What is type script and its Advantages and Disadvantages?

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What is TypeScript?

TypeScript is a variation of the popular JavaScript programming language that adds some key features that are important for enterprise development. In particular, TypeScript is strongly typed — that is, variables and other data structures can be declared to be of a specific type, like a string or a boolean, by the programmer, and TypeScript will check the validity of their values. This isn’t possible in JavaScript, which is loosely typed.

TypeScript’s strong typing makes possible a number of features that help make developers more efficient, especially when dealing with large, enterprise-scale codebases. TypeScript is compiled, rather than interpreted like JavaScript, which means errors can be caught before execution; IDEs that perform background incremental compilation can spot such errors during the coding process.

Why Learn TypeScript?

JavaScript is a powerful programming language. But as it continues to evolve, outdated code gets messy and difficult to maintain. That’s where TypeScript comes in. It builds on your JavaScript foundation so you can develop higher-quality, less error-prone code faster. As a TypeScript developer, you’ll be in higher demand and gain a competitive edge in the work world.

Advantages of Typescript

  • TypeScript features mistakes at arrangement time while JavaScript, at the runtime.
  • TypeScript gives the advantages of discretionary static composing: TS types can be added to factors, capacities, properties, and so forth.
  • TypeScript underpins specifically or static composing. Static composing can be valuable to help archive capacities, explain utilization, and diminish psychological overhead (interface type clues and getting expected mistakes continuously programming).
  • TypeScript runs in any program or JavaScript motor.
  • Extraordinary tooling with IntelliSense which gives dynamic clues as the code’s additional.
  • TypeScript helps in code organizing.
  • TypeScript has a namespace idea by characterizing a module.
  • TypeScript’s explanations can be discretionary.
  • TypeScript upholds interfaces.
  • TypeScript’s manager modules give a standout amongst other IDE engineer insight.
  • TypeScript has better documentation for APIs which is in a state of harmony with a source code. A few organizations report a decrease in bugs when they change to TypeScript.

Disadvantages of TypeScript 

  • TypeScript sets aside a long effort to incorporate the code.
  • TypeScript doesn’t uphold theoretical classes.
  • When utilizing an outsider library, there should be a definition document, and now and again it’s not generally accessible.
  • Nature of type definition documents is a worry.
  • At whatever point TypeScript needs to run in a program, there should even now be a gathering step to change TypeScript to JavaScript.
  • Enrolling TypeScript engineers may be a genuine annoyance, since a portion of the designers are not keen on learning TypeScript, being entirely alright with utilizing JavaScript. Groups that as of now use JavaScript, become profitable with TypeScript after around 2-3 months, and conversant in TypeScript simply after about a large portion of a year. So instructing staff can likewise be an obstacle.
  • TypeScript isn’t completely coexpressive with JavaScript. Missing highlights include: HOFs, Composition, Generics with Higher key.
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