December 2017
Beginner
372 pages
10h 32m
English
Content preview from TypeScript 2.x By Example
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Interfaces
Interface is a TypeScript concept and there is no alternate version in JavaScript; hence, when we write an interface, it does not get transpiled into JavaScript. Interfaces play an important role in TypeScript of providing us with a contract that can be enforced in a class. In TypeScript, interfaces allow us to create our own custom types and provide compile-time checks to make sure the types are used correctly.
An interface is a collection of properties and methods but with no implementation. Its basic purpose is to provide the shape of an object. This means that we can have an interface that defines a couple of properties and a method that accepts one parameter. This interface will not specify how this method is implemented, ...
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