59 items
Typing React Props Correctly
Code QuizTyping React Props with Interfaces
QuizTyping React Props & State
Slides / VideoTyping React Props & State
FlashcardModule Augmentation Basics
FlashcardJSDoc @typedef Property Syntax
Code QuizMisplaced @ts-ignore Directive
Code QuizModule Augmentation Basics
Slides / VideoType-Checking JS with allowJs and checkJs
Slides / VideoGenerating Declaration Files Automatically
Slides / VideoWriting Declaration Files for Untyped Libraries
Slides / VideoInstalling @types from DefinitelyTyped
Slides / VideoAmbient Modules and Global Declarations
Slides / VideoThe declare Keyword for Ambient Declarations
Slides / VideoWhat Declaration Files Are
Slides / VideoesModuleInterop for JS Interop
Slides / VideotypeRoots and types Configuration
Slides / VideoTypeScript Check Comments Explained
Slides / VideoGradual Migration to TypeScript
Slides / VideoJSDoc Type Annotations in JavaScript
Slides / VideoPurpose of Declaration Files
QuizThe declare Keyword
QuizAmbient Variable and Function Declarations
QuizInstalling @types Packages
QuizDeclaring Untyped Modules
QuizJSDoc Type Annotations
Quiz@ts-check and @ts-nocheck
Quiz@ts-ignore vs @ts-expect-error
QuizAutomatic Type Acquisition
QuizTyping the global Object
Quiz@param and @type Precision
Quizdeclare namespace Usage
QuizGradual JS to TS Migration
QuizJSDoc @param and @returns
Code QuizOverloaded Signatures in .d.ts
Code QuizUMD Global Declaration Syntax
Code QuizImplicit any from JS Import
Code QuizJSDoc @type Annotation
Code QuizTriple-Slash Reference Syntax
Code Quizdeclare namespace Members
Code QuizAmbient const enum
Code QuizAmbient Class Shape
Code QuizAmbient Function Signature
Code QuizValue Inside a .d.ts File
Code QuizInstalling @types Packages
Code QuizAmbient Variable with declare
Code QuizAmbient Global Variables
FlashcardAmbient Functions
FlashcardWildcard Module Declarations
FlashcardJSDoc for Typing JavaScript
Flashcard@ts-ignore vs @ts-expect-error
FlashcardTriple-Slash Directives
FlashcardThe declare Keyword
Flashcard@ts-check and @ts-nocheck
FlashcardGlobal Augmentation with declare global
FlashcardGradual JS to TS Migration
FlashcardHandling Implicit any
FlashcardInstalling @types Packages
FlashcardStructure of an @types Package
FlashcardTyping React Props Correctly
Spot the props typing mistake in a simple typed React component.
interface GreetingProps {
name: string;
age: number;
}
function Greeting({ name, age }: GreetingProps) {
return <p>{name} is {age} years old</p>;
}
function App() {
return <Greeting name="Alice" />;
}What is the bug in this code?