fix: expose types in package

[namack]

Description

This exposes the typescript declaration files for typescript to reference when used in a project. This is the simplest way to accomplish this since the plugin type files are already included in the package. However, a more involved solution would be to add a build step for the compiled types to be included in the /dist directory.

Before this PR typescript users would run into type errors while importing the package:

After this PR, typescript will automatically infer the types for the exported functions/classes:

Checklist

• Read the contributing guidelines.
• Each commit follows the Conventional Commit spec format.
• Update the readme (if applicable).
• Update or add any necessary API documentation (if applicable)
• All existing unit tests are still passing (if applicable).

[luqven]

Hey @namack, thanks for opening this PR.

I do think adding a build is preferable. It should be pretty straightforward, we can make use of vite-plugin-dts and add { rollupTypes: true }. That should be about it.

// [vite.config.js](https://github.com/imgix/vue/blob/9aebc6f129422ed21a9272f1a7e3fd9b3207794e/vite.config.js#L41)

import dts from 'vite-plugin-dts';
// ...
export default defineConfig({
  // ...
  plugins: [vue(), dts({ rollupTypes: true })],
  // generates imgix-vue.esm.d, imgix-vue.min.d
})

If you're interested in tackling this change yourself, let us know and we can assign an issue to you.

In the meantime, we'll make this change as soon as someone on the team has the bandwidth.

[namack]

@luqven Great! Yes, this is definitely a less hacky solution 😄. I don't mind implementing the change, feel free to assign an issue to me.

[luqven]

Closing in favor of using build step to bundle .d.ts files into /dist