![]() Having this option provides the ability to instantly embrace TypeScript in even larger codebase projects. All you have to do is wrap the object of the component setting in a defineComponent function. The coolest part is that in order to have all this working, you don’t have to remember to include different kinds of interfaces for the component. If you peek at the official Vue 3 documentation, you will notice that there plenty of examples that explain how to use TypeScript in many different scenarios. I will try to reveal all the information I found about TypeScript in Vue 3 in the lines below-so you can feel much more familiar with it and can think of it as an option when starting a new Vue CLI project. Once you set it up, you will be able to use all kind of autocompletions of modules, global components configurations and quick type fixes, and all this will be achieved without the need to even build our project. It also makes it possible to instantly use lots of tools that can increase productivity, like VueDX, Vetur or the amazing Volar for example. This actually means that you test while coding. Its superpower is to save you time by catching errors and providing fixes before you run code. Whether or not you like TypeScript, I’m going to try to convince you that it is one of the greatest new features in Vue 3. In Vue 3, on the other hand, we have the amazing defineComponent method that makes it very easy to move existing projects to TypeScript-so easy that even your cat could do it for you. TypeScript support in Vue 2 was not good enough to use-there were many missing cases and many hacky workarounds. ![]() But, there’s still that one nasty TypeScript error that doesn’t want to go away, and it’s breaking the build no matter what you try! I’ve been there, and if you’ve felt this way too, please accept this hug from me. Imagine the situation: It is the end of a long coding day and all your logic is working perfectly-like a brand-new Ferrari with a V12 engine and only 4 miles on it. ![]() I am sure you have already seen that defineComponent is the key word for TypeScript in Vue 3-but do you know how it works? Let’s take a peek behind the curtain and see where the magic happens!
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