deren

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title: State management done right with Sveltix. description: Use pinia-like API in Svelte with Sveltix. thumbnail: https://vueschool.io/storage/media/39ebc760d644aa4625743dfc727ff737/pinia-the-enjoyable-vue-store.jpg date: 18/08/2023 | dd-mm-yyyy

The problem

A few months ago, I was building a video player for my project OpenAnime and it became so big that we wanted to split the player into components to improve readability of the player. That time, player included 1300 lines of code in a single component making it very hard to read and maintain. We first tried to use the built-in svelte stores which is great for basic use cases. However, we wanted to also split the Javascript part of the player and storing them in a directory like players, events and utils. And working with svelte stores in plain javascript was just painful we had nearly 30 object properties to manage in a single store and it was clear that built-in svelte stores wasn't enough.

The solution

We needed a library that could work with existing svelte stores to handle reactive changes within the template and we needed another way to use it easily inside our Javascript. So, I created a library called sveltix (yes, the name is inspired from vuex 😏) to do this. Sveltix's API looks too much like Pinia's but currently getter support is not implemented.

Examples with Sveltix

A basic usage

<script>
  import { sveltix } from "sveltix";

  const newStore = sveltix({
    state: () => ({
     value: 1
    })
  });

  const useStore = newStore.useStore();
</script>

<button
  on:click={() => newStore.value++}>count is {$useStore.value}
</button>

Working with actions

<script>
  import { sveltix } from "sveltix";

  const newStore = sveltix({
    state: () => ({
      value: 1,
    }),
    actions: {
      increment() {
        this.value++;
      },
    },
  });

  const useStore = newStore.useStore();
</script>

<button on:click={() => newStore.increment()}>count is {$useStore.value}</button>

Binding components

<script>
  import { sveltix } from "sveltix";

  const newStore = sveltix({
    state: () => ({
     button: null
    })
  });

 //you can't use bind:this={$useStore.button}. Currently this is the only way of binding components 😅
  function binder(node, prop) {
   newStore[prop] = node
  }
</script>

<button use:binder={'button'}>
  hello!
</button>

The end

I hope you enjoyed your stay. The Github repo for this project is here and I appreciate any star you give or your PRs and issues.