SvelteJS: utilizing static properties within components

I have a situation where I need to pass information to a component class so that other instances can utilize that data downstream.

For example:

import { AComponent } from 'AComponent.svelte'
...
AComponent.classInfo = {something: somedata}

Then, the component could retrieve that information like this:

<script>
  let something = AComponent.classInfo.something
</script>

In V2, there was discussion about implementing this feature (I'm currently using V3) in these issues: Support Component Static Method #480, which led to Added setup function which can supply static methods/properties. #572.

However, after reviewing the current documentation, it seems that there is no such setup method. So, I'm wondering if this feature carried over from V2 to V3 and if not, if there's another way to achieve this functionality?

javascriptstatic-methodssvelte-3

Answer №1

In the module script block, you have the ability to define static properties that are not specific to any particular instance.

<script context="module">
  export const someValue = 123
</script>
<script>
  // Normal component functionality goes here
</script>

You can then easily import this property directly from the component file:

import { someValue } from './MyComponent.svelte'

Keep in mind that this value will be shared among all instances of this component.

Answer №2

In the latest version of v3.32, there is a limitation on defining static properties in a Svelte Component. Only named exports can be utilized.

The sole solution that I am aware of involves employing a custom webpack loader/rollup plugin, and the process is often far from elegant.

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