Rajesh kumar

Frontend Engineer. Mentor. Speaker. I am a JavaScript enthusiast. I love talking about the Web and exploring new technologies.

[Julio Casal @julioc]

Microsoft Build 2025 just dropped tons of new stuff for devs.

Here’s what’s new:

𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝟯𝟲𝟱 𝗖𝗼𝗽𝗶𝗹𝗼𝘁 𝗧𝘂𝗻𝗶𝗻𝗴
Use your own company data to fine-tune Copilot responses.

𝗔𝗴𝗲𝗻𝘁𝟮𝗔𝗴𝗲𝗻𝘁 𝗶𝗻 𝗧𝗲𝗮𝗺𝘀
Let agents securely talk and work together inside Teams.

𝗔𝗴𝗲𝗻𝘁𝘀 𝗧𝗼𝗼𝗹𝗸𝗶𝘁 𝗳𝗼𝗿 𝗩𝗦
Build enterprise-grade agents in Visual Studio.

𝗔𝗴𝗲𝗻𝘁𝘀 𝗦𝗗𝗞
Programmatic access to M365 data for custom agents.

𝗖𝗼𝗽𝗶𝗹𝗼𝘁 𝗔𝗣𝗜𝘀
Connect your app’s data to Copilot with structured APIs.

𝗔𝗴𝗲𝗻𝘁 𝗦𝘁𝗼𝗿𝗲
A marketplace to discover and deploy Microsoft 365 agents.

𝗠𝗖𝗣 𝗶𝗻 𝗖𝗼𝗽𝗶𝗹𝗼𝘁 𝗦𝘁𝘂𝗱𝗶𝗼
Use Model Context Protocol to wire tools and actions into flows.

𝗖𝗼𝗽𝗶𝗹𝗼𝘁 𝗣𝗮𝗴𝗲𝘀
Turn Copilot answers into editable, shareable content.

𝗔𝘇𝘂𝗿𝗲 𝗔𝗜 𝗙𝗼𝘂𝗻𝗱𝗿𝘆 𝗦𝗲𝗿𝘃𝗶𝗰𝗲
Now GA for building and chaining multi-agent systems.

𝗣𝗼𝘄𝗲𝗿 𝗕𝗜 𝗖𝗵𝗮𝘁
Ask questions in natural language, get answers with visuals.

𝗙𝗮𝗯𝗿𝗶𝗰 𝗗𝗶𝗴𝗶𝘁𝗮𝗹 𝗧𝘄𝗶𝗻 𝗕𝘂𝗶𝗹𝗱𝗲𝗿
Model systems with a no-code editor—now in public preview.

𝗣𝗼𝘀𝘁𝗴𝗿𝗲𝗦𝗤𝗟 𝗶𝗻 𝗩𝗦 𝗖𝗼𝗱𝗲
Explore Postgres with the new Azure extension for VS Code.

𝗦𝗤𝗟 𝗦𝗲𝗿𝘃𝗲𝗿 𝟮𝟬𝟮𝟱
Private preview adds vector support and AI search.

𝗖𝗼𝗽𝗶𝗹𝗼𝘁 𝗶𝗻 𝗦𝗦𝗠𝗦
Get help writing and debugging SQL in SSMS 21.

𝗣𝗹𝗮𝗻𝗲𝘁𝗮𝗿𝘆 𝗖𝗼𝗺𝗽𝘂𝘁𝗲𝗿 𝗣𝗿𝗼
Premium access to geospatial and environmental data APIs.

𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝗗𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆
Share and reuse scientific datasets and models.

𝗖𝗼𝗽𝗶𝗹𝗼𝘁 𝗰𝗼𝗱𝗶𝗻𝗴 𝗮𝗴𝗲𝗻𝘁
Copilot now reasons and edits code based on goals.

𝗦𝗥𝗘 𝗮𝗴𝗲𝗻𝘁
Get help resolving incidents with a new reliability-focused agent.

𝗚𝗶𝘁𝗛𝘂𝗯 𝗠𝗼𝗱𝗲𝗹𝘀
Self-host and fine-tune open-source models.

𝗢𝗽𝗲𝗻-𝘀𝗼𝘂𝗿𝗰𝗲 𝗖𝗼𝗽𝗶𝗹𝗼𝘁 𝗖𝗵𝗮𝘁
The VS Code Copilot Chat extension is now open source.

𝗠𝗖𝗣 𝗜𝗱𝗲𝗻𝘁𝗶𝘁𝘆 & 𝗔𝘂𝘁𝗵
Add secure access control to MCP-based agents.

𝗠𝗖𝗣 𝗥𝗲𝗴𝗶𝘀𝘁𝗿𝘆
Public registry for discovering trusted MCP servers.

𝗡𝗟𝗪𝗘𝗕
Spec that lets websites expose agent-ready conversational UIs.

𝗪𝗶𝗻𝗱𝗼𝘄𝘀 𝗔𝗜 𝗙𝗼𝘂𝗻𝗱𝗿𝘆
Run small LLMs locally with new APIs and tools.

𝗠𝗖𝗣 𝗼𝗻 𝗪𝗶𝗻𝗱𝗼𝘄𝘀
Apps and agents can now call each other securely.

𝗪𝗶𝗻𝗚𝗲𝘁 𝗖𝗼𝗻𝗳𝗶𝗴
Automate dev environments using declarative config files.

𝗪𝗦𝗟 𝗢𝗽𝗲𝗻 𝗦𝗼𝘂𝗿𝗰𝗲
Windows Subsystem for Linux is now fully open source.

𝗡𝗲𝘄 𝗖𝗟𝗜 𝗘𝗱𝗶𝘁𝗼𝗿
A new lightweight edit tool now ships with Windows.

𝗣𝗼𝘄𝗲𝗿 𝗔𝗽𝗽𝘀 𝗪𝗼𝗿𝗸𝘀𝗽𝗮𝗰𝗲
Copilot now helps structure and build solutions in Power Apps.

𝗔𝗴𝗲𝗻𝘁𝘀 𝗶𝗻 𝗣𝗼𝘄𝗲𝗿 𝗣𝗮𝗴𝗲𝘀
Embed agents into Power Pages for interactive customer flows.

𝗗𝘆𝗻𝗮𝗺𝗶𝗰𝘀 𝟯𝟲𝟱 𝗠𝗖𝗣 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻
Dynamics 365 apps now support agent-driven workflows.

Which announcement are you most excited—or skeptical—about?

--
Get my Free .NET Developer Roadmap 👇
https://t.co/Ed7r4wgPJK

[Rajesh kumar @iamRajace]

The much-anticipated React 19 is finally stable and ready for production! 🎉 Packed with groundbreaking features and optimizations, this version takes modern web development to the next level.
@chennaireact #React19

[Rajesh kumar @iamRajace]

@wesbos Great. Good to know. Thanks for the tip. Hope width: fit-content does the same

[Matt Pocock @mattpocockuk]

Node 22's experimental glob function is so freaking beautiful.

Brief 🧵

[Rajesh kumar @iamRajace]

The results of the first ever #StateOfReact survey are in! 🎉
Dive into the data & see how the React community is using React today: #ReactJS #WebDev @chennaireact, @ReactNexus, @react_india, @jslovers_del
https://t.co/BxsFLN3nd0

[Rajesh kumar @iamRajace]

I'm glad to share that, I had an incredible experience speaking at the @jslovers_del - 𝗖𝗵𝗲𝗻𝗻𝗮𝗶 𝗧𝗲𝗰𝗵 𝗠𝗲𝗲𝘁𝘂𝗽 on the topic "Build Stronger JavaScript Applications with TypeScript"! 🙌
Thanks to @jslovers_del and @talentshipio team for the opportunity.

[JSLovers @jslovers_del]

𝗔 𝗕𝗶𝗴 𝗧𝗵𝗮𝗻𝗸 𝗬𝗼𝘂 𝗖𝗵𝗲𝗻𝗻𝗮𝗶! 🙏

We had an incredible time at 𝗼𝘂𝗿 𝗳𝗶𝗿𝘀𝘁 @jslovers_del - 𝗖𝗵𝗲𝗻𝗻𝗮𝗶 𝗧𝗲𝗰𝗵 𝗠𝗲𝗲𝘁𝘂𝗽 yesterday (13th July, 2024)! 🚀 A huge thank you to everyone who joined us at @talentshipio and made it such a fantastic event. Your enthusiasm, questions, and contributions truly made the day special.

From insightful talks to engaging discussions, it was great to see our community come together to share knowledge and passion for JavaScript. 🌟

A special shoutout to our sponsor @talentshipio for supporting us and our speakers @arunkumarvallal @JSaferio @iamRajace for their amazing presentations.

Huge thanks to @vigneshInTech @ASyedAbdulRahm1 @arunkumarvallal @JyoCoOoL @chennaireact @iNikhilKumaran @vsurya1992 for their support and contribution to make this event a huge success!

We're already looking forward to our next meetup and continuing this journey together. Stay tuned for more updates!

cc @hellonehha @jaswantsandhu @ekaspreet93 @vrukshalii_ @preetiwadhwani_ @lakshayman2000 @imminal35 @divyansh @smileguptaaa

#JSTechMeetup #TechCommunity #JavaScript #Talentship #jslovers #chennai

[JSLovers @jslovers_del]

𝗩𝗮𝗻𝗻𝗮𝗸𝗮𝗺 𝗖𝗵𝗲𝗻𝗻𝗮𝗶 𝗗𝗲𝘃𝘀!! 🙏

We at @jslovers_del Chennai are thrilled to invite you to our upcoming tech meetup this 𝗦𝗮𝘁𝘂𝗿𝗱𝗮𝘆, 𝗝𝘂𝗹𝘆 𝟭𝟯𝘁𝗵, at @talentshipio, from 𝟮 𝗣𝗠 𝘁𝗼 𝟲 𝗣𝗠 🥳

𝗠͟𝗲͟𝗲͟𝘁͟ ͟𝗢͟𝘂͟𝗿͟ ͟𝗦͟𝗽͟𝗲͟𝗮͟𝗸͟𝗲͟𝗿͟𝘀͟:͟
1) @arunkumarvallal
Topic: "From ES6 to ES2024: The evolution of JavaScript"
Bio: React Native Developer, @TigerAnalytics

2) @JSaferio
Topic: "Dive into 3D : Exploring Three JS"
Bio: Software Engineer, @talentshipio

3) @iamRajace
Topic: "Build Stronger JavaScript Applications with TypeScript"
Bio: Senior Software Engineer, @pearson

This is a fantastic opportunity to expand your knowledge, connect with like-minded individuals, and be part of a vibrant tech community.

𝗗𝗼𝗻'𝘁 𝗺𝗶𝘀𝘀 𝗼𝘂𝘁 𝗼𝗻 𝘁𝗵𝗶𝘀 𝗰𝗵𝗮𝗻𝗰𝗲 𝘁𝗼 𝗴𝗿𝗼𝘄, 𝘀𝗵𝗮𝗿𝗲, 𝗮𝗻𝗱 𝗰𝗲𝗹𝗲𝗯𝗿𝗮𝘁𝗲 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿.

We look forward to seeing you there! ❤️

Register here: https://t.co/8qoTKuSXmo

cc @hellonehha @jaswantsandhu @ekaspreet93 @vigneshInTech

#jslovers #talentship #javascript #techmeetup #chennai

[JSLovers @jslovers_del]

We have our 3rd speaker @iamRajace delivering a session on TypeScript at JSLovers Chennai chapter 🌟

Rajesh will be diving deep into the world of Typescript, sharing insights and tips that you won't want to miss 🚀

If you haven't joined in-person, you can watch our livestream here
https://t.co/76u3FAS36t

@hellonehha @jaswantsandhu @ekaspreet93 @vigneshInTech

[JSLovers @jslovers_del]

JSLovers Chennai Chapter - Speaker Announcement 🥳

We are thrilled to announce our final speaker, @iamRajace , for the JSLovers Chennai meetup planned for 13th July. 🗓️

Join us for an exciting session on "Building Stronger JavaScript Applications with TypeScript". Special thanks to our proud sponsor, @talentshipio

cc @hellonehha @jaswantsandhu @ekaspreet93 @vigneshInTech

#jslovers #meetup #javascript #js #chennai #devs

[React Bangalore @ReactBangalore]

🚨 Giveaway Alert 🚨

We are giving away 5 @ReactNexus tickets.

Retweet this to participate in the giveaway and help us spread the word about React Nexus.

We will randomly pick 5 winners on Friday
https://t.co/RrxSPG4LCn

[Rajesh kumar @iamRajace]

Attended an awesome React Chennai meetup! 🚀 Engaging talks, vibrant discussions, and connecting with talented developers made it an unforgettable evening. Huge thanks to @talentshipio and their fantastic team for hosting us! 👏 @chennaireact @react_india

[Rajesh kumar @iamRajace]

@msomuin Congratulations!

[Cory House @housecor]

Bun 1.0 is here and it’s shockingly compelling.

Bun is a lightning fast runtime, build tool, bundler, package manager, and testing tool, all rolled into one.

Bun replaces Node, npm, Yarn, pnpm, tsc, Jest, Vite, esbuild, Babel, webpack, and much more.

https://t.co/W3pMWHgZjg

[Rajesh kumar @iamRajace]

@wesbos Yes, I used it long back.

[Wes Bos @wesbos]

🔥 JavaScript Sets are about to become a lot more useful with these 7 new methods:

.difference()
.intersection()
.symmetricDifference()
.union()
.isSubsetOf()
.isSupersetOf()
.isDisjointFrom()

[Rob Palmer @robpalmer2]

ECMAScript excitement 😉

This week @TC39 advanced these proposals 🎉

3️⃣ Array Grouping
3️⃣ Promise.withResolvers
3️⃣ Source Phase Imports
3️⃣ Time Zone Canonicalization
2️⃣ Deferred Import Evaluation
1️⃣ DataView get/set Uint8Clamped methods
1️⃣ Optional Chaining assignment

[Rajesh kumar @iamRajace]

@S_PADMANABAN_1 Congratulations 🎉

[GDG Chennai @GDGChennai]

📢 Calling all the Android developers based out of Chennai

Apply for our next workshop on Kotlin Multi Platform hosted by @msomuin & @shangeethsivan

📄 https://t.co/zAWSm1vjVj
🔗 https://t.co/O0hXgn6wYN

[Maximiliano Firtman @firt]

What's new in CSS #WWDC23 session is amazing.

It's one of the best web sessions at a WWDC I've ever seen.

With clear ideas, good examples, and excellent diagrams, it answers most questions with an engaging script and delivery. 💯

Congrats, @jensimmons 👏https://t.co/QnrmoEkpJD