@custom-elements-manifest/analyzer/fixtures/02-inheritance/03-mixin-variations/package/my-element.js

<!-- [=> See Source <=](../../docs/analyzer/index.md) -->

import { dedupeMixin } from '@open-wc/dedupe-mixin';
import { BarMixin } from './bar-mixin.js';

export const ArrowFunctionMixin = klass => class extends klass {
  foo;
  static observedAttributes = [...super.observedAttributes, 'my-attribute'];
  method() {
    this.dispatchEvent(new Event('change'))
  }
}

export function FunctionDeclarationMixin(klass) {
  return class extends klass {}
}

export function ReturnValMixin(klass) {
  class Foo extends klass {}
  return Foo;
}

export const ReturnValArrowMixin = klass => { 
  class Bar extends klass {}
  return Bar;
}

// `InternalMixin` is not exported, but `InternalClass` is still expected to have `foo = 1` documented in the CEM
export class InternalClass extends InternalMixin(HTMLElement){}

function InternalMixin(superClass){
    return class extends superClass {
       foo = 1;
    }
}

/**
 * @type {Element}
 * @param {string} klass
 */
const MixinImpl = klass => class extends BarMixin(klass) {}
export const ReexportedWrappedMixin = dedupeMixin(MixinImpl);