unist-util-visit-parents

import { visitParents, SKIP } from 'unist-util-visit-parents'; import { fromMarkdown } from 'mdast-util-from-markdown'; import type { Root, Paragraph, Strong, PhrasingContent } from 'mdast'; const markdownInput = 'This is a *test* with **strong** emphasis and `code` blocks.'; const tree: Root = fromMarkdown(markdownInput); console.log('Original Tree:'); console.log(JSON.stringify(tree, null, 2)); // Example 1: Log all nodes and their direct parent types visitParents(tree, (node, ancestors) => { const parentTypes = ancestors.length > 0 ? ancestors.map(p => p.type).join(' > ') : 'Root'; console.log(`- Node Type: ${node.type}, Parents: ${parentTypes}`); }); // Example 2: Skip children of 'strong' nodes and modify content visitParents<Strong>(tree, 'strong', (node, ancestors) => { console.log(`\nVisiting strong node: ${node.value || ''}`); if (node.children && node.children.length > 0 && node.children[0].type === 'text') { node.children[0].value = (node.children[0].value || '') + ' (MODIFIED)'; console.log(` Modified strong text. Skipping its children for further traversal.`); } return SKIP; // Do not traverse children of this 'strong' node }); console.log('\nModified Tree (strong nodes updated and their children skipped):'); console.log(JSON.stringify(tree, null, 2)); // Example 3: Find a specific node type and its ancestors, then exit let foundCode = false; visitParents<PhrasingContent>(tree, 'inlineCode', (node, ancestors) => { console.log(`\nFound inlineCode: ${node.value}`); console.log(' Ancestors:', ancestors.map(a => a.type)); foundCode = true; return true; // Use true (CONTINUE) or EXIT to stop, depending on requirement }); if (!foundCode) { console.log('\nNo inlineCode nodes found.'); }