Nodejs implementation of creating the chromium bookmark checksum. Fork of python version.

calculate_chrome_bookmark_checksum.js

import { createHash } from 'crypto';

// See https://gist.github.com/simon816/afde4d57d5dab8e80120e35596008834
// See https://chromium.googlesource.com/chromium/src/+/master/components/bookmarks/browser/bookmark_codec.cc

const regenChecksum = (roots) => {
	const digest = createHash('md5');
	const digestUrl = (url) => {
		digest.update(url['id'],'ascii');
		digest.update(url['name'],'utf16le');
		digest.update(Buffer.from('url'));
		digest.update(url['url'], 'ascii');
	}

	const digestFolder = (folder) => {
		digest.update(folder['id'],'ascii');
		digest.update(folder['name'],'utf16le');
		const bytes = Buffer.from('folder');
		digest.update(bytes);
		folder['children']?.forEach((child) => {
			updateDigest(child);
		})
	}

	const updateDigest = (node) => {
		node.type === 'folder' ? digestFolder(node) : digestUrl(node)
	}

  updateDigest(roots['bookmark_bar'])
	updateDigest(roots['other'])
	updateDigest(roots['synced'])
	return digest.digest('hex');
}