From 57a04c4aa3d8e1e8b74e2b5eea929aee1644c367 Mon Sep 17 00:00:00 2001
From: Mathieu Duckerts-Antoine <dam@odoo.com>
Date: Thu, 6 Apr 2023 10:28:22 +0000
Subject: [PATCH] [IMP] web: utils: zip and zipWith functions

We introduce in utils/arrays.js, the two classical functions zip and zipWith.

Part-of: odoo/odoo#117882
---
 addons/web/static/src/core/utils/arrays.js    | 26 +++++++++++++++++++
 .../static/tests/core/utils/arrays_tests.js   | 18 +++++++++++++
 2 files changed, 44 insertions(+)

diff --git a/addons/web/static/src/core/utils/arrays.js b/addons/web/static/src/core/utils/arrays.js
index 0b449b21476..bd028a45c27 100644
--- a/addons/web/static/src/core/utils/arrays.js
+++ b/addons/web/static/src/core/utils/arrays.js
@@ -203,3 +203,29 @@ export function sections(array) {
 export function unique(array) {
     return Array.from(new Set(array));
 }
+
+/**
+ * @template T1, T2, T
+ * @param {T1[]} array1
+ * @param {T2[]} array2
+ * @returns {T[]}
+ */
+export function zip(array1, array2) {
+    const result = [];
+    const minLength = Math.min(array1.length, array2.length);
+    for (let i = 0; i < minLength; i++) {
+        result.push([array1[i], array2[i]]);
+    }
+    return result;
+}
+
+/**
+ * @template T1, T2, T
+ * @param {T1[]} array1
+ * @param {T2[]} array2
+ * @param {(e1: T1, e2: T2) => T} func
+ * @returns {T[]}
+ */
+export function zipWith(array1, array2, func) {
+    return zip(array1, array2).map(([e1, e2]) => func(e1, e2));
+}
diff --git a/addons/web/static/tests/core/utils/arrays_tests.js b/addons/web/static/tests/core/utils/arrays_tests.js
index 6dd1a278b2e..9626a84af32 100644
--- a/addons/web/static/tests/core/utils/arrays_tests.js
+++ b/addons/web/static/tests/core/utils/arrays_tests.js
@@ -7,6 +7,8 @@ import {
     shallowEqual,
     sortBy,
     unique,
+    zip,
+    zipWith,
 } from "@web/core/utils/arrays";
 
 QUnit.module("utils", () => {
@@ -266,4 +268,20 @@ QUnit.module("utils", () => {
         assert.ok(shallowEqual([fn], [fn]));
         assert.notOk(shallowEqual([() => {}], [() => {}]));
     });
+
+    QUnit.test("zip", function (assert) {
+        assert.deepEqual(zip([1, 2], []), []);
+        assert.deepEqual(zip([1, 2], ["a"]), [[1, "a"]]);
+        assert.deepEqual(zip([1, 2], ["a", "b"]), [
+            [1, "a"],
+            [2, "b"],
+        ]);
+    });
+
+    QUnit.test("zipWith", function (assert) {
+        assert.deepEqual(
+            zipWith([{ a: 1 }, { b: 2 }], ["a", "b"], (o, k) => o[k]),
+            [1, 2]
+        );
+    });
 });