@angular/core
Version:
Angular - the core framework
66 lines • 7.56 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/**
* The name of an attribute that can be added to the hydration boundary node
* (component host node) to disable hydration for the content within that boundary.
*/
export const SKIP_HYDRATION_ATTR_NAME = 'ngSkipHydration';
/** Lowercase name of the `ngSkipHydration` attribute used for case-insensitive comparisons. */
const SKIP_HYDRATION_ATTR_NAME_LOWER_CASE = 'ngskiphydration';
/**
* Helper function to check if a given TNode has the 'ngSkipHydration' attribute.
*/
export function hasSkipHydrationAttrOnTNode(tNode) {
const attrs = tNode.mergedAttrs;
if (attrs === null)
return false;
// only ever look at the attribute name and skip the values
for (let i = 0; i < attrs.length; i += 2) {
const value = attrs[i];
// This is a marker, which means that the static attributes section is over,
// so we can exit early.
if (typeof value === 'number')
return false;
if (typeof value === 'string' && value.toLowerCase() === SKIP_HYDRATION_ATTR_NAME_LOWER_CASE) {
return true;
}
}
return false;
}
/**
* Helper function to check if a given RElement has the 'ngSkipHydration' attribute.
*/
export function hasSkipHydrationAttrOnRElement(rNode) {
return rNode.hasAttribute(SKIP_HYDRATION_ATTR_NAME);
}
/**
* Checks whether a TNode has a flag to indicate that it's a part of
* a skip hydration block.
*/
export function hasInSkipHydrationBlockFlag(tNode) {
return (tNode.flags & 128 /* TNodeFlags.inSkipHydrationBlock */) === 128 /* TNodeFlags.inSkipHydrationBlock */;
}
/**
* Helper function that determines if a given node is within a skip hydration block
* by navigating up the TNode tree to see if any parent nodes have skip hydration
* attribute.
*/
export function isInSkipHydrationBlock(tNode) {
if (hasInSkipHydrationBlockFlag(tNode)) {
return true;
}
let currentTNode = tNode.parent;
while (currentTNode) {
if (hasInSkipHydrationBlockFlag(tNode) || hasSkipHydrationAttrOnTNode(currentTNode)) {
return true;
}
currentTNode = currentTNode.parent;
}
return false;
}
//# sourceMappingURL=data:application/json;base64,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