letdefine: (
WebAPI.DOMAPI.customElementRegistry,
~name:string,
~constructor:WebAPI.DOMAPI.customElementConstructor,
~options:WebAPI.DOMAPI.elementDefinitionOptions=?,
)=>unit

letgetName: (
WebAPI.DOMAPI.customElementRegistry,
WebAPI.DOMAPI.customElementConstructor,
)=>string

letupgrade: (
WebAPI.DOMAPI.customElementRegistry,
WebAPI.DOMAPI.node,
)=>unit

letwhenDefined: (
WebAPI.DOMAPI.customElementRegistry,
string,
)=>promise<WebAPI.DOMAPI.customElementConstructor>