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Contents
import { extend } from '../util';
/**
* Check if two nodes are equivalent.
* @param {import('../dom').PreactElement} node DOM Node to compare
* @param {import('../vnode').VNode} vnode Virtual DOM node to compare
* @param {boolean} [hydrating=false] If true, ignores component constructors
* when comparing.
* @private
*/
export function isSameNodeType(node, vnode, hydrating) {
if (typeof vnode==='string' || typeof vnode==='number') {
return node.splitText!==undefined;
}
if (typeof vnode.nodeName==='string') {
return !node._componentConstructor && isNamedNode(node, vnode.nodeName);
}
return hydrating || node._componentConstructor===vnode.nodeName;
}
/**
* Check if an Element has a given nodeName, case-insensitively.
* @param {import('../dom').PreactElement} node A DOM Element to inspect the name of.
* @param {string} nodeName Unnormalized name to compare against.
*/
export function isNamedNode(node, nodeName) {
return node.normalizedNodeName===nodeName || node.nodeName.toLowerCase()===nodeName.toLowerCase();
}
/**
* Reconstruct Component-style `props` from a VNode.
* Ensures default/fallback values from `defaultProps`:
* Own-properties of `defaultProps` not present in `vnode.attributes` are added.
* @param {import('../vnode').VNode} vnode The VNode to get props for
* @returns {object} The props to use for this VNode
*/
export function getNodeProps(vnode) {
let props = extend({}, vnode.attributes);
props.children = vnode.children;
let defaultProps = vnode.nodeName.defaultProps;
if (defaultProps!==undefined) {
for (let i in defaultProps) {
if (props[i]===undefined) {
props[i] = defaultProps[i];
}
}
}
return props;
}
Version data entries
92 entries across 92 versions & 1 rubygems