Delba
@delba_oliveira • 74,440 subscribers
Claude Code • @ClaudeDevs @AnthropicAI | Prev. @Vercel
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React tip: "use client" misconceptions (1/5) 🚫 You need to mark EVERY individual file with "use client" to ensure it is a Client Component. ✅ You only need to mark each client entry point ONCE. Modules imported into a "use client" file are already part of the client bundle. (0:05) Adding "use client" to `3.js` marks the file as a client entry point, including it in the client bundle. (0:11) Importing `d()` into `3.js` (a client entry point) also includes it in the client bundle. (0:14) Adding "use client" to `4.js` has no additional bundling effect on `d()` because it is already part of the client bundle. (0:23) All modules (and their dependencies) imported to `3.js` are included in the client bundle. (0:26) Removing "use client" from `3.js` moves it and its dependencies into the server bundle.
Delba157,319 次观看 • 2 年前
React tip: "use client" misconceptions (2/5) 🚫 "You cannot nest Server Components inside Client Components because "use client" turns everything into Client Components." ✅ We can pass the rendered result of Server Components to Client Components as props. Simple example: (Server Component) (Client Component) (Server Component) is designed for the client. It needs to instantly open and close when clicked. is designed for the server. It uses packages that don't work in the browser and needs to fetch data close to where it's stored without exposing credentials. So, how can we nest a component that uses server APIs inside a component that uses client APIs... without using `import`? React props to the rescue! --- (0:00) 1-4: Reminder: Importing code forms a module dependency graph. Adding dependencies to a server or client bundle. (0:23) 5-6: Reminder: Using components eventually forms a rendered component tree. (0:37) 9: Oh no! We get an error when trying to `import` a client API (useState) into a server module. (0:44) 10: We know the trick by now: Add "use client" to mark `2.js` as a client entry point. This moves the module to the client bundle and allows us to use client APIs like `useState.` (0:51) 11: But we get a new error! "use client" moved all imported dependencies into the client bundle, including our ORM package, which doesn't work in the browser. (0:59) 13: Let's refactor without changing our rendered component hierarchy. First, we move the `Cart` import to the parent file that imports `Modal`. This moves `Cart` outside the "use client" boundary and consequently the client bundle. (1:11) 15: Then, we pass down the rendered result of `Cart` as a prop to `Modal`. This allows `Cart` to be entirely rendered on the server as a Server Component before being passed down. `Modal` has no knowledge of what the `cart` prop is. Its only responsibility is placing whatever it receives into the `{cart}` slot. (1:15) 16: Finally, it's common to use the special `children` prop for a component's primary content. The key insight is that we were able to use props to retain our desired component hierarchy even though we changed our module dependency graph.
Delba43,989 次观看 • 2 年前
Playing around with 'use cache' for a new guide I'm working on. Put together some basic examples at the route, component, and function level. Also gave the playground a glow-up: tweaked the design, added Geist and images, and the gradient borders are finally out, sooo 2022 💁♀️
Delba16,857 次观看 • 1 年前
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