November 2019
Beginner
804 pages
20h 1m
English
Content preview from Learn TypeScript 3 by Building Web Applications
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Types for JavaScript libraries
Having auto-completion and type information for third-party libraries that you use is a huge time saver and it can also help you avoid many bugs. Now, you might wonder how TypeScript can provide you with type information for third-party libraries when they are not written themselves in TypeScript. Well, the TypeScript team and the community have got you covered!
TypeScript supports type definitions, also known as typings. Type definitions are sets of declarations that provide additional information to the compiler (somewhat similar to header files in C). You'll discover how this works while working on the projects of this book.
Type definitions are maintained for most major libraries and are maintained either ...
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