How do you build a web component from a Svelte component?
Svelte allows you to compile components as standard web components (custom elements) that can be used in any HTML environment. This is ideal for sharing components outside of Svelte apps.
You need to set the customElement: true option in your Svelte component to compile it as a web component.
Example: Svelte Component as Custom Element
Once compiled, the Svelte component can be used as a standard HTML tag.
Example: Using the Web Component
Best practices when building Svelte web components:
Use
customElement: truein the Svelte compiler options.Props become HTML attributes; use kebab-case for attribute names.
Scoped styles are automatically applied, but global styles may require extra handling.
Web components are self-contained, but lifecycle events and slots can still be used.
Bundle the component as a module for easy distribution.