TypeScript and JavaScript
Their differences are listed.
Early Error Detection
TypeScript doesn’t take away JavaScript’s dynamic capabilities, it just allows developers to make effective use of the static typing approach. Static typing sends out the error signals early. It helps developers in discovering which objects work and don’t work. Tooling enables developers to spot their errors and correct them a good deal before the application is run, a total contrast to JavaScript’s real-time trail and error approach. When you get down to pure coding, the clear-cut differences of both programs emerge. A glaring error in JavaScript will never be singled out for correction until run time. In TypeScript, the resultant output in JavaScript (with the types removed) can be derived using the latest available tools and features.
The ECMAScript Factor
TypeScript edges ahead in its ability on allowing developers use a major part of the latest version of ECMAScript (ECMAScript6, at the time of writing) features (lambda functions, modules, classes, etc). The language thus makes up for the resource gap developers always had.
‘Safer’ Refactoring
Refactoring in TypeScript is ‘safer’, as we are armed with a semantic knowledge of the code. This was not possible in JavaScript. In fact, more the lines of code you write in JavaScript, the more fragile it becomes.
Faster
So your JavaScript framework wasn’t written in TypeScript? You can simply write down the Type definitions for it. The integrated development environment (IDE) then validates it for you. Making changes in the browser and reloading is also faster in TypeScript, with a set of tools.
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