vue-property-decorator VS composition-api

In my last project these two were used a lot: https://github.com/kaorun343/vue-property-decorator and https://class-component.vuejs.org/

Designed for vue 3, do the same work like vue-class-component and vue-property-decorator.

When I was using Vue2 along with vue-class-component and vue-property-decorator it was easy to synchronize v-models between components simply using @ModelSync(). When Vue 3 came out with its Composition API another way was needed to achieve the same result as if Class Component was used.

This is still not better than Vue Class Component & Vue Property Decorator . Very easy syntax, looks like any other OOP language, and looks so much cleaner.

vue-property-decorator: This library works hand in hand with vue-class-component so that you can define properties/methods on your class for things like watchers, properties, etc:

The next thing to tackle for a scalable application is, that we want to have a well written component that is easy to read and to reuse. Vue components are usually single file, which has it's benefits (e.g. if you want to change some css, and then html and oh, you also need to introduce this property in typescript...). It's also easier to maintain some code standard about how large a component should possibly become, if you had single file components (e.g. >250loc => linter error). To additionally increase readability, I like to use typescript class components flavoured with vue property decorators.

Here, we will cover only the basics, the idea is in the future to create an article on Vue-Property-Decorator that complements the usage of this library.

Vue2 não é muito bom pra lidar com typescript de forma vanilla, então o próprio core team e a comunidade criaram soluções pra você ter sintaxes alternativas (nada muito diferente) que suportam os toolings mais modernos e que tiveram maior adoção no decorrer dos últimos anos, como o vue-class-component, vue-property-decorator e o vuex-class. O caso mais notório de ferramenta que tira proveito disso, com certeza é o typescript. Com essas tecnologias, usar typescript é 100% possível, e usando essas sintaxes alternativas, diria até que o código fica mais enxuto e claro do que o vue sem nada (@Action do vuex-class, pra mim, tem uma sintaxe mais agradável que mapActions do vuex cru, por exemplo). Começamos o projeto sem, mas o Brunão começou a implementar usando isso e com uma curva bem pequena de aprendizado, aderimos felizes ao novo método de escrever componentes vue2.

Composition API (now built-in): Composition API is a built-in feature of Vue 3 and is currently available to Vue 2 through the officially maintained @vue/composition-api plugin. In Vue 3, it's mainly used together with the syntax in single-report additives. Here is a basic instance of a issue using Composition API:

√ What would you like to build? » App with Quasar CLI, let's go! √ Project folder: ... quasar-qrcode-scanner √ Pick Quasar version: » Quasar v1 (Vue 2) √ Pick script type: » Typescript √ Package name: ... quasar-qrcode-scanner √ Project product name: (must start with letter if building mobile apps) ... Quasar QR Code Scanner √ Project description: ... A Quasar Project √ Author: ... √ Pick a Vue component style: » Composition API (recommended) (https://github.com/vuejs/composition-api) √ Pick your CSS preprocessor: » Sass with SCSS syntax √ Pick a Quasar components & directives import strategy: (can be changed later) » * Auto-import in-use Quasar components & directives - also treeshakes Quasar; minimum bundle size √ Check the features needed for your project: » ESLint √ Pick an ESLint preset: » Prettier

I'd just found out about this back port of the Composition API to Vue 2 (https://github.com/vuejs/composition-api). What's your experience with that? Is it stable enough to use in a production project with +1000 users? Or is more experimental?

While Vue 3 has had a paradigma change by switching to the Composition API as the primary API, you still can use the "old" Options API which stays mostly unchanged to Vue 2. And vice-versa Vue 2 actually supports most of the Composition API when you include an additional plugin: https://github.com/vuejs/composition-api

Is it even worth it to use https://github.com/vuejs/composition-api or should i migrate to vue 3. I'm only using vue 2 so i can use the vuetify calendar component.

Npm package: @vue/composition-api

If you can’t migrate to Vue 3 today, then you can still use the Composition API already. You can do this by installing the official Composition API Vue 2 Plugin.

I see that the @vue/composition-api also admits to having some performance overhead when used with Vue 2. And it appears to have quite a list of its own gotchas, judging from the README.

For what it's worth most of Vue 3's features can be backported to Vue 2 apps by including the @vue/composition-api package. I agree with the other comment, the v2 docs will get you very far.