mostly-dom/lib.es2015/patchVNode/patchVNode.js

A virtual-dom for TypeScript

import { postpatchHooks, prepatchHooks, updateHooks } from './hooks';
import { patchVNodeChildren } from './patchVNodeChildren';
import { replacePreviousElement } from './replacePreviousElement';
import { updateElement } from './updateElement';
import { vNodesAreEqual } from '../helpers';
export function patchVNode(formerVNode, vNode, moduleCallbacks, insertedVNodeQueue) {
    prepatchHooks(formerVNode, vNode, moduleCallbacks);
    vNode = updateElement(formerVNode, vNode);
    if (formerVNode === vNode)
        return;
    if (!vNodesAreEqual(formerVNode, vNode))
        return replacePreviousElement(formerVNode, vNode, moduleCallbacks, insertedVNodeQueue);
    updateHooks(formerVNode, vNode, moduleCallbacks);
    if (!vNode.text)
        patchVNodeChildren(formerVNode, vNode, moduleCallbacks, insertedVNodeQueue);
    else if (formerVNode.text !== vNode.text)
        vNode.element.textContent = vNode.text;
    postpatchHooks(formerVNode, vNode, moduleCallbacks);
}
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