February 2019
Beginner
694 pages
18h 4m
English
Content preview from Mastering TypeScript 3 - Third Edition
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Interfaces, Classes, and Inheritance
We have already seen how TypeScript uses basic types, inferred types, function signatures and tuples to bring a strongly typed development experience to JavaScript. This strongly typed paradigm also includes object-oriented features that are similar to other languages, such as interfaces, classes, and inheritance. Where TypeScript has always had language constructs for interfaces and classes, these object-oriented features have only recently been ratified with the ECMAScript six standard. This means that, in order to use these object-oriented features in JavaScript, our target environment must support the ES6 standard. TypeScript, however, will take care of generating ES3 or ES5-compatible JavaScript. ...
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