Implementing TypeScript in Vue 3 without relying on the Vue CLI

We are currently exploring a pre-existing web project that utilizes Vue.js to enhance the pages generated by an ASP.NET Core project. The client side of the project is already developed in JavaScript 6+ (with modules and so on), and we are considering rewriting it in TypeScript.

Converting the existing JavaScript 6+ codebase to TypeScript should not pose a significant challenge, but I am uncertain about how to incorporate type information when utilizing the options API without relying on Vue components or its CLI.

For example, I am unsure of how to obtain the correct type for a property from the object returned by the data method.

Any guidance would be greatly appreciated. Thank you.

typescriptvue.js

Answer №1

To incorporate TypeScript into the Vue Options API, you must enclose your Options components within defineComponent

export default defineComponent({
  data: () => ({...}),
  props: ['a', 'b'],
  computed: {...},
  // template: '...'
});

However, this approach does not support templates if you are not utilizing tooling to work with .vue files (as templates are treated as strings, while in vue files they are recognized as a separate language)

If transitioning to tooling is an option, explore the newest Vue script setup

(I personally converted .vue from Options to Script Setup using a manually created regex-based converter for half of the task)

You may consider using a component framework like

You can also utilize plugins such as unplugin-auto-import which eliminates the need to import frequently used elements like ref or computed)

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