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Containerization of State within Child React Components The changing of state is the reason why components re-render. If you lift all of your state up 阅读全文
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Sometimes one line of code can eliminate 50% of your bundle size. As you'll see in this video, we can remove "dead code" from modules we are working w 阅读全文
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export type Letter = 'a' | 'b' | 'c' type RemoveC<TType> = TType extends 'c' ? never: TType; type WithoutC = RemoveC<Letter>; 阅读全文
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class SDK { constructor(public loggedInUserId?: string) {} createPost(title: string) { this.assertUserIsLoggedIn(); createPost(this.loggedInUserId, ti 阅读全文
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Config store app/store.ts import { configureStore } from "@reduxjs/toolkit"; export const store = configureStore({ reducer: {} }); main.tsx import Rea 阅读全文
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Let's see when we have following code: interface Animal { name: string; } interface Human { firstName: string; lastName: string; } const getDisplayNam 阅读全文
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For example we have a type like this: type Obj = { a: "a"; a2: "a2"; a3: "a3"; b: "b"; b1: "b1"; b2: "b2"; }; We want to constrct a new type which por 阅读全文
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For example we have two types, we want to find the shared props in both: interface UserBase { email: string image: string | null username: string } in 阅读全文
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Let's say we have a function accept any type but array. function anyTypesButNotArray<T>( val: T extends any[] ? "you should not pass in array" : T ) { 阅读全文
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Constructs a type consisting of the return type of function Type. https://www.typescriptlang.org/docs/handbook/utility-types.html import { configureSt 阅读全文