Function define

define(
    elementName?: string,
    options?: DefineOptions,
): <T extends new (...args: any[]) => HTMLElement>(
    Base: T,
    context: ClassDecoratorContext<T>,
) => T
Parameters
- OptionalelementName: string
  The name of the custom HTML element. It is inferred if omitted.
- Optionaloptions: DefineOptions = ...
  Custom DefineOptions options object.
Returns <T extends new (...args: any[]) => HTMLElement>(
Base: T,
context: ClassDecoratorContext<T>,
) => T
Description
Stage-3 class decorator factory. It:
- Registers the element with customElements (name inferred if omitted).
- Adds the defined (or inferred) customElement name as a class to all instances of this class (and the class's children).
- Publishes a live observedAttributes getter that lists all attributes associated with @observed fields in this class and its ancestors.
- Sets up an attributeChangedCallback() function to mirror changes from attributes to their associated @observed fields.
Example
```
@define() // name will be "my-el" (kebab case of class name).
class MyEl extends HTMLElement { ... }

@define("my-el") // explicit name
class MyEl extends HTMLElement { ... }
```
- Defined in src/decorators/define/define.ts:31