DefsOf

type DefsOf<TCtor extends AnyHandlerCtor> =
    InstanceType<TCtor> extends {
        __componentDefs?: infer Defs extends readonly AnyCustomId[];
    }
        ? Defs
        : never;

type DefsOf<TCtor extends AnyHandlerCtor> =
    InstanceType<TCtor> extends {
        __componentDefs?: infer Defs extends readonly AnyCustomId[];
    }
        ? Defs
        : never;