[IMP] web: add "unique" array utility function

This commit adds "unique" array utility function which
returns a copy of the given array but without any duplicates.

closes odoo/odoo#76472

Related: odoo/enterprise#20833
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>

addons/web/static/src/core/utils/arrays.js

@@ -154,3 +154,15 @@ export function sections(array) {
     }
     return sections;
 }
+
+/**
+ * Returns an array containing all elements of the given
+ * array but without duplicates.
+ *
+ * @template T
+ * @param {T[]} array
+ * @returns {T[]}
+ */
+export function unique(array) {
+    return Array.from(new Set(array));
+}

addons/web/static/tests/core/utils/arrays_tests.js

@@ -1,6 +1,6 @@
 /** @odoo-module **/
 
-import { cartesian, groupBy, sortBy } from "@web/core/utils/arrays";
+import { cartesian, groupBy, sortBy, unique } from "@web/core/utils/arrays";
 
 QUnit.module("utils", () => {
     QUnit.module("Arrays");
@@ -220,4 +220,9 @@ QUnit.module("utils", () => {
     QUnit.test("cartesian product of four arrays", function (assert) {
         assert.deepEqual(cartesian([1], [2], [3], [4]), [[1, 2, 3, 4]]);
     });
+
+    QUnit.test("unique array", function (assert) {
+        assert.deepEqual(unique([1, 2, 3, 2, 4, 3, 1, 4]), [1, 2, 3, 4]);
+        assert.deepEqual(unique("a d c a b c d b".split(" ")), "a d c b".split(" "));
+    });
 });