TypeScript Foundations·Practice drills 2

Drill 5: List the steps — Interfaces and type aliases

List the steps the code follows in order.

Intermediate 5 min read Lesson 57 of 300 Challenge included

What you will be able to do

List the steps the code follows in order.

Practice task

List the steps the code follows in order.

models.tsTypeScript

interface Lesson {
  id: string
  title: string
  minutes: number
  published?: boolean
}

interface Course extends Lesson {
  readonly slug: string
  lessons: Lesson[]
}

const html: Course = {
  id: 'html',
  slug: 'html',
  title: 'HTML Foundations',
  minutes: 120,
  lessons: [],
}

Your turn

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Easy

List the steps the code follows in order.

TEXT · starter

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Next: Drill 5: Predict the output — Unions and narrowing

Lesson 57 of 300 · 0% of course