change project structure to remove namespaces

src/random/types.ts

@@ -0,0 +1,20 @@
+import { MaybeAsyncFunction } from "../types.js";
+
+export type ElementPredicate<T = any> = (index: number, obj: T) => boolean;
+export type ElementWeight<T = any> = (index: number, obj: T) => number;
+export type RandomGenerator = () => number;
+
+export interface RandomOptions<T = any> {
+  predicate?: ElementPredicate<T>;
+  weight?: ElementWeight<T>;
+  random?: RandomGenerator;
+};
+
+export type MaybeAsyncElementPredicate<T = any> = MaybeAsyncFunction<ElementPredicate<T>>;
+export type MaybeAsyncElementWeight<T = any> = MaybeAsyncFunction<ElementWeight<T>>;
+
+export interface AsyncRandomOptions<T = any> {
+  predicate?: MaybeAsyncElementPredicate<T>;
+  weight?: MaybeAsyncElementWeight<T>;
+  random?: RandomGenerator;
+};