TypeScript handbook (opens in a new tab)
The official reference for the tools used in this lesson.
Link
Declaration files and untyped packages
Sooner or later a dependency ships no types. Writing a small declaration file is faster and safer than sprinkling any across your codebase.
Lesson 4.35m 49sIntermediate9.5k students
Lesson length
5:49What this lesson covers
- Write a minimal declaration for an untyped module
- Augment the types of an existing package
- Declare global types without polluting every file
This lesson sits in TypeScript in Practice, part of TypeScript for Application Developers. It assumes what came before it and leads directly into the next lesson in the module.
In this lesson you will
- Write a minimal declaration for an untyped module
- Augment the types of an existing package
- Declare global types without polluting every file
Resources
Personal notes are coming soon.