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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 4565x 4565x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1568x 1568x 1568x 2x 2x 2x 2x 2x 2x 2x 5817x 5817x 5817x 5817x 2x 2x 2x 2x 2x 2x 2x 2x 2x 12942x 6303x 6303x 6639x 6639x 6639x 6639x 12942x 8x 8x 6631x 6631x 6631x 6631x 6631x 12942x 40206x 26866x 26866x 26866x 10067x 26866x 16696x 6629x 6629x 6629x 6629x 10067x 10067x 10067x 26866x 33577x 33577x 33577x 2x 2x 2x 2x 2x 2x 2x 1x 1x 2x 2x 2x 2x 2x | import { DEV } from 'esm-env';
import { HYDRATION_END, HYDRATION_START, HYDRATION_ERROR } from '../../../constants.js';
import * as w from '../warnings.js';
/**
* Use this variable to guard everything related to hydration code so it can be treeshaken out
* if the user doesn't use the `hydrate` method and these code paths are therefore not needed.
*/
export let hydrating = false;
/** @param {boolean} value */
export function set_hydrating(value) {
hydrating = value;
}
/**
* Array of nodes to traverse for hydration. This will be null if we're not hydrating, but for
* the sake of simplicity we're not going to use `null` checks everywhere and instead rely on
* the `hydrating` flag to tell whether or not we're in hydration mode at which point this is set.
* @type {import('#client').TemplateNode[]}
*/
export let hydrate_nodes = /** @type {any} */ (null);
/** @type {import('#client').TemplateNode} */
export let hydrate_start;
/** @param {import('#client').TemplateNode[]} nodes */
export function set_hydrate_nodes(nodes) {
hydrate_nodes = nodes;
hydrate_start = nodes && nodes[0];
}
/**
* When assigning nodes to an effect during hydration, we typically want the hydration boundary comment node
* immediately before `hydrate_start`. In some cases, this comment doesn't exist because we optimized it away.
* TODO it might be worth storing this value separately rather than retrieving it with `previousSibling`
*/
export function get_start() {
return /** @type {import('#client').TemplateNode} */ (
hydrate_start.previousSibling ?? hydrate_start
);
}
/**
* This function is only called when `hydrating` is true. If passed a `<!--[-->` opening
* hydration marker, it finds the corresponding closing marker and sets `hydrate_nodes`
* to everything between the markers, before returning the closing marker.
* @param {Node} node
* @returns {Node}
*/
export function hydrate_anchor(node) {
if (node.nodeType !== 8) {
return node;
}
var current = /** @type {Node | null} */ (node);
// TODO this could have false positives, if a user comment consisted of `[`. need to tighten that up
if (/** @type {Comment} */ (current).data !== HYDRATION_START) {
return node;
}
/** @type {Node[]} */
var nodes = [];
var depth = 0;
while ((current = /** @type {Node} */ (current).nextSibling) !== null) {
if (current.nodeType === 8) {
var data = /** @type {Comment} */ (current).data;
if (data === HYDRATION_START) {
depth += 1;
} else if (data[0] === HYDRATION_END) {
if (depth === 0) {
hydrate_nodes = /** @type {import('#client').TemplateNode[]} */ (nodes);
hydrate_start = /** @type {import('#client').TemplateNode} */ (nodes[0]);
return current;
}
depth -= 1;
}
}
nodes.push(current);
}
let location;
if (DEV) {
// @ts-expect-error
const loc = node.parentNode?.__svelte_meta?.loc;
if (loc) {
location = `${loc.file}:${loc.line}:${loc.column}`;
}
}
w.hydration_mismatch(location);
throw HYDRATION_ERROR;
}
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