Obsidian LeetCode replace urls with problem notes

Script.js

(async () => {
    debugger;

    const mdFiles = app.vault.getMarkdownFiles().filter(f => f.path.startsWith('Programming/LeetCode/'));

    const problemFiles = mdFiles.filter(f => f.path.startsWith('Programming/LeetCode/Problems/'));

    const urlNoteMap = new Map();

    for (const problemFile of problemFiles) {
        const note = await app.vault.read(problemFile);
        const match = note.match('source: (.+)');
        if (!match) {
            continue;
        }
        const url = match[1];
        urlNoteMap.set(url, problemFile);
    }

    for (const mdFile of mdFiles) {
        console.log(mdFile.path);

        await app.vault.process(mdFile, note => {
            const newNote = note.replaceAll(/\((https:\/\/leetcode.com\/problems\/.+?)\)/g, function(_, url) {
                const problemFile = urlNoteMap.get(url);
                if (!problemFile) {
                    return `(${url})`;
                }
                return app.fileManager.generateMarkdownLink(problemFile, mdFile.path, '' , 'x').substring('[x]'.length);
            });

            if (note !== newNote){
                console.log('CHANGED');
            } else {
                console.log('NOT CHANGED');
            }

            return newNote;
        });
    }
})();