extra-dom/lib/flat-map.js

Utilities for DOM

import { clone, cloneNodes, copyNodesToChildNodes } from "./utils.js";
import { removeAllChildren } from "./remove-all-children.js";
export function flatMap(node, fn) {
    const newNodes = cloneNodes(fn(clone(node)));
    return newNodes.map(node => {
        const newChildNodes = [];
        for (const childNode of node.childNodes) {
            newChildNodes.push(...cloneNodes(flatMap(childNode, fn)));
        }
        removeAllChildren(node);
        copyNodesToChildNodes(newChildNodes, node);
        return node;
    });
}
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