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@EffectTS_ Beginners Complete Getting Started course is out now 🚀
From zero to building complete apps with effect
Type-safe, maintainable, testable apps, and it's just typescript 💯
Here is what you'll learn 👇🧵
Sandro Maglione
4,622 posts
Sandro Maglione
@SandroMaglione
Searching and sharing objective principles on how to get better, while coding Typescript・@EffectTS_・React・Local-First 📈
Helping devs at typeonce.dev 🚀
- Typescript wizardy: `as const` + `satisfies` Combine both to have type safety on Record keys and values + constant inferred types You can then extract both keys and values as unions using `keyof` and `typeof` 🧙
- 💡 Flutter tip 💡 Use Isolate to avoid blocking the UI 👀 Example: loading a 5Mb txt file as a List takes 17 seconds ⏱️ Without Isolate the UI will freeze during this time 🥶 Wrap with Isolate.run to be safe again 🦺
- Using @tailwindcss for styling? Here are some not-obvious strategies to make your styles more composable (using v4) 🧱
- Replying to @DylanoA4"Orwell feared that what we fear will ruin us. Huxley feared that what we desire will ruin us."
- With macros + primary constructors @dart_lang becomes insane 🚀 Example: from a 50+ lines of code to just 1 Stay tuned, because this is going to be game-changing 🤯
- Flutter app in 2024 🚀 🧬 fpdart 🏗️ go_router (with go_router_builder) 🥶 freezed (with json_serializable) 📦 drift (sqlite3) 🔎 get_it ⚡️ signals 🧱 fast_immutable_collections
- Most underrated react hook: useSyncExternalStore Subscribe to external store changes and extract values in sync with react rendering Ideal for things like event listeners 💯
- I implemented a sync engine for the web ⚡️ End to end, from reactive and fast client storage to server sync with web workers, socket, and CRDT Article on how it all works coming soon 🔜
- Important frontend rule: data should be parsed and formatted before reaching the UI Formatting inside a component is problematic 👉 Formatting is computed at every render 👉 Hard to maintain coherent formatting Validate the data at request time
- Unpopular opinion: a react component should contain few to no business logic 👀 A component is only responsible for 1️⃣ Display content based on current state/context 2️⃣ Send events Everything else should be defined outside
- In @nextjs props and search parameters are Promises But you don't need to create a separate client component to read them 💡 The `use` hook extracts Promise values, so pages can be client components 👇
- Building production-ready typescript apps can be challenging 🫣 As your app becomes bigger, speed slows down, and your pain increases 🫠 @EffectTS_ is here to help, this is how 👇🎥
00:00 - `satisfies` makes everything type safe in typescript Combine it with union types and template literals to stop worrying about typos ever again 🥳
