builtin (fun): add iterators support in basic methods

package.json

@@ -1,6 +1,6 @@
 {
   "name": "tarantoolscript",
-  "version": "0.30.3",
+  "version": "0.30.4",
   "author": "Vitaliy Artemov [email protected]",
   "description": "TypeScript definitions for Tarantool Lua API.",
   "repository": {

src/builtin/fun/Basic.d.ts

@@ -10,6 +10,16 @@ import { FunIterator } from "./FunIterator";
  */
 export declare function iter<T>(value: Array<T>): FunIterator<number, [T]>;
 
+/**
+ * Make iterator from the othe iterator. The function is a generalized version of pairs() and ipairs().
+ * @param value An iterator.
+ * @returns `gen`, `param`, `state` – iterator triplet.
+ * @see {@link https://luafun.github.io/basic.html#fun.iter}
+ */
+export declare function iter<TState, TReturn extends unknown[]>(
+  value: FunIterator<TState, TReturn>
+): FunIterator<TState, TReturn>;
+
 /**
  * Make `gen`, `param`, `state` iterator from the iterable object. The function is a generalized version of pairs() and ipairs().
  * @param value A map to iterate for.
@@ -64,6 +74,19 @@ export declare function each<T>(
   value: Array<T>
 ): void;
 
+/**
+ * Execute the `fun` for each iteration value.
+ * @param value An iterator.
+ * @see {@link https://luafun.github.io/basic.html#fun.each}
+ */
+export declare function each<TState, TReturn extends unknown[]>(
+  fun: (
+    this: void,
+    param: TReturn extends (infer TElement)[] ? TElement : never
+  ) => unknown,
+  value: FunIterator<TState, TReturn>
+): void;
+
 /**
  * Execute the `fun` for each iteration value.
  * @param fun Function to execute on each value.