feat: more mixins

src/base/index.ts

@@ -1,18 +1,21 @@
 import type { DefaultRegistry, Methods, Registry } from "../registry";
+import type { shim } from "./mixin";
 
-export interface Base<T> {
-	readonly value: T;
-}
+export type Base<T> = T extends { [shim]: { value: infer U } }
+	? { readonly value: U }
+	: {
+			readonly value: T;
+		};
 
 export type Fluent<
 	T,
 	Reg extends Registry = DefaultRegistry,
-> = Base<T> & Methods<T, Reg> & { readonly __registry: Reg };
+> = Base<T> & Methods<T, Reg>;
 
 export function makeFluent<const Reg extends Registry>(
 	registry: Reg,
 ) {
-	const fluent = <T>(value: T) => {
+	const fluent = <const T>(value: T) => {
 		// eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
 		const f = { value } as never as Fluent<T, Reg>;