What is Typescript? How can a Typescript developer help me?


Need to hire typescript developer? Well, first, let’s look at what TypeScript is. TypeScript has been rising in popularity for the past few years. It was mentioned among the five most promising languages for the year 2020. Among the biggest frontend frameworks, Angular, is utilizing TypeScript. Around 60% of JavaScript programmers already use it, and 22 % want to try. And why is that?

For the client-side, JavaScript was presented as a language. The creation of Node.js made JavaScript a rising server-side technology. But when we are building the feature-rich app, we produce more and more code, as a result the source of the application becomes messier. At the end such a code is hard to reuse and maintain.


Additionally, its failure to adopt the OOP features, strong type checking, as well as compile-time error checks keeps JavaScript from succeeding at the enterprise level as a server-side, mature technology. To bridge this gap, TypeScript was introduced.

 TypeScript: What is it?

 TypeScript, by definition, is JavaScript for application-scale development. It is an object-oriented, strongly typed, compiled language. Anders Hejlsberg, the designer of C#, together with Microsoft developed TypeScript to overcome the issues developers faced using JavaScript. It is both a set of tools, as well as a language.

It is a typed JavaScript superset that is compiled to JavaScript. TypeScript, in other words, is JavaScript in addition to some extra features.

 TypeScript Features

  • TypeScript is merely JavaScript. It begins with JavaScript and winds up with JavaScript. It will adapt your program’s fundamental building blocks from JavaScript. So, you must know JavaScript to utilize TypeScript. Every bit of TypeScript code gets converted to its JavaScript equivalent for execution purposes.
  • TypeScript supports additional JavaScript libraries. Compiled TypeScript may be consumed from all JavaScript code. TypeScript-produced JavaScript may reuse all the current JavaScript libraries, tools, as well as frameworks.
  • JS is TypeScript. That means any valid .js file may be renamed to .ts then compiled with additional TypeScript files.
  • TypeScript is portable. It is portable across devices, browsers, as well as operating systems. TypeScript may work on any environment JavaScript runs on. TypeScript, unlike its counterparts, does not require a specific runtime environment or dedicated VM to execute.

ECMAScript and TypeScript

If you are developing using Typescript you need to learn what the ECMAScript specification is.  It is a standardized specification of a scripting language. There are 6 ECMA-262 editions available. Version 6 of this standard has the codename “Harmony”. It is affiliated with the ECMAScript6 specification.

It embraces its fundamental language features from the ECMAScript5 specification, the official specification for JavaScript. TypeScript’s language features such as class-based orientation and Modules are in line with the EcmaScript 6 specification. Also, TypeScript embraces type annotations and generics that are not part of the EcmaScript6 specification.

 Why to use TypeScript?

It is superior to its other counterparts such as Dart and Coffee Script programming languages in a way that it has extended JavaScript. In contrast, languages such as Coffee Script, as well as Dart are new languages themselves and need language-specific execution environments.

What are the Benefits of TypeScript?

 It supports Object-Oriented Programming ideas such as inheritance, interfaces, classes, and so on.

It supports type definitions for current JavaScript libraries. TypeScript Definition file (along with a.d.ts extension) explains exterior JavaScript libraries. So, the TypeScript code may contain those libraries.

 Strong Static Typing − JavaScript is not strongly typed. TypeScript comes with an optional type of inference system and static typing through the TypeScript Language Service (TLS). The type of variable declared without a class might be inferred by the TypeScript Language Service based upon its value.

Compilation − JS is an interpreted language. So, it must be run to test that it’s valid. That means you will write all of the codes only to discover no output, in case there’s an error. Therefore, you must spend hours attempting to locate bugs in the code.

TypeScript’s transpiler offers an error-checking feature. It’ll compile the code then produce compilation errors if it locates some syntax errors. It helps to emphasize the mistakes before the script gets run.[adsense]

TypeScript Components

TypeScript, at its heart, has these three components –

TypeScript Language Service − This “Language Service” exposes an extra layer surrounding the core compiler pipeline, including editor-like applications. This language service supports the standard set of typical editor operations such as signature help, statement completions, colorization, code outlining and formatting, and so on.

TypeScript Compiler − The tsc (Typescript compiler) converts all instructions written in TypeScript to the JavaScript equivalent.

Language – It will comprise of the type annotations, keywords, as well as syntax.