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App.svelte
Button.svelte
Ripple.svelte
<script>
import Button, { ButtonVariant } from "./Button.svelte";
</script>
<style>
ul#_ {
display: flex;
flex-direction: column;
padding: 0;
}
ul#_ > li {
padding: 1em;
text-align: center;
list-style: none;
}
</style>
<ul id="_">
<li>
<Button variant="{ButtonVariant.Contained}">
Hello world
</Button>
</li>
<li>
<Button variant="{ButtonVariant.Outlined}">
Hello world
</Button>
</li>
<li>
<Button variant="{ButtonVariant.Text}">
Hello world
</Button>
</li>
</ul>

Error compiling component

WebAssembly.instantiateStreaming(): value type opcode @+13
/* App.svelte generated by Svelte v3.31.2 */
import {
SvelteComponent,
append,
attr,
create_component,
destroy_component,
detach,
element,
init,
insert,
mount_component,
safe_not_equal,
space,
text,
transition_in,
transition_out
} from "svelte/internal";

import Button, { ButtonVariant } from "./Button.svelte";

function add_css() {
var style = element("style");
style.id = "svelte-1oo50m4-style";
style.textContent = "ul#_.svelte-1oo50m4.svelte-1oo50m4{display:flex;flex-direction:column;padding:0}ul#_.svelte-1oo50m4>li.svelte-1oo50m4{padding:1em;text-align:center;list-style:none}";
append(document.head, style);
}

// (19:2) <Button variant="{ButtonVariant.Contained}">
function create_default_slot_2(ctx) {
let t;

return {
c() {
t = text("Hello world");
},
result = svelte.compile(source, {
generate: ,
});
ul#_.svelte-1oo50m4.svelte-1oo50m4{display:flex;flex-direction:column;padding:0}ul#_.svelte-1oo50m4>li.svelte-1oo50m4{padding:1em;text-align:center;list-style:none}
		
			
				
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                  }
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                  • name: "Button"
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                      • type: "Attribute"
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                  }
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                              }
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                              • name: "Outlined"
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                            • computed: false
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                        ]
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                    ]
                  • children: [...] (1)
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                  }
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      }
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            }
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                • value: Value {...}
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                      }
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              • Declaration {...}
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                • value: Value {...}
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              • Declaration {...}
                • type: "Declaration"
                • important: false
                • property: "padding"
                • value: Value {...}
                  • type: "Value"
                  • children: [...] (1)
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                      }
                    ]
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                  }
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              ]
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            }
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          }
        • Rule {...}
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            • type: "SelectorList"
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              • Selector {...}
                • type: "Selector"
                • children: [...] (4)
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                  • IdSelector {...}
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                  • Combinator {...}
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                    • start: 163
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          • block: Block {...}
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      • context: "default"
      • content: Program {...}
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        • loc: {...}
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    • module: undefined
    }
The AST is not public API and may change at any point in time