XtremeJS 2023
2023-11-21
-- online --
XtremeJS ·
[XtremeJS 2021, XtremeJS 2022, XtremeJS 2023, XtremeJS 2024, XtremeJS 2025]
who it's for
frontend engineers, javascript developers, web performance engineers, web security engineers, frontend architects, platform engineers, site reliability engineers
topics
ECMAScript 2023 features; unused assignments linting; cognitive complexity refactoring; Content Security Policy deployment; Subresource Integrity with crossorigin; progressive HTML streaming; partial hydration strategies; zero-KB initial JavaScript; bundle analysis and code splitting; service worker caching and prefetching; WebAssembly on WASI; multi-tenant Next.js with ISR
| title | author | length |
|---|---|---|
| The Top 5 JavaScript Issues in All Our Codebases | Phil Nash | 25m |
Sona Cloud scans hundreds of millions of JavaScript lines and reports the top five static issues: unused assignments, using double equals/not equals, commented… | ||
| A Deep Dive into ECMAScript 2023 Features | Dmitrii Ivashchenko | 26m |
Adds concrete APIs and examples: findLast/findLastIndex returns 9 for [2,4,7,6,9] and returns index 3 for the last "test" occurrence, change‑by‑copy gives… | ||
| How to Improve Your Web Application’s Security using Mozilla Observatory | Karan Kiri | 21m |
Runs a Mozilla Observatory scan of a real personal site and shows the overall score plus per-metric failure reasons, then implements fixes: adds a locked-down… | ||
| Beyond the Basics: Securing JavaScript Applications | Joshua Arvin Lat | 27m |
Shows a working eval-based injection where user input creates a file then spawns a reverse shell, demonstrating how a single vulnerable JS handler can lead to… | ||
| Road to Zero Lint Failures: Tackling Code Quality Challenges at Scale | Chris Ng | 24m |
Large legacy app with ~24,000 files and ~7,000 lint errors gets a structured cleanup that removes almost 6,000 failures over ~1 year with 55 engineers, using… | ||
| Progressive HTML Rendering 101 | Damodaran S | 26m |
Claims that streaming HTML and async fragment rendering shrink the blank-page window and make pages visible and usable sooner, demonstrated with a Node http… | ||
| Secret Shortcuts of Loading Web Performance | Nikola Mitrovic | 37m |
JavaScript is named the main bottleneck and the demo shows concrete fixes: gzip/brotli, tree‑shaking, bundle analysis with BundlePhobia and import‑cost, and… | ||
| Beyond the browser: Moving forward with a more Declarative Future with WebAssembly | Shivay Lamba | 37m |
WebAssembly moves beyond the browser into edge and serverless with concrete numbers and tools: Rust compiled via wasm32-wasi using cargo produces tiny modules… | ||
| Why don’t the browser’s Dev Tools understand Your Code? | Steven Schkolne | 37m |
Claims that browser DevTools can actually understand source-level UI now and demonstrates a prototype called Ed that instruments a running app via a local… | ||
| Building Scalable Multi-Tenant Frontend Architecture for a B2B E-Commerce Platform | Guilherme Dalla Rosa | 37m |
A single frontend replaces per-tenant Fargate stacks by running Next.js on Vercel at the CDN edge, cutting infrastructure duplication and onboarding time; the… | ||
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