The latest articles on DEV Community by Loc Nguyen (@vanloctech1). https://dev.to/vanloctech1 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F2636559%2Fcd12d0c8-81ee-4d56-9607-8c75e09da23b.jpg https://dev.to/vanloctech1 en Loc Nguyen Tue, 17 Mar 2026 03:36:05 +0000 https://dev.to/vanloctech1/high-performance-bun-optimized-excel-and-csv-library-for-typescript-work-with-bun-s3-5o3 https://dev.to/vanloctech1/high-performance-bun-optimized-excel-and-csv-library-for-typescript-work-with-bun-s3-5o3 <p>Github: <a href="https://github.com/vanloctech/bun-excel" rel="noopener noreferrer">https://github.com/vanloctech/bun-excel</a><br> NPM: <a href="https://www.npmjs.com/package/bun-excel" rel="noopener noreferrer">https://www.npmjs.com/package/bun-excel</a></p> <h2> Why This Package </h2> <ul> <li> <strong>Built for Bun, not adapted from Node-first abstractions</strong> — The core file paths use <code>Bun.file()</code>, <code>Bun.write()</code>, <code>FileSink</code>, and Bun-native streaming APIs directly.</li> <li> <strong>Works naturally with Bun-native file targets, including S3</strong> — Read from and write to local paths, <code>Bun.file(...)</code>, and Bun <code>S3File</code> objects, including direct streaming exports to S3 destinations.</li> <li> <strong>Production export helpers for Bun backends</strong> — Supports progress callbacks, <code>AbortSignal</code>, export diagnostics, streaming <code>Response</code> helpers, and S3 multipart tuning through Bun-native writer options.</li> <li> <strong>TypeScript-first spreadsheet model</strong> — <code>Workbook</code>, <code>Worksheet</code>, <code>Row</code>, <code>Cell</code>, and style objects are explicit and practical to work with in Bun apps.</li> <li> <strong>Focused on real report workflows</strong> — Styles, formulas, hyperlinks, data validation, conditional formatting, auto filters, freeze/split panes, and workbook metadata are supported where they matter for business exports.</li> <li> <strong>Multiple write strategies for different workloads</strong> — Use normal writes for simplicity, stream writes for lower memory pressure, and chunked disk-backed writes for large exports.</li> </ul> <h2> Benchmarks </h2> <p>Measured on Bun <code>1.3.10</code> / <code>MacOS ARM</code> with a single worksheet, compressed <code>.xlsx</code>, and <code>1,000,000</code> rows x <code>10</code> columns:</p> <div class="table-wrapper-paragraph"><table> <thead> <tr> <th>Mode</th> <th>Total time</th> <th>Finalize time</th> <th>Rows/sec</th> <th>Peak RSS</th> <th>Peak heapUsed</th> <th>File size</th> </tr> </thead> <tbody> <tr> <td><code>createExcelStream()</code></td> <td><code>13.1s</code></td> <td><code>8.9s</code></td> <td><code>76,363</code></td> <td><code>110.6MB</code></td> <td><code>5.1MB</code></td> <td><code>54.33MB</code></td> </tr> <tr> <td><code>createChunkedExcelStream()</code></td> <td><code>11.9s</code></td> <td><code>8.5s</code></td> <td><code>84,029</code></td> <td><code>120.9MB</code></td> <td><code>5.1MB</code></td> <td><code>54.33MB</code></td> </tr> </tbody> </table></div> <p><code>createExcelStream()</code> now uses the same disk-backed low-memory path as the chunked writer for single-sheet exports, so the numbers are expected to be close. Re-run the large benchmark on your machine with:</p> bunjs typescript exceljs Loc Nguyen Wed, 21 Jan 2026 17:27:45 +0000 https://dev.to/vanloctech1/open-source-download-high-quality-videos-without-ads-or-paywalls-base-on-yt-dlp-1kh2 https://dev.to/vanloctech1/open-source-download-high-quality-videos-without-ads-or-paywalls-base-on-yt-dlp-1kh2 <p><strong>A modern, beautiful YouTube video downloader built with Tauri and React</strong></p> <p>Download Latest Release: <a href="https://github.com/vanloctech/youwee/releases/latest" rel="noopener noreferrer">https://github.com/vanloctech/youwee/releases/latest</a></p> <p>Source Code: <a href="https://github.com/vanloctech/youwee" rel="noopener noreferrer">https://github.com/vanloctech/youwee</a></p> <p>Report a Bug: Please use the "Bug Report" flair or open an issue on GitHub.</p> <h2> Features </h2> <ul> <li> <strong>Batch Downloads</strong> - Download multiple videos at once</li> <li> <strong>Playlist Support</strong> - Download entire YouTube playlists</li> <li> <strong>Multiple Quality Options</strong> - From 360p to 4K Ultra HD</li> <li> <strong>Subtitle Support</strong> - Ability to embed subtitles into videos or save them as separate files.</li> <li> <strong>Batch Downloading</strong> - Support for downloading multiple videos simultaneously.</li> <li> <strong>Expanded Compatibility</strong> - Added support for 1800+ websites powered by yt-dlp.</li> <li> <strong>Download Management</strong> - Added Download History and Library sections.</li> <li> <strong>8K Resolution Support</strong> - High-quality video downloading now supports up to 8K resolution.</li> <li> <strong>Developer Tools</strong> - Added access to yt-dlp logs and execution commands for debugging.</li> <li> <strong>Audio Extraction</strong> - Extract audio in MP3, M4A, or Opus formats</li> <li> <strong>6 Beautiful Themes</strong> - Midnight, Aurora, Sunset, Ocean, Forest, Candy</li> <li> <strong>Dark/Light Mode</strong> - Choose your preferred appearance</li> <li> <strong>H.264 Codec</strong> - Maximum compatibility with all players</li> <li> <strong>File Size Estimation</strong> - Know the size before downloading</li> <li> <strong>Fast &amp; Lightweight</strong> - Built with Tauri for minimal resource usage</li> <li> <strong>No External Dependencies</strong> - yt-dlp bundled with the app</li> </ul> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F6vc6anlo3lpkbzmdlv22.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F6vc6anlo3lpkbzmdlv22.png" alt="Youwee" width="800" height="684"></a></p> youtube ytdlp opensource