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Advantages and Disadvantages of TypeScript over JavaScript

Last Updated : 06 Aug, 2021
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What is Typescript ?

TypeScript is a superset of JavaScript, a statically aggregated language to compose straight forward JavaScript code. TypeScript gives discretionary static composing, classes, and interface, and is thought to have better code organizing and object-arranged programming procedures. TypeScript likewise considers better advancement time device uphold and can expand the language past the standard decorators. Besides, it tends to be changed over to plain JavaScript, obviously.  

TypeScript is portrayed as an exacting super-set of JavaScript, which adds discretionary static composing and class-based item arranged programming lined up with ECMAScript 6 standard proposition. It is incorporated down to an informal JavaScript and doesn’t need any sort of runtime library to help it.  

This portrayal typifies two of the main TypeScript plan objectives, which are:  

  • To statically distinguish builds that are probably going to be blunders.
  • To give an organizing component to bigger parts of code.

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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