Angular 2 - Basics of TypeScript
The
Angular source code is written in TypeScript. TypeScript is a typed
superset of JavaScript that gets transpiled to plain JavaScript.
Advantages :
Some of the advantages of using TypeScript is
that you can write ES2015 classes and use Modules.
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TypeScript also provides strong typing for
things like variables and function signatures. This helps to aid during
development time to ensure your JavaScript, which is a dynamic
language by nature, is being written and used as intended.
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It is important to note though that using
the strong typing is optional, and it is actually completely
possible to just write plain JavaScript in a TypeScript file.
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Main focus being on writing classes, using
decorators, and a bit of function parameter typing that you need to be
familiar with.
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There are two benefits of going with
TypeScript to write your angular code. The first is
simplicity. By being able to write classes and use decorators you end
up writing less code that reads cleaner and is easier to follow.
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The second is the Angular source code. If
you're writing your code in the same fashion as the angular source
code, it'll be easy for you to look through the source code as you
grow your Angular skills. The ability to reference and learn from the source
code as you work on your angular projects will increase your
productivity as well as your understanding of the framework. Using
the same pattern of writing code, in this case TypeScript, will
provide you an accelerated benefit in that area.