Fitz framework achieves dual-target UI: same components run on server and browser

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The Fitz framework's companion UI library, previously limited to server-side rendering, now compiles all 38 components to both server-rendered HTML and client-side WebAssembly using a single source file. Developers can switch compilation targets via a compiler flag rather than maintaining separate codebases for server and client. Three core technical barriers were resolved: raw HTML injection for SVG icons, support for list-driven components like Select and BarChart, and local list construction inside helper functions. Two additional components, Pager and ConfirmDialog, required a new mechanism to handle fall-through events that previously had no meaning in a browser-only context. The live gallery now runs 22 companion components compiled to WebAssembly, with no parallel hand-written client versions needed.

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Guide outlines how to build security-audited AI chat interfaces in TypeScript

A technical guide published on DEV Community details how frontend engineers can build production-grade AI chat applications in TypeScript that meet enterprise security standards. The article addresses growing threats such as prompt injection attacks, PII leakage, and supply chain vulnerabilities, which have raised the security bar for AI-facing interfaces in 2024. It walks through a full development lifecycle using Vercel's assistant-ui library alongside a Next.js backend-for-frontend proxy, ensuring LLM API keys are never exposed directly to the browser. Key steps covered include strict TypeScript configuration, dependency hygiene with pnpm, context sanitization, PII redaction, and automated security scanning. The guide targets compliance with frameworks such as OWASP Top 10 for AI, SOC 2, and ISO 27001.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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