</>SkillRecallRECALL WHAT YOU KNOW
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TypeScriptInterfaces & Type Aliases

15 items

1

Narrowing a Discriminated Union

Code Quiz
2

Narrowing a Discriminated Union

Quiz
3

TypeScript Type System Building Blocks

Slides / Video
4

Interfaces, Unions, Generics & Narrowing

Flashcard
5

Type Alias vs Interface Merging

Code Quiz
6

Interface vs Type Alias Capabilities

Quiz
7

Interfaces vs Type Aliases

Slides / Video
8

Interface vs Type Alias

Flashcard
9

TypeScript Type System Essentials

Slides / Video
10

Type System Essentials Overview

Flashcard
11

Callable and Constructable Interfaces

Slides / Video
12

Implementing Interfaces in Classes

Slides / Video
13

Type Aliases Beyond Objects

Slides / Video
14

Interface vs Type Alias

Slides / Video
15

Declaration Merging of Interfaces

Slides / Video
Quiz

Narrowing a Discriminated Union

Learn how a shared literal property lets TypeScript narrow union types inside a switch.

Given `type Shape = { kind: 'circle'; radius: number } | { kind: 'square'; side: number }`, which approach lets TypeScript correctly narrow `shape` so you can safely access `radius` or `side`?