jsday 2023
2023-04-13..2023-04-14
-- online --
jsday ·
[jsDay 2017, jsDay 2018, JSDay 2019, jsday 2020, jsday 2021, jsday 2022, jsday 2023, jsday 2024, jsday 2025]
who it's for
frontend developers, full stack developers, backend developers, devops and cloud engineers, web performance engineers, developer tools engineers, AI engineers, web3 developers
topics
browser DevTools debugging; JavaScript full-text search; resilient cloud API design; Node.js serverless lambdas; edge micro-frontend architectures; micro-frontends discovery; AI-enhanced web interfaces; web3 API integrations; front-end framework trends 2023; Babel migration CommonJS to ESM; image optimization for web; Astro island architecture
| title | author | length |
|---|---|---|
| Debugging & DevTools | Jecelyn Yeen | 42m |
Chrome DevTools now surfaces concrete fixes: Group by author and hide ignored sources reorder sources so original TypeScript/TS files appear above minified… | ||
| Designing and building resilient backend APIs in the cloud | Sara Gerion | 43m |
Shows a serverless stack using S3, CloudFront, API Gateway, AWS Lambda and DynamoDB with EventBridge-driven decoupling, logging, metrics and tracing pushed to… | ||
| Lyra: Disrupting full-text search industry with JavaScript | Michele Riva | 27m |
A JavaScript full‑text search engine claims Lucene‑grade speed while running anywhere JS runs and reducing deployment and cost pain. It indexes 20,000 products… | ||
| Everything's better with friends | Sunil Pai | 31m |
Claims that real-time collaborative apps become practical by pushing sync to the edge and using process-isolated documents. Uses Cloudflare Durable Objects and… | ||
| Production-ready lambdas with Node.js | Luciano Mammino | 41m |
Shows a working Node.js HTTP status checker and walks through concrete steps to make Lambdas production ready: use AWS SAM for infrastructure as code, add… | ||
| Powering up Micro-frontends at the Edge! | Gift Egwuenu | 33m |
Shows an actual migration path: break a legacy SPA into independently deployed fragments running on Cloudflare Workers, stream their responses into a parent… | ||
| Building AI-enhanced User Interfaces for the Web | Jani Eväkallio | 46m |
Builds a working, real-time collaborative AI-assisted editor in TypeScript that actually syncs AI and human edits using Yjs CRDT documents, a BFF, and a vector… | ||
| Implementing web3 via APIs is still decentralized? | Soumaya Erradi | 33m |
Argues that routing frontend → backend → public node → smart contract often improves UX while still leaving on‑chain logic decentralized, demonstrates an NFT… | ||
| Micro-frontends discovery | Luca Mezzalira | 36m |
Claims that micro-frontends need discoverability and delivers an open source Frontend Discovery Service that uses a simple JSON schema, serverless AWS… | ||
| The state of frontend frameworks in 2023 | Tejas Kumar | 40m |
Shows concrete demos and measurements: a hand-rolled Node server using render-to-pipeable-stream to stream React, client bundle ~1MB and server bundle ~2MB… | ||
| Migrating Babel from CommonJS to ESM | Nicolò Ribaudo | 36m |
Babel migrates by changing concrete parts not slogans: tests move first, Babel adds an importInteropNode option to ignore _interop flags, and a single codebase… | ||
| Screw the Browser! Build ChatGPT via SMS | Lizzie Siegle | 28m |
Builds a ChatGPT-style bot over SMS/WhatsApp using the OpenAI API and Twilio, implemented in JavaScript with the Twilio serverless toolkit and text-davinci-003… | ||
| Multimedia file management in web applications | Martina Lilla | 30m |
Claims a working serverless pipeline that converts nonbrowser formats into web‑playable assets, built with Typescript, NodeJS, fluent-ffmpeg and deployed as… | ||
| The top 5 JavaScript issues in all our codebases | Phil Nash | 42m |
Data from thousands of projects on SonarCloud and SonarQube shows five concrete problems: the single biggest issue is widespread use of var instead of let or… | ||
| A picture is worth a thousand…kilobytes. | Tamas Piros | 45m |
99.9% of pages request at least one image and Cloudinary sees ~199 billion image requests/month, so image weight matters: examples show progressive JPEG… | ||
| It's still getting better: new(ish) JavaScript you can use today | Daniel Gallagher | 28m |
Shows concrete, battle‑tested JavaScript features used at Subito: delete operator used to remove keys from filter objects and thereby avoid extra copying… | ||
| Astro & island architectures: build fast and SEO friendly websites | Fabio Biondi | 37m |
Astro 2.0 is presented as a framework for building fast, SEO-friendly sites by pre-rendering pages (SSG) so they can ship zero JavaScript initially, then… | ||
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