Advanced

Popular technology stack for modern web application development

HTML/CSS/JS

You can learn these skills for free at w3schools without buying books. The content on the following two websites is also free:

• https://web.dev/
• https://developer.mozilla.org/en-US/

Git

Basic code management skills are required. Initially, you won't need overly complex skills; you only need to know how to clone a repository, pull code, and commit code. You can have Langcli teach you how to use Git.
Develop the habit of committing code to GitHub to prevent code loss due to local computer malfunctions.

Next.js 16 · React · TypeScript · Tailwind css · shadcn/ui

Next.js 16 brings powerful advantages for modern frontend development. Its most notable benefit is the integrated API layer—you can build full‑stack applications without reaching for an additional backend framework. Using the App Router, you simply create route.ts (or .js) files inside the app/api/ directory. Each file becomes a serverless endpoint supporting GET, POST, PUT, DELETE, and more. This eliminates the need for Express, Fastify, or similar tools, reducing project complexity and bundle size.

Beyond APIs, Next.js 16 offers:

• Server Components – Render pages on the server for faster initial load and better SEO.
• Partial Prerendering – Combine static and dynamic content in the same route.
• Improved Turbopack – Near‑instant hot reloads for a smoother development experience.
• Built‑in optimizations – Automatic image, font, and script optimization out of the box.

By keeping your frontend and backend logic in one codebase, Next.js 16 streamlines development, deployment, and maintenance. You get the full power of React with the simplicity of unified API routes—no extra frameworks required.

Database

You need to learn how to use a relational database, such as PostgreSQL or MySQL. Because modern, even slightly complex website applications need to use databases to store user data or articles.

Prisma

Prisma ORM is an open-source ORM that provides fast, type-safe access to Postgres, MySQL, SQLite, and other databases, and runs smoothly across Node.js, Bun, and Deno.

LLM models

DeepSeek v4 is a game changer. For me, Langcli + DeepSeek v4 is the best programming combination, especially DeepSeek v4 Flash programming, which is incredibly fast and cheap to code, and I don't have to worry about token consumption.
For slightly more difficult tasks, I switch to the DeepSeek v4 Pro model.
For very complex tasks or tasks that require processing image input, I switch to the Opus 4.6 model.

Exhort

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