web trained

Start at the user-visible route: framework loader or server function, data contract, component boundary, browser render, then measured behavior.

mental model

Start at the user-visible route: framework loader or server function, data contract, component boundary, browser render, then measured behavior. Choose the guide by the owning problem, not by a shared React keyword. A bundled source can teach an API; it cannot set another project's aliases, package layout, lint rules, or notification library.

examples

Current TanStack Form validation accepts Standard Schema validators directly:

tanstack form

const form = useForm({
  defaultValues: { email: '' },
  validators: { onChange: z.object({ email: z.email() }) },
  onSubmit: async ({ value }) => save(value),
})

Check the project's installed Zod and Form versions before copying this snippet. In current Next.js App Router pages, dynamic params is a promise:

next.js page

export default async function Page({ params }: { params: Promise<{ slug: string }> }) {
  const { slug } = await params
  return <article>{slug}</article>
}

best practices

Preserve the app's existing ownership and imports; use documented library APIs directly. TanStack Start's current setup uses a Vite or Rsbuild plugin, while Turborepo schedules package scripts through tasks.
Record URL, viewport, device class, build, tool version, and date for a live audit. Separate field p75 Core Web Vitals from one Lighthouse lab run. web.dev
Inspect the actual route, network, and rendered state before tuning memoization, preload, cache, or bundle splitting. Chrome performance tooling

strengths

One route covers component implementation, framework behavior, tooling, and measured quality without treating one vendor's conventions as universal.

weaknesses / pain points

The reference material mixes project-specific examples with dated framework APIs. The guides narrow where it applies; deep examples still require version and contract checks.

gotchas

TanStack Form's Standard Schema support accepts Zod validators directly, with no @tanstack/zod-form-adapter package. TanStack Form validation
Next.js data cache behavior and page props change across versions; do not copy old synchronous params or claim fetch is cached by default. page props, fetch
A Lighthouse score is a lab result; it does not establish field Core Web Vitals or accessibility of every interaction. web.dev, Lighthouse

known bugs

No current version-specific defect is verified for this guru. Add an issue link and a reproduced version only when one is observed.

practiced cases

The web-quality-audit guide's analysis script ran against a real project's index.html with GNU Bash 3.2.57 and jq 1.7.1 and returned valid JSON: success: true, zero issues, zero warnings, and truncated: false. That proves the script runs on one real HTML file; it does not prove that site's rendered accessibility, SEO, or performance.