Hello JavaScript Enthusiasts!Welcome to the sixth edition of "This Week in JavaScript"! Today, we’ve got some game-changing updates from Microsoft, the long-awaited Svelte 5 release, and the new Next.js 15 release—plus a whole lot more! Microsoft GenAIScript 2024 has been all about AI, and Microsoft is pushing the boundaries again with GenAIScript. This new tool lets developers use generative AI to automate tasks that traditionally require manual coding.Key Features: Prompt as Code: Automate code summarization, error checking, and data parsing using minimal JavaScript or TypeScript syntax. LLM Tools & Agents: Define tools and agents like Git assistants or weather data fetchers that interact seamlessly with LLM models. By defining these agents, developers can create reusable components that provide intelligent suggestions or perform specific functions based on LLM prompts. File Manipulation: Extract, analyze, and manipulate data from PDFs, DOCX, CSVs, and more, making it ideal for data-heavy projects. Whether it’s converting a PDF to text or extracting tables from CSV files, developers can automate these tedious processes, which are often prone to errors when done manually. GitHub Integration & CI/CD Automation: With built-in support for GitHub Models and Copilot, as well as automated GitHub Actions, developers can leverage LLMs to handle pull request reviews, commit message generation, and even integrate into CI/CD pipelines. Svelte 5 Is Finally Here After 18 months of development, version 5 marks the most significant update in Svelte’s history. This is a complete revamp, focusing on improving app performance, reducing bundle size, and simplifying reactivity.But, what changed? Runes & Reactivity: Introduces "runes" for cleaner reactive state management, replacing the old $: construct. This change simplifies state handling by making dependencies more explicit, avoiding common pitfalls with the previous system. Native TypeScript: Full TypeScript support, no more preprocessors needed. Backward Compatibility: Svelte 5 offers a mostly seamless upgrade from Svelte 4, with migration tools for easy transition. This backward compatibility ensures that developers can migrate gradually, without having to rewrite their entire application from scratch. The migration tools automate much of the process, minimizing downtime. Improved Event Handling: Event handlers are now treated as props, making component composition more intuitive. This change allows developers to more easily manage event propagation and conditional handling, streamlining the creation of reusable components, especially for large applications and libraries. Next.js 15: The Speed King Next.js 15 has finally been released! This version focuses on improving both stability and speed. Here’s all you need to know: @next/codemod CLI: Automates code upgrades, making it easier to update Next.js and React versions. With this tool, you can avoid manual refactoring when upgrading, ensuring your codebase stays clean and efficient. Turbopack Dev: Boosts development speed with up to 96% faster code updates. Turbopack is set to replace Webpack as the default bundler, offering blazing-fast rebuild times, especially in large projects. Static Route Indicators: New visual cues for static routes during development provide immediate feedback, helping you optimize performance for individual pages and track which routes are truly static for better caching and rendering. Automatic Image Optimization Enhancements: Image optimization is now built-in by default, removing the need for manual configuration. This means you get optimized images (including resizing, lazy loading, and WebP support) automatically, allowing developers to focus on building features rather than handling image performance. Tools & Releases You Should Know About Let’s speed-run through some of the other big tool updates this week! React Native 0.76: The new default architecture delivers smoother app performance, improved debugging, and smaller Android app sizes. Bun’s Latest Update: Experimental CSS parsing and bytecode compilation options boost development speed by 2x. Plus, bun publish makes npm package publishing a breeze. ExpressJS v5: After a decade of waiting, Express 5 is here with modernized security features, improved route patterns, and enhanced support for promises. Transformers.js v3: Running machine learning models in JavaScript just got faster thanks to WebGPU support. Now you can execute real-time tasks right in the browser! eslint-plugin-functional: This plugin enforces functional programming principles in JavaScript and TypeScript by blocking mutation and encouraging immutability, helping you write cleaner, more reliable code. That’s a wrap for this week! If you found these JavaScript updates useful, give this post an upvote to help others discover it. Don’t forget to share it with your fellow developers, and keep an eye out for more insights in the JavaScript world. Until next time, keep coding and stay curious! References Microsoft GenAIScript Svelte 5 Update Next.js 15 React Native 0.76 Bun v1.1.33 ExpressJS v5 Transformers.js v3 eslint-plugin-functional Hello JavaScript Enthusiasts! Welcome to the sixth edition of " This Week in JavaScript "! This Week in JavaScript Today, we’ve got some game-changing updates from Microsoft, the long-awaited Svelte 5 release, and the new Next.js 15 release—plus a whole lot more! Microsoft GenAIScript Microsoft GenAIScript 2024 has been all about AI, and Microsoft is pushing the boundaries again with GenAIScript . This new tool lets developers use generative AI to automate tasks that traditionally require manual coding. Key Features: Microsoft GenAIScript Key Features: Prompt as Code: Automate code summarization, error checking, and data parsing using minimal JavaScript or TypeScript syntax. Prompt as Code: Automate code summarization, error checking, and data parsing using minimal JavaScript or TypeScript syntax. Prompt as Code: LLM Tools & Agents: Define tools and agents like Git assistants or weather data fetchers that interact seamlessly with LLM models. By defining these agents, developers can create reusable components that provide intelligent suggestions or perform specific functions based on LLM prompts. LLM Tools & Agents: Define tools and agents like Git assistants or weather data fetchers that interact seamlessly with LLM models. By defining these agents, developers can create reusable components that provide intelligent suggestions or perform specific functions based on LLM prompts. LLM Tools & Agents: File Manipulation: Extract, analyze, and manipulate data from PDFs, DOCX, CSVs, and more, making it ideal for data-heavy projects. Whether it’s converting a PDF to text or extracting tables from CSV files, developers can automate these tedious processes, which are often prone to errors when done manually. File Manipulation: Extract, analyze, and manipulate data from PDFs, DOCX, CSVs, and more, making it ideal for data-heavy projects. Whether it’s converting a PDF to text or extracting tables from CSV files, developers can automate these tedious processes, which are often prone to errors when done manually. File Manipulation: GitHub Integration & CI/CD Automation: With built-in support for GitHub Models and Copilot, as well as automated GitHub Actions, developers can leverage LLMs to handle pull request reviews, commit message generation, and even integrate into CI/CD pipelines. GitHub Integration & CI/CD Automation: With built-in support for GitHub Models and Copilot, as well as automated GitHub Actions, developers can leverage LLMs to handle pull request reviews, commit message generation, and even integrate into CI/CD pipelines. GitHub Integration & CI/CD Automation: Svelte 5 Is Finally Here Svelte 5 Is Finally Here After 18 months of development, version 5 marks the most significant update in Svelte ’s history. This is a complete revamp, focusing on improving app performance, reducing bundle size, and simplifying reactivity. But, what changed? Svelte But, what changed? Runes & Reactivity: Introduces "runes" for cleaner reactive state management, replacing the old $: construct. This change simplifies state handling by making dependencies more explicit, avoiding common pitfalls with the previous system. Runes & Reactivity: Introduces "runes" for cleaner reactive state management, replacing the old $: construct. This change simplifies state handling by making dependencies more explicit, avoiding common pitfalls with the previous system. Runes & Reactivity: Native TypeScript: Full TypeScript support, no more preprocessors needed. Native TypeScript: Full TypeScript support, no more preprocessors needed. Native TypeScript: Backward Compatibility: Svelte 5 offers a mostly seamless upgrade from Svelte 4, with migration tools for easy transition. This backward compatibility ensures that developers can migrate gradually, without having to rewrite their entire application from scratch. The migration tools automate much of the process, minimizing downtime. Backward Compatibility: Svelte 5 offers a mostly seamless upgrade from Svelte 4, with migration tools for easy transition. This backward compatibility ensures that developers can migrate gradually, without having to rewrite their entire application from scratch. The migration tools automate much of the process, minimizing downtime. Backward Compatibility: Improved Event Handling: Event handlers are now treated as props, making component composition more intuitive. This change allows developers to more easily manage event propagation and conditional handling, streamlining the creation of reusable components, especially for large applications and libraries. Improved Event Handling: Event handlers are now treated as props, making component composition more intuitive. This change allows developers to more easily manage event propagation and conditional handling, streamlining the creation of reusable components, especially for large applications and libraries. Improved Event Handling: Next.js 15: The Speed King Next.js 15: The Speed King Next.js 15 has finally been released! This version focuses on improving both stability and speed. Next.js 15 Here’s all you need to know: Here’s all you need to know: @next/codemod CLI: Automates code upgrades, making it easier to update Next.js and React versions. With this tool, you can avoid manual refactoring when upgrading, ensuring your codebase stays clean and efficient. @next/codemod CLI: Automates code upgrades, making it easier to update Next.js and React versions. With this tool, you can avoid manual refactoring when upgrading, ensuring your codebase stays clean and efficient. @next/codemod CLI: Turbopack Dev: Boosts development speed with up to 96% faster code updates. Turbopack is set to replace Webpack as the default bundler, offering blazing-fast rebuild times, especially in large projects. Turbopack Dev: Boosts development speed with up to 96% faster code updates. Turbopack is set to replace Webpack as the default bundler, offering blazing-fast rebuild times, especially in large projects. Turbopack Dev: Static Route Indicators: New visual cues for static routes during development provide immediate feedback, helping you optimize performance for individual pages and track which routes are truly static for better caching and rendering. Static Route Indicators: New visual cues for static routes during development provide immediate feedback, helping you optimize performance for individual pages and track which routes are truly static for better caching and rendering. Static Route Indicators: Automatic Image Optimization Enhancements: Image optimization is now built-in by default, removing the need for manual configuration. This means you get optimized images (including resizing, lazy loading, and WebP support) automatically, allowing developers to focus on building features rather than handling image performance. Automatic Image Optimization Enhancements: Image optimization is now built-in by default, removing the need for manual configuration. This means you get optimized images (including resizing, lazy loading, and WebP support) automatically, allowing developers to focus on building features rather than handling image performance. Automatic Image Optimization Enhancements: Tools & Releases You Should Know About Tools & Releases You Should Know About Let’s speed-run through some of the other big tool updates this week! React Native 0.76: The new default architecture delivers smoother app performance, improved debugging, and smaller Android app sizes. React Native 0.76: The new default architecture delivers smoother app performance, improved debugging, and smaller Android app sizes. React Native 0.76: Bun’s Latest Update: Experimental CSS parsing and bytecode compilation options boost development speed by 2x. Plus, bun publish makes npm package publishing a breeze. Bun’s Latest Update: Experimental CSS parsing and bytecode compilation options boost development speed by 2x. Plus, bun publish makes npm package publishing a breeze. Bun’s Latest Update: ExpressJS v5: After a decade of waiting, Express 5 is here with modernized security features, improved route patterns, and enhanced support for promises. ExpressJS v5: After a decade of waiting, Express 5 is here with modernized security features, improved route patterns, and enhanced support for promises. ExpressJS v5: Transformers.js v3: Running machine learning models in JavaScript just got faster thanks to WebGPU support. Now you can execute real-time tasks right in the browser! Transformers.js v3: Running machine learning models in JavaScript just got faster thanks to WebGPU support. Now you can execute real-time tasks right in the browser! Transformers.js v3: eslint-plugin-functional: This plugin enforces functional programming principles in JavaScript and TypeScript by blocking mutation and encouraging immutability, helping you write cleaner, more reliable code. eslint-plugin-functional: This plugin enforces functional programming principles in JavaScript and TypeScript by blocking mutation and encouraging immutability, helping you write cleaner, more reliable code. eslint-plugin-functional: That’s a wrap for this week! If you found these JavaScript updates useful, give this post an upvote to help others discover it. Don’t forget to share it with your fellow developers, and keep an eye out for more insights in the JavaScript world. Until next time, keep coding and stay curious! References Microsoft GenAIScript Microsoft GenAIScript Svelte 5 Update Svelte 5 Update Next.js 15 Next.js 15 React Native 0.76 React Native 0.76 Bun v1.1.33 Bun v1.1.33 ExpressJS v5 ExpressJS v5 Transformers.js v3 Transformers.js v3 eslint-plugin-functional eslint-plugin-functional

Generative AI in JavaScript? Microsoft GenAIScript, Svelte 5, Next.js 15 and More - This Week in JS

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