {
if (node.data.length !== data_str.length) {
return node.splitText(data_str.length);
}
} else {
node.data = data_str;
}
},
() => text(data),
true // Text nodes should not update last index since it is likely not worth it to eliminate an increasing subsequence of actual elements
);
}
/**
* @returns {Text} */
export function claim_space(nodes) {
return claim_text(nodes, ' ');
}
/**
* @param {ChildNodeArray} nodes
* @returns {Comment}
*/
export function claim_comment(nodes, data) {
return claim_node(
nodes,
/** @returns {node is Comment} */
(node) => node.nodeType === 8,
/** @param {Comment} node */
(node) => {
node.data = '' + data;
return undefined;
},
() => comment(data),
true
);
}
function get_comment_idx(nodes, text, start) {
for (let i = start; i < nodes.length; i += 1) {
const node = nodes[i];
if (node.nodeType === 8 /* comment node */ && node.textContent.trim() === text) {
return i;
}
}
return -1;
}
/**
* @param {boolean} is_svg
* @returns {HtmlTagHydration}
*/
export function claim_html_tag(nodes, is_svg) {
// find html opening tag
const start_index = get_comment_idx(nodes, 'HTML_TAG_START', 0);
const end_index = get_comment_idx(nodes, 'HTML_TAG_END', start_index + 1);
if (start_index === -1 || end_index === -1) {
return new HtmlTagHydration(is_svg);
}
init_claim_info(nodes);
const html_tag_nodes = nodes.splice(start_index, end_index - start_index + 1);
detach(html_tag_nodes[0]);
detach(html_tag_nodes[html_tag_nodes.length - 1]);
const claimed_nodes = html_tag_nodes.slice(1, html_tag_nodes.length - 1);
if (claimed_nodes.length === 0) {
return new HtmlTagHydration(is_svg);
}
for (const n of claimed_nodes) {
n.claim_order = nodes.claim_info.total_claimed;
nodes.claim_info.total_claimed += 1;
}
return new HtmlTagHydration(is_svg, claimed_nodes);
}
/**
* @param {Text} text
* @param {unknown} data
* @returns {void}
*/
export function set_data(text, data) {
data = '' + data;
if (text.data === data) return;
text.data = /** @type {string} */ (data);
}
/**
* @param {Text} text
* @param {unknown} data
* @returns {void}
*/
export function set_data_contenteditable(text, data) {
data = '' + data;
if (text.wholeText === data) return;
text.data = /** @type {string} */ (data);
}
/**
* @param {Text} text
* @param {unknown} data
* @param {string} attr_value
* @returns {void}
*/
export function set_data_maybe_contenteditable(text, data, attr_value) {
if (~contenteditable_truthy_values.indexOf(attr_value)) {
set_data_contenteditable(text, data);
} else {
set_data(text, data);
}
}
/**
* @returns {void} */
export function set_input_value(input, value) {
input.value = value == null ? '' : value;
}
/**
* @returns {void} */
export function set_input_type(input, type) {
try {
input.type = type;
} catch (e) {
// do nothing
}
}
/**
* @returns {void} */
export function set_style(node, key, value, important) {
if (value == null) {
node.style.removeProperty(key);
} else {
node.style.setProperty(key, value, important ? 'important' : '');
}
}
/**
* @returns {void} */
export function select_option(select, value, mounting) {
for (let i = 0; i < select.options.length; i += 1) {
const option = select.options[i];
if (option.__value === value) {
option.selected = true;
return;
}
}
if (!mounting || value !== undefined) {
select.selectedIndex = -1; // no option should be selected
}
}
/**
* @returns {void} */
export function select_options(select, value) {
for (let i = 0; i < select.options.length; i += 1) {
const option = select.options[i];
option.selected = ~value.indexOf(option.__value);
}
}
export function select_value(select) {
const selected_option = select.querySelector(':checked');
return selected_option && selected_option.__value;
}
export function select_multiple_value(select) {
return [].map.call(select.querySelectorAll(':checked'), (option) => option.__value);
}
// unfortunately this can't be a constant as that wouldn't be tree-shakeable
// so we cache the result instead
/**
* @type {boolean} */
let crossorigin;
/**
* @returns {boolean} */
export function is_crossorigin() {
if (crossorigin === undefined) {
crossorigin = false;
try {
if (typeof window !== 'undefined' && window.parent) {
void window.parent.document;
}
} catch (error) {
crossorigin = true;
}
}
return crossorigin;
}
/**
* @param {HTMLElement} node
* @param {() => void} fn
* @returns {() => void}
*/
export function add_iframe_resize_listener(node, fn) {
const computed_style = getComputedStyle(node);
if (computed_style.position === 'static') {
node.style.position = 'relative';
}
const iframe = element('iframe');
iframe.setAttribute(
'style',
'display: block; position: absolute; top: 0; left: 0; width: 100%; height: 100%; ' +
'overflow: hidden; border: 0; opacity: 0; pointer-events: none; z-index: -1;'
);
iframe.setAttribute('aria-hidden', 'true');
iframe.tabIndex = -1;
const crossorigin = is_crossorigin();
/**
* @type {() => void}
*/
let unsubscribe;
if (crossorigin) {
iframe.src = "data:text/html,<script>onresize=function(){parent.postMessage(0,'*')}</script>";
unsubscribe = listen(
window,
'message',
/** @param {MessageEvent} event */ (event) => {
if (event.source === iframe.contentWindow) fn();
}
);
} else {
iframe.src = 'about:blank';
iframe.onload = () => {
unsubscribe = listen(iframe.contentWindow, 'resize', fn);
// make sure an initial resize event is fired _after_ the iframe is loaded (which is asynchronous)
// see https://github.com/sveltejs/svelte/issues/4233
fn();
};
}
append(node, iframe);
return () => {
if (crossorigin) {
unsubscribe();
} else if (unsubscribe && iframe.contentWindow) {
unsubscribe();
}
detach(iframe);
};
}
export const resize_observer_content_box = /* @__PURE__ */ new ResizeObserverSingleton({
box: 'content-box'
});
export const resize_observer_border_box = /* @__PURE__ */ new ResizeObserverSingleton({
box: 'border-box'
});
export const resize_observer_device_pixel_content_box = /* @__PURE__ */ new ResizeObserverSingleton(
{ box: 'device-pixel-content-box' }
);
export { ResizeObserverSingleton };
/**
* @returns {void} */
export function toggle_class(element, name, toggle) {
// The `!!` is required because an `undefined` flag means flipping the current state.
element.classList.toggle(name, !!toggle);
}
/**
* @template T
* @param {string} type
* @param {T} [detail]
* @param {{ bubbles?: boolean, cancelable?: boolean }} [options]
* @returns {CustomEvent<T>}
*/
export function custom_event(type, detail, { bubbles = false, cancelable = false } = {}) {
return new CustomEvent(type, { detail, bubbles, cancelable });
}
/**
* @param {string} selector
* @param {HTMLElement} parent
* @returns {ChildNodeArray}
*/
export function query_selector_all(selector, parent = document.body) {
return Array.from(parent.querySelectorAll(selector));
}
/**
* @param {string} nodeId
* @param {HTMLElement} head
* @returns {any[]}
*/
export function head_selector(nodeId, head) {
const result = [];
let started = 0;
for (const node of head.childNodes) {
if (node.nodeType === 8 /* comment node */) {
const comment = node.textContent.trim();
if (comment === `HEAD_${nodeId}_END`) {
started -= 1;
result.push(node);
} else if (comment === `HEAD_${nodeId}_START`) {
started += 1;
result.push(node);
}
} else if (started > 0) {
result.push(node);
}
}
return result;
}
/** */
export class HtmlTag {
/**
* @private
* @default false
*/
is_svg = false;
/** parent for creating node */
e = undefined;
/** html tag nodes */
n = undefined;
/** target */
t = undefined;
/** anchor */
a = undefined;
constructor(is_svg = false) {
this.is_svg = is_svg;
this.e = this.n = null;
}
/**
* @param {string} html
* @returns {void}
*/
c(html) {
this.h(html);
}
/**
* @param {string} html
* @param {HTMLElement | SVGElement} target
* @param {HTMLElement | SVGElement} anchor
* @returns {void}
*/
m(html, target, anchor = null) {
if (!this.e) {
if (this.is_svg)
this.e = svg_element(/** @type {keyof SVGElementTagNameMap} */ (target.nodeName));
/** #7364 target for <template> may be provided as #document-fragment(11) */ else
this.e = element(
/** @type {keyof HTMLElementTagNameMap} */ (
target.nodeType === 11 ? 'TEMPLATE' : target.nodeName
)
);
this.t =
target.tagName !== 'TEMPLATE'
? target
: /** @type {HTMLTemplateElement} */ (target).content;
this.c(html);
}
this.i(anchor);
}
/**
* @param {string} html
* @returns {void}
*/
h(html) {
this.e.innerHTML = html;
this.n = Array.from(
this.e.nodeName === 'TEMPLATE' ? this.e.content.childNodes : this.e.childNodes
);
}
/**
* @returns {void} */
i(anchor) {
for (let i = 0; i < this.n.length; i += 1) {
insert(this.t, this.n[i], anchor);
}
}
/**
* @param {string} html
* @returns {void}
*/
p(html) {
this.d();
this.h(html);
this.i(this.a);
}
/**
* @returns {void} */
d() {
this.n.forEach(detach);
}
}
export class HtmlTagHydration extends HtmlTag {
/** @type {Element[]} hydration claimed nodes */
l = undefined;
constructor(is_svg = false, claimed_nodes) {
super(is_svg);
this.e = this.n = null;
this.l = claimed_nodes;
}
/**
* @param {string} html
* @returns {void}
*/
c(html) {
if (this.l) {
this.n = this.l;
} else {
super.c(html);
}
}
/**
* @returns {void} */
i(anchor) {
for (let i = 0; i < this.n.length; i += 1) {
insert_hydration(this.t, this.n[i], anchor);
}
}
}
/**
* @param {NamedNodeMap} attributes
* @returns {{}}
*/
export function attribute_to_object(attributes) {
const result = {};
for (const attribute of attributes) {
result[attribute.name] = attribute.value;
}
return result;
}
const escaped = {
'"': '&quot;',
'&': '&amp;',
'<': '&lt;'
};
const regex_attribute_characters_to_escape = /["&<]/g;
/**
* Note that the attribute itself should be surrounded in double quotes
* @param {any} attribute
*/
function escape_attribute(attribute) {
return String(attribute).replace(regex_attribute_characters_to_escape, (match) => escaped[match]);
}
/**
* @param {Record<string, string>} attributes
*/
export function stringify_spread(attributes) {
let str = ' ';
for (const key in attributes) {
if (attributes[key] != null) {
str += `${key}="${escape_attribute(attributes[key])}" `;
}
}
return str;
}
/**
* @param {HTMLElement} element
* @returns {{}}
*/
export function get_custom_elements_slots(element) {
const result = {};
element.childNodes.forEach(
/** @param {Element} node */ (node) => {
result[node.slot || 'default'] = true;
}
);
return result;
}
export function construct_svelte_component(component, props) {
return new component(props);
}
/**
* @typedef {Node & {
* claim_order?: number;
* hydrate_init?: true;
* actual_end_child?: NodeEx;
* childNodes: NodeListOf<NodeEx>;
* }} NodeEx
*/
/** @typedef {ChildNode & NodeEx} ChildNodeEx */
/** @typedef {NodeEx & { claim_order: number }} NodeEx2 */
/**
* @typedef {ChildNodeEx[] & {
* claim_info?: {
* last_index: number;
* total_claimed: number;
* };
* }} ChildNodeArray
*/