Utilizing web components from NPM packages in conjunction with Svelte

My current project involves the development of a simple Single Page App (SPA) using Svelte. I have successfully implemented a basic layout and styling, as well as an asynchronous web request triggered by a button click.

Now, my next objective is to utilize a custom library's Web Component based on lit.js to display the fetched data. However, my lack of understanding when it comes to Web Components and Svelte has led to some errors that I can't quite decipher.

According to the documentation provided for both projects, I should be able to achieve something like this:

<script>
  import 'render-rev';
  let renderRevElement;

  async function loadData() { // called on button click, so dom is loaded
    renderRevElement.configure({
      doi: '10.1101/2020.07.20.212886',
      display: {
        publisherName: name => name.toUpperCase(),
      }
    });    
  }
</script>

<main>

  ...

    <render-rev bind:this="{renderRevElement}" doi="10.1101/2020.07.20.212886"></render-rev>
</main>

Unfortunately, when attempting to access the configure method with the renderRevElement object, I am only seeing one valid key: __svelte_meta. It seems that I may have incorrectly indicated that the <render-rev... component is sourced from the imported module. How can I properly connect these elements?

I have also experimented with other approaches such as

import 'render-rev/render-rev.js'
, invoking configure at the top level of the script, amongst other attempts... What key concept am I missing regarding the consumption of NPM modules within Svelte components?

Answer №1

Upon investigation, I realized that the root cause of the problem lied in my import statement being inaccurate. The specific package that caused the issue was imported using an NPM namespace, a detail that had not been documented. The resolution came when I modified the statement to:

import '@source-data/render-rev/render-rev.js'
.

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