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The manifest appears correct. The custom element definition and declaration (the class) are in separate modules and we don't seem to resolve the reference to the declaration correctly.
We see the custom element export in the lion-button-submit.js module:
Try
@lion/button/lion-button-submit
in a local dev environment: http://localhost:5450/catalog/element/@lion/button/lion-button-submitThis page errors because no declaration is found.
There are at least three problems here:
We see the custom element export in the
lion-button-submit.js
module:The module has no declarations because it just imports and registers an element:
The declaration is in the
src/LionButtonSubmit.js
file: