diff --git a/addons/mail/static/tests/mail_utils_tests.js b/addons/mail/static/tests/mail_utils_tests.js
index 42e1437ee3a..059abd627ea 100644
--- a/addons/mail/static/tests/mail_utils_tests.js
+++ b/addons/mail/static/tests/mail_utils_tests.js
@@ -18,7 +18,7 @@ QUnit.test("add_link utility function", function (assert) {
         "https://tenor.com/view/chỗgiặt-dog-smile-gif-13860250": true,
         "http://www.boîtenoire.be": true,
     };
-    _.each(testInputs, function (willLinkify, content) {
+    for (const [content, willLinkify] of Object.entries(testInputs)) {
         const output = utils.parseAndTransform(content, utils.addLink);
         if (willLinkify) {
             assert.strictEqual(output.indexOf("<a "), 0);
@@ -26,7 +26,7 @@ QUnit.test("add_link utility function", function (assert) {
         } else {
             assert.strictEqual(output.indexOf("<a "), -1);
         }
-    });
+    }
 });
 
 QUnit.test("addLink: utility function and special entities", function (assert) {
@@ -51,10 +51,11 @@ QUnit.test("addLink: utility function and special entities", function (assert) {
         // special character in smileys should be escaped
         "&lt;3": "&lt;3",
     };
-    _.each(testInputs, function (result, content) {
+
+    for (const [content, result] of Object.entries(testInputs)) {
         const output = utils.parseAndTransform(content, utils.addLink);
         assert.strictEqual(output, result);
-    });
+    }
 });
 
 QUnit.test("addLink: linkify inside text node (1 occurrence)", function (assert) {
diff --git a/addons/mass_mailing/static/src/js/mass_mailing_html_field.js b/addons/mass_mailing/static/src/js/mass_mailing_html_field.js
index 06638add5e9..82ecf1ae381 100644
--- a/addons/mass_mailing/static/src/js/mass_mailing_html_field.js
+++ b/addons/mass_mailing/static/src/js/mass_mailing_html_field.js
@@ -485,7 +485,7 @@ export class MassMailingHtmlField extends HtmlField {
         const $layout = this.wysiwyg.$iframeBody.find(".o_layout");
         let selectedTheme = false;
         if ($layout.length !== 0) {
-            _.each(themesParams, function (themeParams) {
+            themesParams.forEach((themeParams) => {
                 if ($layout.hasClass(themeParams.className)) {
                     selectedTheme = themeParams;
                 }
diff --git a/addons/point_of_sale/static/src/js/models.js b/addons/point_of_sale/static/src/js/models.js
index 4dadd4ae251..1bd84a9026d 100644
--- a/addons/point_of_sale/static/src/js/models.js
+++ b/addons/point_of_sale/static/src/js/models.js
@@ -1024,7 +1024,7 @@ export class PosGlobalState extends PosModel {
         return orm
             .call("pos.order", "create_from_ui", [orders, options.draft || false])
             .then(function (server_ids) {
-                _.each(order_ids_to_sync, function (order_id) {
+                order_ids_to_sync.forEach((order_id) => {
                     self.db.remove_order(order_id);
                 });
                 self.failed = false;
@@ -3160,7 +3160,7 @@ export class Order extends PosModel {
         this.pricelist = pricelist;
 
         var lines_to_recompute = this.get_orderlines().filter((line) => !line.price_manually_set);
-        _.each(lines_to_recompute, function (line) {
+        lines_to_recompute.forEach((line) => {
             line.set_unit_price(
                 line.product.get_price(self.pricelist, line.get_quantity(), line.get_price_extra())
             );
diff --git a/addons/portal/static/src/js/portal_chatter.js b/addons/portal/static/src/js/portal_chatter.js
index 2d20150a626..8c92bf8830b 100644
--- a/addons/portal/static/src/js/portal_chatter.js
+++ b/addons/portal/static/src/js/portal_chatter.js
@@ -102,7 +102,7 @@ var PortalChatter = publicWidget.Widget.extend({
      * @returns {Array}
      */
     preprocessMessages(messages) {
-        _.each(messages, function (m) {
+        messages.forEach((m) => {
             m['author_avatar_url'] = sprintf('/web/image/%s/%s/author_avatar/50x50', 'mail.message', m.id);
             m['published_date_str'] = sprintf(_t('Published on %s'), moment(time.str_to_datetime(m.date)).format('MMMM Do YYYY, h:mm:ss a'));
             m['body'] = Markup(m.body);
diff --git a/addons/portal/static/src/js/portal_composer.js b/addons/portal/static/src/js/portal_composer.js
index 6e91d5e2084..70276392bb5 100644
--- a/addons/portal/static/src/js/portal_composer.js
+++ b/addons/portal/static/src/js/portal_composer.js
@@ -52,7 +52,7 @@ var PortalComposer = publicWidget.Widget.extend({
         return this._super.apply(this, arguments).then(function () {
             if (self.options.default_attachment_ids) {
                 self.attachments = self.options.default_attachment_ids || [];
-                _.each(self.attachments, function(attachment) {
+                self.attachments.forEach((attachment) => {
                     attachment.state = 'done';
                 });
                 self._updateAttachments();
diff --git a/addons/portal/static/src/js/portal_sidebar.js b/addons/portal/static/src/js/portal_sidebar.js
index f9f90ad7669..72f0d0fad4e 100644
--- a/addons/portal/static/src/js/portal_sidebar.js
+++ b/addons/portal/static/src/js/portal_sidebar.js
@@ -28,8 +28,8 @@ var PortalSidebar = publicWidget.Widget.extend({
      * @private
      */
     _setDelayLabel: function () {
-        var $sidebarTimeago = this.$el.find('.o_portal_sidebar_timeago');
-        _.each($sidebarTimeago, function (el) {
+        var $sidebarTimeago = this.$el.find('.o_portal_sidebar_timeago').toArray();
+        $sidebarTimeago.forEach((el) => {
             var dateTime = moment(time.auto_str_to_date($(el).attr('datetime'))),
                 today = moment().startOf('day'),
                 diff = dateTime.diff(today, 'days', true),
diff --git a/addons/portal_rating/static/src/js/portal_chatter.js b/addons/portal_rating/static/src/js/portal_chatter.js
index e2fb17b535c..801d0b0b1fa 100644
--- a/addons/portal_rating/static/src/js/portal_chatter.js
+++ b/addons/portal_rating/static/src/js/portal_chatter.js
@@ -65,7 +65,7 @@ PortalChatter.include({
         var self = this;
         messages = this._super.apply(this, arguments);
         if (this.options['display_rating']) {
-            _.each(messages, function (m, i) {
+            messages.forEach((m, i) => {
                 m.rating_value = self.roundToHalf(m['rating_value']);
                 m.rating = self._preprocessCommentData(m.rating, i);
             });
@@ -136,12 +136,14 @@ PortalChatter.include({
             'avg': Math.round(result['rating_stats']['avg'] * 100) / 100,
             'percent': [],
         };
-        _.each(_.sortBy(Object.keys(result['rating_stats']['percent'])).reverse(), function (rating) {
-            ratingData['percent'].push({
-                'num': self.roundToHalf(rating),
-                'percent': utils.round_precision(result['rating_stats']['percent'][rating], 0.01),
+        _.sortBy(Object.keys(result["rating_stats"]["percent"]))
+            .reverse()
+            .forEach((rating) => {
+                ratingData["percent"].push({
+                    num: self.roundToHalf(rating),
+                    percent: utils.round_precision(result["rating_stats"]["percent"][rating], 0.01),
+                });
             });
-        });
         this.set('rating_card_values', ratingData);
     },
     /**
diff --git a/addons/purchase/static/src/js/purchase_portal_sidebar.js b/addons/purchase/static/src/js/purchase_portal_sidebar.js
index e924b5679f6..03f15ab5eeb 100644
--- a/addons/purchase/static/src/js/purchase_portal_sidebar.js
+++ b/addons/purchase/static/src/js/purchase_portal_sidebar.js
@@ -59,35 +59,19 @@ publicWidget.registry.PurchasePortalSidebar = PortalSidebar.extend({
             "id",
             ""
         );
-        _.each(this.spyWatched.find("#quote_content h2, #quote_content h3"), function (el) {
-            var id, text;
-            switch (el.tagName.toLowerCase()) {
-                case "h2":
-                    id = self._setElementId("quote_header_", el);
-                    text = self._extractText($(el));
-                    if (!text) {
-                        break;
-                    }
-                    lastLI = $("<li class='nav-item'>")
-                        .append(
-                            $(
-                                '<a class="nav-link" style="max-width: 200px;" href="#' + id + '"/>'
-                            ).text(text)
-                        )
-                        .appendTo($bsSidenav);
-                    lastUL = false;
-                    break;
-                case "h3":
-                    id = self._setElementId("quote_", el);
-                    text = self._extractText($(el));
-                    if (!text) {
-                        break;
-                    }
-                    if (lastLI) {
-                        if (!lastUL) {
-                            lastUL = $("<ul class='nav flex-column'>").appendTo(lastLI);
+        this.spyWatched
+            .find("#quote_content h2, #quote_content h3")
+            .toArray()
+            .forEach((el) => {
+                var id, text;
+                switch (el.tagName.toLowerCase()) {
+                    case "h2":
+                        id = self._setElementId("quote_header_", el);
+                        text = self._extractText($(el));
+                        if (!text) {
+                            break;
                         }
-                        $("<li class='nav-item'>")
+                        lastLI = $("<li class='nav-item'>")
                             .append(
                                 $(
                                     '<a class="nav-link" style="max-width: 200px;" href="#' +
@@ -95,12 +79,33 @@ publicWidget.registry.PurchasePortalSidebar = PortalSidebar.extend({
                                         '"/>'
                                 ).text(text)
                             )
-                            .appendTo(lastUL);
-                    }
-                    break;
-            }
-            el.setAttribute("data-anchor", true);
-        });
+                            .appendTo($bsSidenav);
+                        lastUL = false;
+                        break;
+                    case "h3":
+                        id = self._setElementId("quote_", el);
+                        text = self._extractText($(el));
+                        if (!text) {
+                            break;
+                        }
+                        if (lastLI) {
+                            if (!lastUL) {
+                                lastUL = $("<ul class='nav flex-column'>").appendTo(lastLI);
+                            }
+                            $("<li class='nav-item'>")
+                                .append(
+                                    $(
+                                        '<a class="nav-link" style="max-width: 200px;" href="#' +
+                                            id +
+                                            '"/>'
+                                    ).text(text)
+                                )
+                                .appendTo(lastUL);
+                        }
+                        break;
+                }
+                el.setAttribute("data-anchor", true);
+            });
         this.trigger_up("widgets_start_request", { $target: $bsSidenav });
     },
     /**
@@ -113,19 +118,22 @@ publicWidget.registry.PurchasePortalSidebar = PortalSidebar.extend({
     _extractText: function ($node) {
         var self = this;
         var rawText = [];
-        _.each($node.contents(), function (el) {
-            var current = $(el);
-            if ($.trim(current.text())) {
-                var tagName = current.prop("tagName");
-                if (
-                    _.isUndefined(tagName) ||
-                    (!_.isUndefined(tagName) &&
-                        _.contains(self.authorizedTextTag, tagName.toLowerCase()))
-                ) {
-                    rawText.push($.trim(current.text()));
+        $node
+            .contents()
+            .toArray()
+            .forEach((el) => {
+                var current = $(el);
+                if ($.trim(current.text())) {
+                    var tagName = current.prop("tagName");
+                    if (
+                        _.isUndefined(tagName) ||
+                        (!_.isUndefined(tagName) &&
+                            _.contains(self.authorizedTextTag, tagName.toLowerCase()))
+                    ) {
+                        rawText.push($.trim(current.text()));
+                    }
                 }
-            }
-        });
+            });
         return rawText.join(" ");
     },
 });
diff --git a/addons/sale/static/src/js/sale_portal_sidebar.js b/addons/sale/static/src/js/sale_portal_sidebar.js
index efd8ff1980e..8a55538f71b 100644
--- a/addons/sale/static/src/js/sale_portal_sidebar.js
+++ b/addons/sale/static/src/js/sale_portal_sidebar.js
@@ -61,7 +61,7 @@ publicWidget.registry.SalePortalSidebar = PortalSidebar.extend({
             $bsSidenav = this.$el.find('.bs-sidenav');
 
         $("#quote_content [id^=quote_header_], #quote_content [id^=quote_]", this.spyWatched).attr("id", "");
-        _.each(this.spyWatched.find("#quote_content h2, #quote_content h3"), function (el) {
+        this.spyWatched.find("#quote_content h2, #quote_content h3").toArray().forEach((el) => {
             var id, text;
             switch (el.tagName.toLowerCase()) {
                 case "h2":
@@ -101,7 +101,7 @@ publicWidget.registry.SalePortalSidebar = PortalSidebar.extend({
     _extractText: function ($node) {
         var self = this;
         var rawText = [];
-        _.each($node.contents(), function (el) {
+        $node.contents().toArray().forEach((el) => {
             var current = $(el);
             if ($.trim(current.text())) {
                 var tagName = current.prop("tagName");
diff --git a/addons/sale/static/src/js/variant_mixin.js b/addons/sale/static/src/js/variant_mixin.js
index c9e9249441a..8e481e7bee5 100644
--- a/addons/sale/static/src/js/variant_mixin.js
+++ b/addons/sale/static/src/js/variant_mixin.js
@@ -295,7 +295,7 @@ var VariantMixin = {
             'input.js_variant_change:checked',
             'select.js_variant_change'
         ];
-        _.each($container.find(variantsValuesSelectors.join(', ')), function (el) {
+        $container.find(variantsValuesSelectors.join(', ')).toArray().forEach((el) => {
             values.push(+$(el).val());
         });
 
@@ -383,10 +383,10 @@ var VariantMixin = {
         // for each of them, contains array with the other ptav they exclude
         if (combinationData.exclusions) {
             // browse all the currently selected attributes
-            _.each(combination, function (current_ptav) {
+            Object.values(combination).forEach((current_ptav) => {
                 if (combinationData.exclusions.hasOwnProperty(current_ptav)) {
                     // for each exclusion of the current attribute:
-                    _.each(combinationData.exclusions[current_ptav], function (excluded_ptav) {
+                    Object.values(combinationData.exclusions[current_ptav]).forEach((excluded_ptav) => {
                         // disable the excluded input (even when not already selected)
                         // to give a visual feedback before click
                         self._disableInput(
@@ -439,10 +439,11 @@ var VariantMixin = {
         }
 
         // parent exclusions (tell which attributes are excluded from parent)
-        _.each(combinationData.parent_exclusions, function (exclusions, excluded_by){
+        for (const [excluded_by, exclusions] of Object.entries(
+            combinationData.parent_exclusions || {}
+        )) {
             // check that the selected combination is in the parent exclusions
-            _.each(exclusions, function (ptav) {
-
+            exclusions.forEach((ptav) => {
                 // disable the excluded input (even when not already selected)
                 // to give a visual feedback before click
                 self._disableInput(
@@ -453,7 +454,7 @@ var VariantMixin = {
                     combinationData.parent_product_name
                 );
             });
-        });
+        }
     },
     /**
      * Extracted to a method to be extendable by other modules
diff --git a/addons/sale_product_configurator/static/src/js/product_configurator_modal.js b/addons/sale_product_configurator/static/src/js/product_configurator_modal.js
index b5b9c83b7f8..e03b42fcc42 100644
--- a/addons/sale_product_configurator/static/src/js/product_configurator_modal.js
+++ b/addons/sale_product_configurator/static/src/js/product_configurator_modal.js
@@ -146,8 +146,8 @@ export const OptionalProductsModal = Dialog.extend(ServicesMixin, VariantMixin,
         this.$el.find('input[name="add_qty"]').val(this.rootProduct.quantity);
 
         // set a unique id to each row for options hierarchy
-        var $products = this.$el.find('tr.js_product');
-        _.each($products, function (el) {
+        var $products = this.$el.find('tr.js_product').toArray();
+        $products.forEach((el) => {
             var $el = $(el);
             var uniqueId = self._getUniqueId(el);
 
diff --git a/addons/sale_product_configurator/static/src/js/sale_product_field.js b/addons/sale_product_configurator/static/src/js/sale_product_field.js
index 40df7236074..1408efc59ae 100644
--- a/addons/sale_product_configurator/static/src/js/sale_product_field.js
+++ b/addons/sale_product_configurator/static/src/js/sale_product_field.js
@@ -188,7 +188,7 @@ patch(SaleOrderLineProductField.prototype, 'sale_product_configurator', {
         var customAttributeValues = mainProduct.product_custom_attribute_values;
         var customValuesCommands = [{ operation: "DELETE_ALL" }];
         if (customAttributeValues && customAttributeValues.length !== 0) {
-            _.each(customAttributeValues, function (customValue) {
+            customAttributeValues.forEach((customValue) => {
                 customValuesCommands.push({
                     operation: "CREATE",
                     context: [
diff --git a/addons/web/static/src/legacy/frontend/keyboard_navigation_mixin.js b/addons/web/static/src/legacy/frontend/keyboard_navigation_mixin.js
index 12b1ae0fa12..4a23f0f079d 100644
--- a/addons/web/static/src/legacy/frontend/keyboard_navigation_mixin.js
+++ b/addons/web/static/src/legacy/frontend/keyboard_navigation_mixin.js
@@ -75,8 +75,8 @@ import BrowserDetection from "web.BrowserDetection";
             if (this.options.skipRenderOverlay) {
                 return;
             }
-            var accesskeyElements = $(document).find('[accesskey]').filter(':visible');
-            _.each(accesskeyElements, function (elem) {
+            var accesskeyElements = $(document).find('[accesskey]').filter(':visible').toArray();
+            accesskeyElements.forEach((elem) => {
                 var overlay = $(`<div class='o_web_accesskey_overlay font-sans-serif'>${$(elem).attr('accesskey').toUpperCase()}</div>`);
 
                 var $overlayParent;
@@ -167,7 +167,7 @@ import BrowserDetection from "web.BrowserDetection";
                         .not('[accesskey]')
                         .not('[disabled]')
                         .not('[tabindex="-1"]');
-                    _.each(buttonsWithoutAccessKey, function (elem) {
+                    buttonsWithoutAccessKey.toArray().forEach((elem) => {
                         var buttonString = [elem.innerText, elem.title, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"].join('');
                         for (var letterIndex = 0; letterIndex < buttonString.length; letterIndex++) {
                             var candidateAccessKey = buttonString[letterIndex].toUpperCase();
@@ -182,7 +182,7 @@ import BrowserDetection from "web.BrowserDetection";
                 }
 
                 var elementsWithoutAriaKeyshortcut = this.$el.find('[accesskey]').not('[aria-keyshortcuts]');
-                _.each(elementsWithoutAriaKeyshortcut, function (elem) {
+                elementsWithoutAriaKeyshortcut.toArray().forEach((elem) => {
                     elem.setAttribute('aria-keyshortcuts', 'Alt+Shift+' + elem.accessKey);
                 });
                 this._addAccessKeyOverlays();
diff --git a/addons/web/static/src/legacy/js/core/ajax.js b/addons/web/static/src/legacy/js/core/ajax.js
index 99b77843859..41fab569142 100644
--- a/addons/web/static/src/legacy/js/core/ajax.js
+++ b/addons/web/static/src/legacy/js/core/ajax.js
@@ -164,9 +164,9 @@ function get_file(options) {
     } else {
         xhr.open('POST', options.url);
         data = new FormData();
-        _.each(options.data || {}, function (v, k) {
+        for (const [k, v] of Object.entries(options.data || {})) {
             data.append(k, v);
-        });
+        }
     }
     if (core.csrf_token) {
         data.append('csrf_token', core.csrf_token);
diff --git a/addons/web/static/src/legacy/js/core/class.js b/addons/web/static/src/legacy/js/core/class.js
index 6ced296cdd5..d8e716aa28f 100644
--- a/addons/web/static/src/legacy/js/core/class.js
+++ b/addons/web/static/src/legacy/js/core/class.js
@@ -73,7 +73,7 @@ OdooClass.extend = function() {
     initializing = false;
 
     // Copy the properties over onto the new prototype
-    _.each(prop, function(val, name) {
+    Object.keys(prop).forEach((name) => {
         // Check if we're overwriting an existing function
         prototype[name] = typeof prop[name] == "function" &&
                           fnTest.test(prop[name]) ?
@@ -110,7 +110,7 @@ OdooClass.extend = function() {
         return this;
     }
     Class.include = function (properties) {
-        _.each(properties, function(val, name) {
+        Object.keys(properties).forEach((name) => {
             if (typeof properties[name] !== 'function'
                     || !fnTest.test(properties[name])) {
                 prototype[name] = properties[name];
diff --git a/addons/web/static/src/legacy/js/core/context.js b/addons/web/static/src/legacy/js/core/context.js
index 756f88fbd7a..03c2d024d99 100644
--- a/addons/web/static/src/legacy/js/core/context.js
+++ b/addons/web/static/src/legacy/js/core/context.js
@@ -9,9 +9,7 @@ var Context = Class.extend({
         this.__contexts = [];
         this.__eval_context = null;
         var self = this;
-        _.each(arguments, function (x) {
-            self.add(x);
-        });
+        Object.values(arguments).forEach((x) => self.add(x));
     },
 
     //--------------------------------------------------------------------------
diff --git a/addons/web/static/src/legacy/js/core/domain.js b/addons/web/static/src/legacy/js/core/domain.js
index 4de962c4a54..504144fb2cd 100644
--- a/addons/web/static/src/legacy/js/core/domain.js
+++ b/addons/web/static/src/legacy/js/core/domain.js
@@ -220,7 +220,7 @@ var Domain = collections.Tree.extend({
             this._children.push(subdomain);
         } else {
             var self = this;
-            _.each(subdomain._children, function (childDomain) {
+            subdomain._children.forEach((childDomain) => {
                 self._children.push(childDomain);
             });
         }
@@ -330,7 +330,7 @@ var Domain = collections.Tree.extend({
         }
 
         var stack = [];
-        _.each(domain, function (dom) {
+        domain.forEach((dom) => {
             if (dom === '|' || dom === '&') {
                 stack.push(dom);
             } else {
diff --git a/addons/web/static/src/legacy/js/core/misc.js b/addons/web/static/src/legacy/js/core/misc.js
index 4fc11729ac3..95b6a71373b 100644
--- a/addons/web/static/src/legacy/js/core/misc.js
+++ b/addons/web/static/src/legacy/js/core/misc.js
@@ -31,7 +31,7 @@ var Throbber = Widget.extend({
                 return;
             var seconds = (new Date().getTime() - self.start_time) / 1000;
             var mes;
-            _.each(messages_by_seconds(), function(el) {
+            messages_by_seconds().forEach((el) => {
                 if (seconds >= el[0])
                     mes = el[1];
             });
@@ -58,7 +58,7 @@ if ($.blockUI) {
 function blockAccessKeys() {
     var elementWithAccessKey = [];
     elementWithAccessKey = document.querySelectorAll('[accesskey]');
-    _.each(elementWithAccessKey, function (elem) {
+    elementWithAccessKey.forEach((elem) => {
         elem.setAttribute("data-accesskey",elem.getAttribute('accesskey'));
         elem.removeAttribute('accesskey');
     });
@@ -67,7 +67,7 @@ function blockAccessKeys() {
 function unblockAccessKeys() {
     var elementWithDataAccessKey = [];
     elementWithDataAccessKey = document.querySelectorAll('[data-accesskey]');
-    _.each(elementWithDataAccessKey, function (elem) {
+    elementWithDataAccessKey.forEach((elem) => {
         elem.setAttribute('accesskey', elem.getAttribute('data-accesskey'));
         elem.removeAttribute('data-accesskey');
     });
diff --git a/addons/web/static/src/legacy/js/core/mixins.js b/addons/web/static/src/legacy/js/core/mixins.js
index 4644e1a9ec7..ad0302e6c32 100644
--- a/addons/web/static/src/legacy/js/core/mixins.js
+++ b/addons/web/static/src/legacy/js/core/mixins.js
@@ -185,12 +185,12 @@ var Events = Class.extend({
 
     callbackList: function () {
         var lst = [];
-        _.each(this._callbacks || {}, function (el, eventName) {
+        for (const [eventName, el] of Object.entries(this._callbacks || {})) {
             var node = el;
             while ((node = node.next) && node.next) {
                 lst.push([eventName, node.callback, node.context]);
             }
-        });
+        }
         return lst;
     },
 
@@ -291,7 +291,7 @@ var EventDispatcherMixin = Object.assign({}, ParentedMixin, {
             throw new Error("Event handler must be a function.");
         }
         events = events.split(/\s+/);
-        _.each(events, function (eventName) {
+        events.forEach((eventName) => {
             self.__edispatcherEvents.on(eventName, func, dest);
             if (dest && dest.__eventDispatcherMixin) {
                 dest.__edispatcherRegisteredEvents.push({name: eventName, func: func, source: self});
@@ -302,7 +302,7 @@ var EventDispatcherMixin = Object.assign({}, ParentedMixin, {
     off: function (events, dest, func) {
         var self = this;
         events = events.split(/\s+/);
-        _.each(events, function (eventName) {
+        events.forEach((eventName) => {
             self.__edispatcherEvents.off(eventName, func, dest);
             if (dest && dest.__eventDispatcherMixin) {
                 dest.__edispatcherRegisteredEvents = dest.__edispatcherRegisteredEvents.filter(el => {
@@ -342,16 +342,18 @@ var EventDispatcherMixin = Object.assign({}, ParentedMixin, {
     },
     destroy: function () {
         var self = this;
-        _.each(this.__edispatcherRegisteredEvents, function (event) {
+        this.__edispatcherRegisteredEvents.forEach((event) => {
             event.source.__edispatcherEvents.off(event.name, event.func, self);
         });
         this.__edispatcherRegisteredEvents = [];
-        _.each(this.__edispatcherEvents.callbackList(), function (cal) {
-            this.off(cal[0], cal[2], cal[1]);
-        }, this);
+        this.__edispatcherEvents.callbackList().forEach(
+            ((cal) => {
+                this.off(cal[0], cal[2], cal[1]);
+            }).bind(this)
+        );
         this.__edispatcherEvents.off();
         ParentedMixin.destroy.call(this);
-    }
+    },
 });
 
 /**
@@ -376,7 +378,7 @@ var PropertiesMixin = Object.assign({}, EventDispatcherMixin, {
         }
         var self = this;
         var changed = false;
-        _.each(map, function (val, key) {
+        for (const [key, val] of Object.entries(map)) {
             var tmp = self.__getterSetterInternalMap[key];
             if (tmp === val)
                 return;
@@ -399,7 +401,7 @@ var PropertiesMixin = Object.assign({}, EventDispatcherMixin, {
                     oldValue: tmp,
                     newValue: val
                 });
-        });
+        }
         if (changed)
             self.trigger("change", self);
     },
diff --git a/addons/web/static/src/legacy/js/core/py_utils.js b/addons/web/static/src/legacy/js/core/py_utils.js
index 5e0339dcc53..b84a953e492 100644
--- a/addons/web/static/src/legacy/js/core/py_utils.js
+++ b/addons/web/static/src/legacy/js/core/py_utils.js
@@ -175,7 +175,7 @@ function eval_domains(domains, evaluation_context) {
  */
 function get_normalized_domain(domain_array) {
     var expected = 1; // Holds the number of expected domain expressions
-    _.each(domain_array, function (item) {
+    domain_array.forEach((item) => {
         if (item === "&" || item === "|") {
             expected++;
         } else if (item !== "!") {
diff --git a/addons/web/static/src/legacy/js/core/translation.js b/addons/web/static/src/legacy/js/core/translation.js
index e6881dceda1..dada0ead173 100644
--- a/addons/web/static/src/legacy/js/core/translation.js
+++ b/addons/web/static/src/legacy/js/core/translation.js
@@ -24,7 +24,7 @@ var TranslationDataBase = Class.extend(/** @lends instance.TranslationDataBase#
         if (_.include(modules, "web")) {
             modules = ["web"].concat(_.without(modules, "web"));
         }
-        _.each(modules, function(name) {
+        modules.forEach((name) => {
             self.add_module_translation(translation_bundle.modules[name]);
         });
         if (translation_bundle.lang_parameters) {
@@ -34,7 +34,7 @@ var TranslationDataBase = Class.extend(/** @lends instance.TranslationDataBase#
     },
     add_module_translation: function(mod) {
         var self = this;
-        _.each(mod.messages, function(message) {
+        mod.messages.forEach((message) => {
             self.db[message.id] = message.string;
         });
     },
diff --git a/addons/web/static/src/legacy/js/core/utils.js b/addons/web/static/src/legacy/js/core/utils.js
index 10fbd5603c5..5ca513bf99c 100644
--- a/addons/web/static/src/legacy/js/core/utils.js
+++ b/addons/web/static/src/legacy/js/core/utils.js
@@ -1077,7 +1077,9 @@ const utils = {
      */
     traverse: function (tree, f) {
         if (f(tree)) {
-            _.each(tree.children, function (c) { utils.traverse(c, f); });
+            Object.values(tree.children || {}).forEach((c) => {
+                utils.traverse(c, f);
+            });
         }
     },
     /**
@@ -1090,7 +1092,7 @@ const utils = {
     traversePath: function (tree, f, path) {
         path = path || [];
         f(tree, path);
-        _.each(tree.children, function (node) {
+        Object.values(tree.children || {}).forEach((node) => {
             utils.traversePath(node, f, path.concat(tree));
         });
     },
diff --git a/addons/web/static/src/legacy/js/fields/relational_fields.js b/addons/web/static/src/legacy/js/fields/relational_fields.js
index 2eba90b6403..0c7fa920777 100644
--- a/addons/web/static/src/legacy/js/fields/relational_fields.js
+++ b/addons/web/static/src/legacy/js/fields/relational_fields.js
@@ -254,7 +254,7 @@ var FieldMany2One = AbstractField.extend({
         this.$input.autocomplete({
             source: function (req, resp) {
                 self.suggestions = [];
-                _.each(self._autocompleteSources, function (source) {
+                self._autocompleteSources.forEach((source) => {
                     // Resets the results for this source
                     source.results = [];
 
@@ -357,7 +357,7 @@ var FieldMany2One = AbstractField.extend({
      */
     _concatenateAutocompleteResults: function () {
         var results = [];
-        _.each(this._autocompleteSources, function (source) {
+        this._autocompleteSources.forEach((source) => {
             if (source.results && source.results.length) {
                 results = results.concat(source.results);
             } else if (source.loading) {
@@ -1630,7 +1630,7 @@ var FieldRadio = FieldSelection.extend({
         this.$el.empty();
         this.$el.attr('role', 'radiogroup')
             .attr('aria-label', this.string);
-        _.each(this.values, function (value, index) {
+        this.values.forEach((value, index) => {
             self.$el.append(qweb.render('FieldRadio.button', {
                 checked: value[0] === currentValue,
                 id: self.unique_id + '_' + value[0],
diff --git a/addons/web/static/src/legacy/js/public/public_root.js b/addons/web/static/src/legacy/js/public/public_root.js
index c0da3596fc8..ccbef75e350 100644
--- a/addons/web/static/src/legacy/js/public/public_root.js
+++ b/addons/web/static/src/legacy/js/public/public_root.js
@@ -324,8 +324,8 @@ export const PublicRoot = publicWidget.RootWidget.extend({
      * @private
      */
     _onWebsiteFormSubmit: function (ev) {
-        var $buttons = $(ev.currentTarget).find('button[type="submit"], a.a-submit');
-        _.each($buttons, function (btn) {
+        var $buttons = $(ev.currentTarget).find('button[type="submit"], a.a-submit').toArray();
+        $buttons.forEach((btn) => {
             var $btn = $(btn);
             $btn.prepend('<i class="fa fa-circle-o-notch fa-spin"></i> ');
             $btn.prop('disabled', true);
diff --git a/addons/web/static/src/legacy/js/public/public_widget.js b/addons/web/static/src/legacy/js/public/public_widget.js
index 182abdfec2f..88b7943a1a2 100644
--- a/addons/web/static/src/legacy/js/public/public_widget.js
+++ b/addons/web/static/src/legacy/js/public/public_widget.js
@@ -197,7 +197,7 @@ var PublicWidget = Widget.extend({
         var originalEvents = this.events;
 
         var events = {};
-        _.each(this.events, function (method, event) {
+        Object.entries(this.events || {}).forEach(([event, method]) => {
             // If the method is a function, use the default Widget system
             if (typeof method !== 'string') {
                 events[event] = method;
diff --git a/addons/web/static/src/legacy/js/services/core.js b/addons/web/static/src/legacy/js/services/core.js
index 9f566654388..59389298235 100644
--- a/addons/web/static/src/legacy/js/services/core.js
+++ b/addons/web/static/src/legacy/js/services/core.js
@@ -14,12 +14,12 @@ import translation from "web.translation";
  */
 var bus = new Bus();
 
-_.each('click,dblclick,keydown,keypress,keyup'.split(','), function (evtype) {
+["click","dblclick","keydown","keypress","keyup"].forEach((evtype) => {
     $('html').on(evtype, function (ev) {
         bus.trigger(evtype, ev);
     });
 });
-_.each('resize,scroll'.split(','), function (evtype) {
+["resize", "scroll"].forEach((evtype) => {
     $(window).on(evtype, function (ev) {
         bus.trigger(evtype, ev);
     });
diff --git a/addons/web/static/src/legacy/js/views/basic/basic_model.js b/addons/web/static/src/legacy/js/views/basic/basic_model.js
index e3be636bc26..f7d197bcb15 100644
--- a/addons/web/static/src/legacy/js/views/basic/basic_model.js
+++ b/addons/web/static/src/legacy/js/views/basic/basic_model.js
@@ -370,7 +370,7 @@ var BasicModel = AbstractModel.extend({
                 context: context,
             })
             .then(function () {
-                _.each(records, function (record) {
+                records.forEach((record) => {
                     // discard any changes to prevent creating a new record with auto-save
                     self.discardChanges(record.id);
                     var parent = record.parentID && self.localData[record.parentID];
@@ -610,7 +610,7 @@ var BasicModel = AbstractModel.extend({
         this._sortList(element);
 
         if (!element.orderedResIDs && element._changes) {
-            _.each(element._changes, function (change) {
+            element._changes.forEach((change) => {
                 if (change.operation === 'ADD' && change.isNew) {
                     element.data = _.without(element.data, change.id);
                     if (change.position === 'top') {
@@ -842,13 +842,13 @@ var BasicModel = AbstractModel.extend({
         var self = this;
         var defs = [];
         var record_fields = {};
-        _.each(fields, function (field) {
+        fields.forEach((field) => {
             record_fields[field.name] = _.pick(field, 'type', 'relation', 'domain', 'selection');
         });
         fieldInfo = fieldInfo || {};
         var fieldsInfo = {};
         fieldsInfo.default = {};
-        _.each(fields, function (field) {
+        fields.forEach((field) => {
             fieldsInfo.default[field.name] = fieldInfo[field.name] || {};
         });
         var record = this._makeDataPoint({
@@ -857,7 +857,7 @@ var BasicModel = AbstractModel.extend({
             fieldsInfo: fieldsInfo,
             viewType: 'default',
         });
-        _.each(fields, function (field) {
+        fields.forEach((field) => {
             var dataPoint;
             record.data[field.name] = null;
             if (field.type === 'many2one') {
@@ -890,7 +890,7 @@ var BasicModel = AbstractModel.extend({
             } else if (field.type === 'one2many' || field.type === 'many2many') {
                 var relatedFieldsInfo = {};
                 relatedFieldsInfo.default = {};
-                _.each(field.fields, function (field) {
+                (field.fields || []).forEach((field) => {
                     relatedFieldsInfo.default[field.name] = {};
                 });
                 var dpParams = {
@@ -910,7 +910,7 @@ var BasicModel = AbstractModel.extend({
                     if (_.isObject(field.value[0])) {
                         dpParams.res_ids = _.pluck(field.value, 'id');
                         dataPoint = self._makeDataPoint(dpParams);
-                        _.each(field.value, function (data) {
+                        field.value.forEach((data) => {
                             var recordDP = self._makeDataPoint({
                                 data: data,
                                 modelName: field.relation,
@@ -1061,7 +1061,7 @@ var BasicModel = AbstractModel.extend({
                     if (data.data.length) {
                         var dataType = self.localData[data.data[0]].type;
                         if (dataType === 'record') {
-                            _.each(data.data, function (dataPoint) {
+                            data.data.forEach((dataPoint) => {
                                 var recordData = self.localData[dataPoint].data;
                                 var inRecords = _.findWhere(records, {id: recordData.id});
                                 if (inRecords) {
@@ -1079,7 +1079,7 @@ var BasicModel = AbstractModel.extend({
                         }
                     }
                     data.res_ids = [];
-                    _.each(data.data, function (d) {
+                    data.data.forEach((d) => {
                         var dataPoint = self.localData[d];
                         if (dataPoint.type === 'record') {
                             data.res_ids.push(dataPoint.res_id);
@@ -1144,7 +1144,7 @@ var BasicModel = AbstractModel.extend({
 
             if (method === 'create') {
                 var fieldNames = record.getFieldNames();
-                _.each(fieldNames, function (name) {
+                fieldNames.forEach((name) => {
                     if (changes[name] === null) {
                         delete changes[name];
                     }
@@ -1238,7 +1238,7 @@ var BasicModel = AbstractModel.extend({
         if (list.type === 'record') {
             return;
         } else if (list._changes) {
-            _.each(list._changes, function (change) {
+            list._changes.forEach((change) => {
                 delete change.isNew;
             });
         }
@@ -1460,7 +1460,7 @@ var BasicModel = AbstractModel.extend({
         var additionalContexts = options && options.context;
         var makeDefaultRecords = [];
         if (additionalContexts){
-            _.each(additionalContexts, function (context) {
+            additionalContexts.forEach((context) => {
                 params.context = self._getContext(list, {additionalContext: context, full: true, sanitize_default_values: true});
                 makeDefaultRecords.push(self._makeDefaultRecord(list.model, params));
             });
@@ -1471,7 +1471,7 @@ var BasicModel = AbstractModel.extend({
 
         return Promise.all(makeDefaultRecords).then(function (resultIds){
             var ids = [];
-            _.each(resultIds, function (id){
+            resultIds.forEach((id) => {
                 ids.push(id);
 
                 list._changes.push({operation: 'ADD', id: id, position: position, isNew: true});
@@ -1800,7 +1800,7 @@ var BasicModel = AbstractModel.extend({
 
                 // save it in case of a [5] which will remove the _changes
                 var oldChanges = list._changes;
-                _.each(val, function (command) {
+                val.forEach((command) => {
                     var rec, recID;
                     if (command[0] === 0 || command[0] === 1) {
                         // CREATE or UPDATE
@@ -1860,7 +1860,7 @@ var BasicModel = AbstractModel.extend({
                         list._changes = [{operation: 'REMOVE_ALL'}];
                     } else if (command[0] === 6) {
                         list._changes = [{operation: 'REMOVE_ALL'}];
-                        _.each(command[2], function (resID) {
+                        Object.values(command[2] || {}).forEach((resID) => {
                             linkRecord(list, resID);
                         });
                     }
@@ -1988,7 +1988,7 @@ var BasicModel = AbstractModel.extend({
                 }
 
                 var list_records = {};
-                _.each(data, function (d) {
+                data.forEach((d) => {
                     rec = self._makeDataPoint({
                         context: record.context,
                         modelName: field.relation,
@@ -2016,7 +2016,7 @@ var BasicModel = AbstractModel.extend({
                         args: [_.pluck(data, 'id'), fieldNames],
                         context: Object.assign({}, record.context, field.context, list.getContext()),
                     }).then(function (records) {
-                        _.each(records, function (record) {
+                        records.forEach((record) => {
                             list_records[record.id].data = record;
                             self._parseServerData(fieldNames, list, record);
                         });
@@ -2036,7 +2036,7 @@ var BasicModel = AbstractModel.extend({
                 createOptions.viewType = fieldInfo.mode;
 
                 def = this._addX2ManyDefaultRecord(list, createOptions).then(function (ids) {
-                    _.each(ids, function(id){
+                    ids.forEach((id) => {
                         if (command.position === 'bottom' && list.orderedResIDs && list.orderedResIDs.length >= list.limit) {
                             list.tempLimitIncrement = (list.tempLimitIncrement || 0) + 1;
                             list.limit += 1;
@@ -2121,7 +2121,7 @@ var BasicModel = AbstractModel.extend({
                 return Promise.all([addDef, removedDef]);
             case 'MULTI':
                 // allows batching multiple operations
-                _.each(command.commands, function (innerCommand){
+                command.commands.forEach((innerCommand) => {
                     defs.push(self._applyX2ManyChange(
                         record,
                         fieldName,
@@ -2170,7 +2170,7 @@ var BasicModel = AbstractModel.extend({
             var to = options.to === 0 ? 0 : (options.to || changes.length);
             changes = changes.slice(options.from || 0, to);
         }
-        _.each(changes, function (change) {
+        changes.forEach((change) => {
             var relRecord;
             if (change.id) {
                 relRecord = self.localData[change.id];
@@ -2234,7 +2234,7 @@ var BasicModel = AbstractModel.extend({
         // and their subviews
         function generateSpecs(fieldsInfo, fields, prefix) {
             prefix = prefix || '';
-            _.each(Object.keys(fieldsInfo), function (name) {
+            Object.keys(fieldsInfo).forEach((name) => {
                 var field = fields[name];
                 var fieldInfo = fieldsInfo[name];
                 var key = prefix + name;
@@ -2243,7 +2243,7 @@ var BasicModel = AbstractModel.extend({
                     hasOnchange = true;
                 }
                 if (field.type === 'one2many' || field.type === 'many2many') {
-                    _.each(fieldInfo.views, function (view) {
+                    Object.values(fieldInfo.views || {}).forEach((view) => {
                         generateSpecs(view.fieldsInfo[view.type], view.fields, key + '.');
                     });
                 }
@@ -2492,7 +2492,7 @@ var BasicModel = AbstractModel.extend({
         var ids = [];
         list = this._applyX2ManyOperations(list);
 
-        _.each(list.data, function (localId) {
+        list.data.forEach((localId) => {
             var record = self.localData[localId];
             var data = record._changes || record.data;
             var many2oneId = data[fieldName];
@@ -2515,7 +2515,7 @@ var BasicModel = AbstractModel.extend({
                 context: list.context,
             })
             .then(function (name_gets) {
-                _.each(records, function (record) {
+                records.forEach((record) => {
                     var nameGet = name_gets.find(nameGet => nameGet[0] === record.data.id);
                     record.data.display_name = nameGet[1];
                 });
@@ -2619,9 +2619,9 @@ var BasicModel = AbstractModel.extend({
             args: [ids],
             context: self.localData[parent].getContext({fieldName: fieldName, withoutRecordData: true}),
         }).then(function (result) {
-            _.each(result, function (el) {
+            result.forEach((el) => {
                 var parentIDs = datapoints[el[0]];
-                _.each(parentIDs, function (parentID) {
+                parentIDs.forEach((parentID) => {
                     var parent = self.localData[parentID];
                     var referenceDp = self._makeDataPoint({
                         data: {
@@ -2649,7 +2649,7 @@ var BasicModel = AbstractModel.extend({
         var self = this;
         var defs = [];
         var fieldNames = options && options.fieldNames || record.getFieldNames();
-        _.each(fieldNames, function (fieldName) {
+        fieldNames.forEach((fieldName) => {
             var field = record.fields[fieldName];
             if (field.type === 'reference') {
                 var def = self._fetchReference(record, fieldName).then(function (dataPoint) {
@@ -2679,7 +2679,7 @@ var BasicModel = AbstractModel.extend({
         var toFetch = this._getDataToFetchByModel(list, fieldName);
         var defs = [];
         // one name_get by model
-        _.each(toFetch, function (datapoints, model) {
+        Object.entries(toFetch).forEach(([model, datapoints]) => {
             defs.push(self._fetchReferenceData(datapoints, model, fieldName));
         });
 
@@ -2715,14 +2715,14 @@ var BasicModel = AbstractModel.extend({
 
         // collect ids by model
         var toFetch = {};
-        _.each(list.data, function (groupIndex) {
+        list.data.forEach((groupIndex) => {
             var group = self.localData[groupIndex];
             self._getDataToFetchByModel(group, fieldName, toFetch);
         });
 
         var defs = [];
         // one name_get by model
-        _.each(toFetch, function (datapoints, model) {
+        Object.entries(toFetch).forEach(([model, datapoints]) => {
             defs.push(self._fetchReferenceData(datapoints, model, fieldName));
         });
 
@@ -2958,7 +2958,7 @@ var BasicModel = AbstractModel.extend({
         var foldField = fieldInfo.options.fold_field;
         var fieldsToRead = foldField ? [foldField] : [];
         return this._fetchSpecialMany2ones(record, fieldName, fieldInfo, fieldsToRead).then(function (m2os) {
-            _.each(m2os, function (m2o) {
+            Object.values(m2os || {}).forEach((m2o) => {
                 m2o.fold = foldField ? m2o[foldField] : false;
             });
             return m2os;
@@ -3042,7 +3042,7 @@ var BasicModel = AbstractModel.extend({
         options = options || {};
         var fieldNames = options.fieldNames || record.getFieldNames(options);
         var viewType = options.viewType || record.viewType;
-        _.each(fieldNames, function (fieldName) {
+        fieldNames.forEach((fieldName) => {
             var field = record.fields[fieldName];
             if (field.type === 'one2many' || field.type === 'many2many') {
                 var fieldInfo = record.fieldsInfo[viewType][fieldName];
@@ -3119,10 +3119,10 @@ var BasicModel = AbstractModel.extend({
     _fetchX2ManySingleBatch: function (list, fieldName) {
         var self = this;
         var toFetch = {};
-        _.each(list.data, function (groupIndex) {
+        list.data.forEach((groupIndex) => {
             var group = self.localData[groupIndex];
             var nextDataToFetch = self._getDataToFetch(group, fieldName);
-            _.each(Object.keys(nextDataToFetch), function (id) {
+            Object.keys(nextDataToFetch).forEach((id) => {
                 if (toFetch[id]) {
                     toFetch[id] = toFetch[id].concat(nextDataToFetch[id]);
                 } else {
@@ -3304,7 +3304,7 @@ var BasicModel = AbstractModel.extend({
                 var oldResIDs = list.res_ids.slice(0);
                 var relRecordAdded = [];
                 var relRecordUpdated = [];
-                _.each(list._changes, function (change) {
+                Object.values(list._changes || {}).forEach((change) => {
                     if (change.operation === 'ADD' && change.id) {
                         relRecordAdded.push(self.localData[change.id]);
                     } else if (change.operation === 'UPDATE' && !self.isNew(change.id)) {
@@ -3325,13 +3325,13 @@ var BasicModel = AbstractModel.extend({
                     // and 2) to guard against concurrent updates (policy: force
                     // a complete override of the actual value of the m2m)
                     commands[fieldName].push(x2ManyCommands.replace_with(realIDs));
-                    _.each(relRecordCreated, function (relRecord) {
+                    relRecordCreated.forEach((relRecord) => {
                         var changes = self._generateChanges(relRecord, options);
                         commands[fieldName].push(x2ManyCommands.create(relRecord.ref, changes));
                     });
                     // generate update commands for records that have been
                     // updated (it may happen with editable lists)
-                    _.each(relRecordUpdated, function (relRecord) {
+                    relRecordUpdated.forEach((relRecord) => {
                         var changes = self._generateChanges(relRecord, options);
                         if (!_.isEmpty(changes)) {
                             var command = x2ManyCommands.update(relRecord.res_id, changes);
@@ -3533,7 +3533,7 @@ var BasicModel = AbstractModel.extend({
                 return;
             }
 
-            _.each(record.data[fieldName], function (id) {
+            Object.values(record.data[fieldName] || {}).forEach((id) => {
                 toFetch[id] = toFetch[id] || [];
                 toFetch[id].push(record);
             });
@@ -3571,7 +3571,7 @@ var BasicModel = AbstractModel.extend({
     _getDataToFetchByModel: function (list, fieldName, toFetchAcc) {
         var self = this;
         var toFetch = toFetchAcc || {};
-        _.each(list.data, function (dataPoint) {
+        list.data.forEach((dataPoint) => {
             var record = self.localData[dataPoint];
             var value = record.data[fieldName];
             // if the reference field has already been fetched, the value is a
@@ -3828,11 +3828,11 @@ var BasicModel = AbstractModel.extend({
      */
     _getMany2OneFieldNames: function (datapoint) {
         var many2ones = [];
-        _.each(datapoint.fields, function (field, name) {
+        for (const [name, field] of Object.entries(datapoint.fields)) {
             if (field.type === 'many2one') {
                 many2ones.push(name);
             }
-        });
+        }
         return many2ones;
     },
     /**
@@ -4043,7 +4043,7 @@ var BasicModel = AbstractModel.extend({
         var self = this;
         var isValid = true;
         var element = this.localData[id];
-        _.each(element._changes, function (command) {
+        Object.values(element._changes || {}).forEach((command) => {
             if (command.operation === 'DELETE' ||
                     command.operation === 'FORGET' ||
                     (command.operation === 'ADD' &&  !command.isNew)||
@@ -4052,7 +4052,7 @@ var BasicModel = AbstractModel.extend({
             }
             var recordData = self.get(command.id, {raw: true}).data;
             var record = self.localData[command.id];
-            _.each(element.getFieldNames(), function (fieldName) {
+            element.getFieldNames().forEach((fieldName) => {
                 var field = element.fields[fieldName];
                 var fieldInfo = element.fieldsInfo[element.viewType][fieldName];
                 var rawModifiers = fieldInfo.modifiers || {};
@@ -4312,7 +4312,7 @@ var BasicModel = AbstractModel.extend({
      */
     _parseServerData: function (fieldNames, element, data) {
         var self = this;
-        _.each(fieldNames, function (fieldName) {
+        fieldNames.forEach((fieldName) => {
             var field = element.fields[fieldName];
             var val = data[fieldName];
             if (field.type === 'many2one') {
@@ -4500,7 +4500,7 @@ var BasicModel = AbstractModel.extend({
         var viewType = options && options.viewType || record.viewType;
         var defs = [];
 
-        _.each(record.getFieldNames(options), function (name) {
+        record.getFieldNames(options).forEach((name) => {
             var field = record.fields[name];
             var fieldInfo = record.fieldsInfo[viewType][name] || {};
             var options = fieldInfo.options || {};
@@ -4593,7 +4593,7 @@ var BasicModel = AbstractModel.extend({
         if (!isCommandList) {
             commands = [[6, false, commands]];
         }
-        _.each(commands, function (value) {
+        commands.forEach((value) => {
             // value is a command
             if (value[0] === 0) {
                 // CREATE
@@ -4610,7 +4610,7 @@ var BasicModel = AbstractModel.extend({
                 x2manyList._cache[r.res_id] = r.id;
 
                 // this is necessary so the fields are initialized
-                _.each(r.getFieldNames(), function (fieldName) {
+                r.getFieldNames().forEach((fieldName) => {
                     r.data[fieldName] = null;
                 });
 
@@ -4654,7 +4654,7 @@ var BasicModel = AbstractModel.extend({
             }
             if (value[0] === 6) {
                 // REPLACE_WITH
-                _.each(value[2], function (res_id) {
+                value[2].forEach((res_id) => {
                     x2manyList._changes.push({operation: 'ADD', resID: res_id});
                 });
                 var def = self._readUngroupedList(x2manyList).then(function () {
@@ -4668,7 +4668,7 @@ var BasicModel = AbstractModel.extend({
         });
 
         // fetch many2ones display_name
-        _.each(Object.keys(many2ones), function (name) {
+        Object.keys(many2ones).forEach((name) => {
             defs.push(self._fetchNameGets(x2manyList, name));
         });
 
@@ -4716,7 +4716,7 @@ var BasicModel = AbstractModel.extend({
             }));
         }
         return def.then(function (records) {
-            _.each(resIDs, function (id) {
+            resIDs.forEach((id) => {
                 var dataPoint;
                 var data = _.findWhere(records, {id: id});
                 if (id in list._cache) {
@@ -4741,7 +4741,7 @@ var BasicModel = AbstractModel.extend({
                     list._cache[id] = dataPoint.id;
                 }
                 // set the dataPoint id in potential 'ADD' operation adding the current record
-                _.each(list._changes, function (change) {
+                Object.values(list._changes || {}).forEach((change) => {
                     if (change.operation === 'ADD' && !change.id && change.resID === id) {
                         change.id = dataPoint.id;
                     }
@@ -4796,14 +4796,14 @@ var BasicModel = AbstractModel.extend({
                 var defs = [];
                 var openGroupCount = 0;
 
-                _.each(groups, function (group) {
+                groups.forEach((group) => {
                     var aggregateValues = {};
-                    _.each(group, function (value, key) {
+                    for (const [key, value] of Object.entries(group)) {
                         if (_.contains(fields, key) && key !== groupByField &&
                             AGGREGATABLE_TYPES.includes(list.fields[key].type)) {
                                 aggregateValues[key] = value;
                         }
-                    });
+                    }
                     // When a view is grouped, we need to display the name of each group in
                     // the 'title'.
                     var value = group[groupByField];
@@ -4871,7 +4871,7 @@ var BasicModel = AbstractModel.extend({
                     // Note that these groups are put after existing groups so
                     // the order is not conserved. A sort *might* be useful.
                     var emptyGroupsIDs = _.difference(_.pluck(previousGroups, 'id'), list.data);
-                    _.each(emptyGroupsIDs, function (groupID) {
+                    emptyGroupsIDs.forEach((groupID) => {
                         list.data.push(groupID);
                         var emptyGroup = self.localData[groupID];
                         // this attribute hasn't been updated in the previous
@@ -4993,7 +4993,7 @@ var BasicModel = AbstractModel.extend({
             }
         } else if (element._changes) {
             delete element.tempLimitIncrement;
-            _.each(element._changes, function (change) {
+            element._changes.forEach((change) => {
                 delete change.isNew;
             });
         }
@@ -5161,7 +5161,7 @@ var BasicModel = AbstractModel.extend({
             idsInRange = list.res_ids;
         }
         list.data = [];
-        _.each(idsInRange, function (id) {
+        idsInRange.forEach((id) => {
             if (list._cache[id]) {
                 list.data.push(list._cache[id]);
             }
@@ -5320,10 +5320,10 @@ var BasicModel = AbstractModel.extend({
         var viewType = view ? view.type : fieldInfo.viewType;
         var id2Values = new Map(values.map((value) => [value.id, value]))
 
-        _.each(records, function (record) {
+        records.forEach((record) => {
             var x2mList = self.localData[record.data[fieldName]];
             x2mList.data = [];
-            _.each(x2mList.res_ids, function (res_id) {
+            x2mList.res_ids.forEach((res_id) => {
                 var dataPoint = self._makeDataPoint({
                     modelName: field.relation,
                     data: id2Values.get(res_id),
@@ -5408,7 +5408,7 @@ var BasicModel = AbstractModel.extend({
         }
         if (element.type === 'list') {
             element = this._applyX2ManyOperations(element);
-            _.each(element.data, function (elemId) {
+            element.data.forEach((elemId) => {
                 var elem = self.localData[elemId];
                 self._visitChildren(elem, fn);
             });
diff --git a/addons/web/static/src/legacy/js/views/standalone_field_manager_mixin.js b/addons/web/static/src/legacy/js/views/standalone_field_manager_mixin.js
index 5d0a1f08d65..b2f71e46912 100644
--- a/addons/web/static/src/legacy/js/views/standalone_field_manager_mixin.js
+++ b/addons/web/static/src/legacy/js/views/standalone_field_manager_mixin.js
@@ -41,11 +41,11 @@ var StandaloneFieldManagerMixin = Object.assign({}, FieldManagerMixin, {
     _confirmChange: function (id, fields, event) {
         var result = FieldManagerMixin._confirmChange.apply(this, arguments);
         var record = this.model.get(id);
-        _.each(this.registeredWidgets[id], function (widget, fieldName) {
+        for (const [fieldName, widget] of Object.entries(this.registeredWidgets[id])) {
             if (_.contains(fields, fieldName)) {
                 widget.reset(record, event);
             }
-        });
+        }
         return result;
     },
 
diff --git a/addons/web/static/src/legacy/js/widgets/colorpicker.js b/addons/web/static/src/legacy/js/widgets/colorpicker.js
index 8c7594d220c..0d95af3cb7d 100644
--- a/addons/web/static/src/legacy/js/widgets/colorpicker.js
+++ b/addons/web/static/src/legacy/js/widgets/colorpicker.js
@@ -135,9 +135,9 @@ var ColorpickerWidget = Widget.extend({
         var self = this;
 
         // Update inputs
-        _.each(this.colorComponents, function (value, color) {
+        for (const [color, value] of Object.entries(this.colorComponents)) {
             self.$(`.o_${color}_input`).val(value);
-        });
+        }
 
         // Update preview
         this.$('.o_color_preview').css('background-color', this.colorComponents.cssColor);
diff --git a/addons/web/static/src/legacy/js/widgets/domain_selector.js b/addons/web/static/src/legacy/js/widgets/domain_selector.js
index e4c4d18b055..538992fde31 100644
--- a/addons/web/static/src/legacy/js/widgets/domain_selector.js
+++ b/addons/web/static/src/legacy/js/widgets/domain_selector.js
@@ -222,7 +222,7 @@ var DomainTree = DomainNode.extend({
     getDomain: function () {
         var childDomains = [];
         var nbChildren = 0;
-        _.each(this.children, function (child) {
+        this.children.forEach((child) => {
             var childDomain = child.getDomain();
             if (childDomain.length) {
                 nbChildren++;
@@ -276,10 +276,12 @@ var DomainTree = DomainNode.extend({
             this.children.push(node);
             return;
         }
-        _.each(node.children, (function (child) {
-            child.setParent(this);
-            this.children.push(child);
-        }).bind(this));
+        node.children.forEach(
+            ((child) => {
+                child.setParent(this);
+                this.children.push(child);
+            }).bind(this)
+        );
         node.destroy();
     },
     /**
@@ -380,7 +382,7 @@ var DomainTree = DomainNode.extend({
         return Promise.all(_.map(children, (function (child) {
             return child.appendTo($div);
         }).bind(this))).then((function () {
-            _.each(children, function (child) {
+            children.forEach((child) => {
                 child.$el.appendTo($to); // Forced to do it this way so that the
                                          // children are not misordered
             });
@@ -570,10 +572,14 @@ var DomainSelector = DomainTree.extend({
             if (_redrawId !== this._redrawId) {
                 return;
             }
-            _.each(oldChildren, function (child) { child.destroy(); });
+            oldChildren.forEach((child) => { child.destroy(); });
             this.renderElement();
             this._postRender();
-            _.each(this.children, (function (child) { child.$el.appendTo(this.$childrenContainer); }).bind(this));
+                this.children.forEach(
+                    ((child) => {
+                        child.$el.appendTo(this.$childrenContainer);
+                    }).bind(this)
+                );
         }).bind(this));
     },
 
diff --git a/addons/web/static/src/legacy/legacy_load_views.js b/addons/web/static/src/legacy/legacy_load_views.js
index 0452e28f465..10ad14784cc 100644
--- a/addons/web/static/src/legacy/legacy_load_views.js
+++ b/addons/web/static/src/legacy/legacy_load_views.js
@@ -5,7 +5,7 @@ const domParser = new DOMParser();
 
 function traverse(tree, f) {
     if (f(tree)) {
-        _.each(tree.children, function (c) {
+        Object.values(tree.children || {}).forEach((c) => {
             traverse(c, f);
         });
     }
@@ -66,7 +66,9 @@ export function processArch(arch, viewType, resModel, models) {
                 const viewFieldsInfo = models[resModel][fieldName];
                 const nodeString = node.getAttribute("string");
                 if (nodeString === null && viewFieldsInfo === undefined) {
-                    throw new Error(`Missing field string information for the field '${fieldName}' from the '${resModel}' model`);
+                    throw new Error(
+                        `Missing field string information for the field '${fieldName}' from the '${resModel}' model`
+                    );
                 }
                 viewFields[fieldName] = {
                     ...viewFieldsInfo,
diff --git a/addons/web/static/src/views/basic_relational_model.js b/addons/web/static/src/views/basic_relational_model.js
index 454f3896eba..77fcf55fe7b 100644
--- a/addons/web/static/src/views/basic_relational_model.js
+++ b/addons/web/static/src/views/basic_relational_model.js
@@ -1218,9 +1218,9 @@ export class RelationalModel extends Model {
                             // avoid losing the initial fields (display_name)
                             const fieldViews = fieldInfo.views || fieldInfo.fieldsInfo || {};
                             const defaultFieldInfo = legRec.data[name].fieldsInfo.default;
-                            _.each(fieldViews, function (fieldView) {
+                            Object.values(fieldViews).forEach((fieldView) => {
                                 _.defaults(fieldView.fields, defaultFieldInfo);
-                                _.each(fieldView.fieldsInfo, function (x2mFieldInfo) {
+                                Object.values(fieldView.fieldsInfo).forEach((x2mFieldInfo) => {
                                     _.defaults(x2mFieldInfo, defaultFieldInfo);
                                 });
                             });
diff --git a/addons/web/static/tests/helpers/mock_server.js b/addons/web/static/tests/helpers/mock_server.js
index 51c6e2a3b4a..32a160d98af 100644
--- a/addons/web/static/tests/helpers/mock_server.js
+++ b/addons/web/static/tests/helpers/mock_server.js
@@ -357,8 +357,8 @@ export class MockServer {
                     defaultValues[attr] = !!field[attr];
                 });
                 // LPE: what is this ?
-                /*                _.each(field.states || {}, function (modifs, state) {
-                            _.each(modifs, function (modif) {
+                /*    for (const [state, modifs] of Object.entries(field.states || {})) {      
+                            modifs.forEach((modif) => {
                                 if (defaultValues[modif[0]] !== modif[1]) {
                                     stateExceptions[modif[0]].append(state);
                                 }
diff --git a/addons/web/static/tests/legacy/helpers/mock_server.js b/addons/web/static/tests/legacy/helpers/mock_server.js
index a77256d89d7..b5cbe83299a 100644
--- a/addons/web/static/tests/legacy/helpers/mock_server.js
+++ b/addons/web/static/tests/legacy/helpers/mock_server.js
@@ -334,24 +334,24 @@ var MockServer = Class.extend({
                 }
                 var defaultValues = {};
                 var stateExceptions = {};
-                _.each(modifiersNames, function (attr) {
+                modifiersNames.forEach((attr) => {
                     stateExceptions[attr] = [];
                     defaultValues[attr] = !!field[attr];
                 });
-                _.each(field.states || {}, function (modifs, state) {
-                    _.each(modifs, function (modif) {
+                for (const [state, modifs] of Object.entries(field.states || {})) {
+                    modifs.forEach((modif) => {
                         if (defaultValues[modif[0]] !== modif[1]) {
                             stateExceptions[modif[0]].append(state);
                         }
                     });
-                });
-                _.each(defaultValues, function (defaultValue, attr) {
+                }
+                for (const [attr, defaultValue] of Object.entries(defaultValues)) {
                     if (stateExceptions[attr].length) {
                         modifiers[attr] = [("state", defaultValue ? "not in" : "in", stateExceptions[attr])];
                     } else {
                         modifiers[attr] = defaultValue;
                     }
-                });
+                }
             } else if (isGroupby && !node._isProcessed) {
                 var groupbyName = node.getAttribute('name');
                 fieldNodes[groupbyName] = node;
@@ -374,7 +374,7 @@ var MockServer = Class.extend({
             }
 
             const inListHeader = inTreeView && node.closest('header');
-            _.each(modifiersNames, function (a) {
+            modifiersNames.forEach((a) => {
                 var mod = node.getAttribute(a);
                 if (mod) {
                     var pyevalContext = window.py.dict.fromJSON(context || {});
@@ -387,7 +387,7 @@ var MockServer = Class.extend({
                 }
             });
 
-            _.each(modifiersNames, function (a) {
+            modifiersNames.forEach((a) => {
                 if (a in modifiers && (!!modifiers[a] === false || (Array.isArray(modifiers[a]) && !modifiers[a].length))) {
                     delete modifiers[a];
                 }
@@ -405,7 +405,7 @@ var MockServer = Class.extend({
         });
 
         let relModel, relFields;
-        _.each(fieldNodes, function (node, name) {
+        for (const [name, node] of Object.entries(fieldNodes)) {
             var field = fields[name];
             if (field.type === "many2one" || field.type === "many2many") {
                 var canCreate = node.getAttribute('can_create');
@@ -416,7 +416,7 @@ var MockServer = Class.extend({
             if (field.type === "one2many" || field.type === "many2many") {
                 relModel = field.relation;
                 relatedModels.add(relModel);
-                _.each(node.childNodes, function (childNode) {
+                node.childNodes.forEach((childNode) => {
                     if (childNode.tagName) { // skip text nodes
                         relFields = $.extend(true, {}, self.data[relModel].fields);
                         // this is hackhish, but _getView modifies the subview document in place,
@@ -432,8 +432,8 @@ var MockServer = Class.extend({
             if (name in onchanges) {
                 node.setAttribute('on_change', "1");
             }
-        });
-        _.each(groupbyNodes, function (node, name) {
+        }
+        for (const [name, node] of Object.entries(groupbyNodes)) {
             var field = fields[name];
             if (field.type !== 'many2one') {
                 throw new Error('groupby can only target many2one');
@@ -446,7 +446,7 @@ var MockServer = Class.extend({
             // postprocess simulation
             const { models } = self._getView(node, relModel, relFields, context);
             [...models].forEach((modelName) => relatedModels.add(modelName));
-        });
+        }
 
         var xmlSerializer = new XMLSerializer();
         var processedArch = xmlSerializer.serializeToString(doc);
@@ -480,7 +480,7 @@ var MockServer = Class.extend({
         if (active_test && 'active' in this.data[model].fields) {
             // add ['active', '=', true] to the domain if 'active' is not yet present in domain
             var activeInDomain = false;
-            _.each(domain, function (subdomain) {
+            domain.forEach((subdomain) => {
                 activeInDomain = activeInDomain || subdomain[0] === 'active';
             });
             if (!activeInDomain) {
@@ -497,7 +497,7 @@ var MockServer = Class.extend({
                     var childIDs = [criterion[2]];
                     while (childIDs.length > oldLength) {
                         oldLength = childIDs.length;
-                        _.each(records, function (r) {
+                        records.forEach((r) => {
                             if (childIDs.indexOf(r.parent_id) >= 0) {
                                 childIDs.push(r.id);
                             }
@@ -1205,7 +1205,7 @@ var MockServer = Class.extend({
     _mockGetViews: function (model, kwargs) {
         var self = this;
         var views = {};
-        _.each(kwargs.views, function (view_descr) {
+        kwargs.views.forEach((view_descr) => {
             var viewID = view_descr[0] || false;
             var viewType = view_descr[1];
             if (!viewID) {
@@ -1443,7 +1443,7 @@ var MockServer = Class.extend({
         var self = this;
         var fields = this.data[model].fields;
         var aggregatedFields = [];
-        _.each(kwargs.fields, function (field) {
+        kwargs.fields.forEach((field) => {
             var split = field.split(":");
             var fieldName = split[0];
             if (kwargs.groupby.indexOf(fieldName) > 0) {
@@ -1700,7 +1700,7 @@ var MockServer = Class.extend({
         var records = this._getRecords(model, domain || []);
 
         var data = {};
-        _.each(records, function (record) {
+        records.forEach((record) => {
             var groupByValue = record[groupBy]; // always technical value here
 
             // special case for bool values: rpc call response with capitalized strings
@@ -1714,7 +1714,7 @@ var MockServer = Class.extend({
 
             if (!(groupByValue in data)) {
                 data[groupByValue] = {};
-                _.each(progress_bar.colors, function (val, key) {
+                Object.keys(progress_bar.colors).forEach((key) => {
                     data[groupByValue][key] = 0;
                 });
             }
@@ -1836,7 +1836,7 @@ var MockServer = Class.extend({
         records = records.slice(offset, args.limit ? (offset + args.limit) : nbRecords);
         var processedRecords = _.map(records, function (r) {
             var result = {};
-            _.each(_.uniq(fields.concat(['id'])), function (fieldName) {
+            _.uniq(fields.concat(['id'])).forEach((fieldName) => {
                 var field = self.data[args.model].fields[fieldName];
                 if (field.type === 'many2one') {
                     var related_record = _.findWhere(self.data[field.relation].records, {
@@ -1872,12 +1872,12 @@ var MockServer = Class.extend({
         this.data[model].records = this.data[model].records.filter(record => !_.contains(ids, record.id));
 
         // update value of relationnal fields pointing to the deleted records
-        _.each(this.data, function (d) {
+        Object.values(this.data).forEach((d) => {
             var relatedFields = _.pick(d.fields, function (field) {
                 return field.relation === model;
             });
-            _.each(Object.keys(relatedFields), function (relatedField) {
-                _.each(d.records, function (record) {
+            Object.keys(relatedFields).forEach((relatedField) => {
+                d.records.forEach((record) => {
                     if (Array.isArray(record[relatedField])) {
                         record[relatedField] = _.difference(record[relatedField], ids);
                     } else if (ids.includes(record[relatedField])) {
@@ -1943,7 +1943,7 @@ var MockServer = Class.extend({
      * @returns {boolean} currently, always return 'true'
      */
     _mockWrite: function (model, args) {
-        _.each(args[0], id => {
+        args[0].forEach((id) => {
             const originalRecord = this._mockSearchRead(model, [[['id', '=', id]]], {})[0];
             this._writeRecord(model, args[1], id);
             const updatedRecord = this.data[model].records.find(record => record.id === id);
@@ -2115,7 +2115,9 @@ var MockServer = Class.extend({
     _traverse: function (tree, f) {
         var self = this;
         if (f(tree)) {
-            _.each(tree.childNodes, function (c) { self._traverse(c, f); });
+            Object.values(tree.childNodes || {}).forEach((c) => {
+                self._traverse(c, f);
+            });
         }
     },
     /**
diff --git a/addons/web/static/tests/legacy/helpers/test_utils_mock.js b/addons/web/static/tests/legacy/helpers/test_utils_mock.js
index 989ea17fc8b..b8756f6a5b3 100644
--- a/addons/web/static/tests/legacy/helpers/test_utils_mock.js
+++ b/addons/web/static/tests/legacy/helpers/test_utils_mock.js
@@ -632,7 +632,7 @@ function patch(target, props) {
         ownPatchedProps: [],
     };
     if (target.prototype) {
-        _.each(props, function (value, key) {
+        Object.keys(props).forEach((key) => {
             if (target.prototype.hasOwnProperty(key)) {
                 patches[patchID].ownPatchedProps.push({
                     key: key,
@@ -644,7 +644,7 @@ function patch(target, props) {
         });
         target.include(props);
     } else {
-        _.each(props, function (value, key) {
+        for (const [key, value] of Object.entries(props)) {
             if (key in target) {
                 var oldValue = target[key];
                 patches[patchID].ownPatchedProps.push({
@@ -670,7 +670,7 @@ function patch(target, props) {
                 patches[patchID].otherPatchedProps.push(key);
                 target[key] = value;
             }
-        });
+        }
     }
 }
 
@@ -683,17 +683,17 @@ function unpatch(target) {
     var patchID = target.__patchID;
     var patch = patches[patchID];
     if (target.prototype) {
-        _.each(patch.ownPatchedProps, function (p) {
+        patch.ownPatchedProps.forEach((p) => {
             target.prototype[p.key] = p.initialValue;
         });
-        _.each(patch.otherPatchedProps, function (key) {
+        patch.otherPatchedProps.forEach((key) => {
             delete target.prototype[key];
         });
     } else {
-        _.each(patch.ownPatchedProps, function (p) {
+        patch.ownPatchedProps.forEach((p) => {
             target[p.key] = p.initialValue;
         });
-        _.each(patch.otherPatchedProps, function (key) {
+        patch.otherPatchedProps.forEach((key) => {
             delete target[key];
         });
     }
diff --git a/addons/web_editor/static/src/js/common/ace.js b/addons/web_editor/static/src/js/common/ace.js
index 2065b5fdeee..ab1583929a7 100644
--- a/addons/web_editor/static/src/js/common/ace.js
+++ b/addons/web_editor/static/src/js/common/ace.js
@@ -524,11 +524,11 @@ var ViewEditor = Widget.extend({
             // Initialize a 0 level for each view and assign them an array containing their children.
             var self = this;
             var roots = [];
-            _.each(this.views, function (view) {
+            Object.values(this.views).forEach((view) => {
                 view.level = 0;
                 view.children = [];
             });
-            _.each(this.views, function (view) {
+            Object.values(this.views).forEach((view) => {
                 var parentId = view.inherit_id[0];
                 var parent = parentId && self.views[parentId];
                 if (parent) {
@@ -544,11 +544,11 @@ var ViewEditor = Widget.extend({
             function visit(view, level) {
                 view.level = level;
                 self.sortedViews.push(view);
-                _.each(view.children, function (child) {
+                view.children.forEach((child) => {
                     visit(child, level + 1);
                 });
             }
-            _.each(roots, function (root) {
+            roots.forEach((root) => {
                 visit(root, 0);
             });
         }
@@ -563,8 +563,10 @@ var ViewEditor = Widget.extend({
 
             // Store the URL ungrouped by bundle and use the URL as key (resource ID)
             var resources = type === 'scss' ? this.scss : this.js;
-            _.each(data, function (bundleInfos) {
-                _.each(bundleInfos[1], function (info) { info.bundle = bundleInfos[0]; });
+            data.forEach((bundleInfos) => {
+                bundleInfos[1].forEach((info) => {
+                    info.bundle = bundleInfos[0];
+                });
                 Object.assign(resources, _.indexBy(bundleInfos[1], 'url'));
             });
         }
@@ -629,41 +631,45 @@ var ViewEditor = Widget.extend({
         var self = this;
         var toSave = {};
         var errorFound = false;
-        _.each(this.editingSessions, (function (editingSessions, type) {
-            if (errorFound) return;
+        Object.entries(this.editingSessions || {}).forEach(
+            (([type, editingSessions]) => {
+                if (errorFound) return;
 
-            var dirtySessions = _.pick(editingSessions, function (session) {
-                return session.getUndoManager().hasUndo();
-            });
-            toSave[type] = _.map(dirtySessions, function (session, resID) {
-                return {
-                    id: parseInt(resID, 10) || resID,
-                    text: session.getValue(),
-                };
-            });
+                var dirtySessions = _.pick(editingSessions, function (session) {
+                    return session.getUndoManager().hasUndo();
+                });
+                toSave[type] = _.map(dirtySessions, function (session, resID) {
+                    return {
+                        id: parseInt(resID, 10) || resID,
+                        text: session.getValue(),
+                    };
+                });
 
-            this._showErrorLine();
-            for (var i = 0 ; i < toSave[type].length && !errorFound ; i++) {
-                var check = (type === 'xml' ? checkXML : checkSCSS)(toSave[type][i].text);
-                if (!check.isValid) {
-                    this._showErrorLine(check.error.line, check.error.message, toSave[type][i].id, type);
-                    errorFound = toSave[type][i];
+                this._showErrorLine();
+                for (var i = 0 ; i < toSave[type].length && !errorFound ; i++) {
+                    var check = (type === 'xml' ? checkXML : checkSCSS)(toSave[type][i].text);
+                    if (!check.isValid) {
+                        this._showErrorLine(check.error.line, check.error.message, toSave[type][i].id, type);
+                        errorFound = toSave[type][i];
+                    }
                 }
-            }
-        }).bind(this));
+            }).bind(this)
+        );
         if (errorFound) return Promise.reject(errorFound);
 
         var defs = [];
         var mutex = new concurrency.Mutex();
-        _.each(toSave, (function (_toSave, type) {
-            // Child views first as COW on a parent would delete them
-            _toSave = _.sortBy(_toSave, 'id').reverse();
-            _.each(_toSave, function (session) {
-                defs.push(mutex.exec(function () {
-                    return (type === 'xml' ? self._saveView(session) : self._saveSCSSorJS(session));
-                }));
-            });
-        }).bind(this));
+        Object.entries(toSave || {}).forEach(
+            (([type, _toSave]) => {
+                // Child views first as COW on a parent would delete them
+                _toSave = _.sortBy(_toSave, 'id').reverse();
+                _toSave.forEach((session) => {
+                    defs.push(mutex.exec(function () {
+                        return (type === 'xml' ? self._saveView(session) : self._saveSCSSorJS(session));
+                    }));
+                });
+            }).bind(this)
+        );
 
         var self = this;
         return Promise.all(defs).guardedCatch(function (results) {
@@ -811,7 +817,7 @@ var ViewEditor = Widget.extend({
     _switchType: function (type) {
         this.currentType = type;
         this.$typeSwitcherBtn.html(this.$typeSwitcherChoices.filter('[data-type=' + type + ']').html());
-        _.each(this.$lists, function ($list, _type) { $list.toggleClass('d-none', type !== _type); });
+        Object.entries(this.$lists).forEach(([_type, $list]) => { $list.toggleClass('d-none', type !== _type); });
         this.$lists[type].change();
 
         this.$includeBundlesArea.toggleClass('d-none', this.currentType !== 'xml' || !config.isDebug());
@@ -851,7 +857,7 @@ var ViewEditor = Widget.extend({
 
         var self = this;
         this.$lists.xml.empty();
-        _.each(this.sortedViews, function (view) {
+        this.sortedViews.forEach((view) => {
             self.$lists.xml.append($('<option/>', {
                 value: view.id,
                 text: view.name,
@@ -887,11 +893,11 @@ var ViewEditor = Widget.extend({
         this.$lists.js.data('select2').dropdown.addClass('o_ace_select2_dropdown');
 
         function _populateList(sortedData, $list, lettersToRemove) {
-            _.each(sortedData, function (bundleInfos) {
+            sortedData.forEach((bundleInfos) => {
                 var $optgroup = $('<optgroup/>', {
                     label: bundleInfos[0],
                 }).appendTo($list);
-                _.each(bundleInfos[1], function (dataInfo) {
+                bundleInfos[1].forEach((dataInfo) => {
                     var name = dataInfo.url.substring(dataInfo.url.lastIndexOf('/') + 1, dataInfo.url.length - lettersToRemove);
                     $optgroup.append($('<option/>', {
                         value: dataInfo.url,
diff --git a/addons/web_editor/static/src/js/editor/snippets.editor.js b/addons/web_editor/static/src/js/editor/snippets.editor.js
index c80c5dd48cf..677c76dce40 100644
--- a/addons/web_editor/static/src/js/editor/snippets.editor.js
+++ b/addons/web_editor/static/src/js/editor/snippets.editor.js
@@ -1539,7 +1539,7 @@ var SnippetEditor = Widget.extend({
         // propagated to parent editor
         if (ev.data.optionNames) {
             ev.stopPropagation();
-            _.each(ev.data.optionNames, function (name) {
+            ev.data.optionNames.forEach((name) => {
                 notifyForEachMatchedOption(name);
             });
         }
@@ -3037,7 +3037,7 @@ var SnippetsMenu = Widget.extend({
                     : $els => $els;
 
             var check = false;
-            _.each(self.templateOptions, function (option, k) {
+            self.templateOptions.forEach((option, k) => {
                 if (check || !($snippetBody.is(option.base_selector) && !$snippetBody.is(option.base_exclude))) {
                     return;
                 }
diff --git a/addons/web_editor/static/src/js/editor/snippets.options.js b/addons/web_editor/static/src/js/editor/snippets.options.js
index 7beae559547..bb6c400c5d6 100644
--- a/addons/web_editor/static/src/js/editor/snippets.options.js
+++ b/addons/web_editor/static/src/js/editor/snippets.options.js
@@ -4444,13 +4444,13 @@ registry.sizing = SnippetOptionWidget.extend({
                 let current = 0;
                 const cssProperty = resize[2];
                 const cssPropertyValue = parseInt(self.$target.css(cssProperty));
-                _.each(resize[0], function (val, key) {
+                for (const [key, val] of Object.entries(resize[0])) {
                     if (self.$target.hasClass(val)) {
                         current = key;
                     } else if (resize[1][key] === cssPropertyValue) {
                         current = key;
                     }
-                });
+                }
 
                 props.resize = resize;
                 props.current = current;
@@ -4551,9 +4551,9 @@ registry.sizing = SnippetOptionWidget.extend({
             $body.on('mouseup', bodyMouseUp);
         });
 
-        _.each(resizeValues, (value, key) => {
+        for (const [key, value] of Object.entries(resizeValues)) {
             this.$handles.filter('.' + key).toggleClass('readonly', !value);
-        });
+        }
         if (this.$target[0].classList.contains('o_grid_item')) {
             this.$handles.filter('.o_grid_handle').toggleClass('readonly', false);
         }
@@ -4661,7 +4661,7 @@ registry.sizing = SnippetOptionWidget.extend({
         // Adapt the resize handles according to the classes and dimensions
         var resizeValues = this._getSize();
         var $handles = this.$overlay.find('.o_handle');
-        _.each(resizeValues, function (resizeValue, direction) {
+        for (const [direction, resizeValue] of Object.entries(resizeValues)) {
             var classes = resizeValue[0];
             var values = resizeValue[1];
             var cssProperty = resizeValue[2];
@@ -4670,7 +4670,7 @@ registry.sizing = SnippetOptionWidget.extend({
 
             var current = 0;
             var cssPropertyValue = parseInt(self.$target.css(cssProperty));
-            _.each(classes, function (className, key) {
+            classes.forEach((className, key) => {
                 if (self.$target.hasClass(className)) {
                     current = key;
                 } else if (values[key] === cssPropertyValue) {
@@ -4680,7 +4680,7 @@ registry.sizing = SnippetOptionWidget.extend({
 
             $handle.toggleClass('o_handle_start', current === 0);
             $handle.toggleClass('o_handle_end', current === classes.length - 1);
-        });
+        }
 
         // Adapt the handles to fit the left, top and bottom sizes
         var ml = this.$target.css('margin-left');
@@ -4691,7 +4691,7 @@ registry.sizing = SnippetOptionWidget.extend({
         this.$overlay.find('.o_handle.e').css({
             width: 0,
         });
-        _.each(this.$overlay.find(".o_handle.n, .o_handle.s"), function (handle) {
+        this.$overlay.find(".o_handle.n, .o_handle.s").toArray().forEach((handle) => {
             var $handle = $(handle);
             var direction = $handle.hasClass('n') ? 'top' : 'bottom';
             $handle.height(self.$target.css('padding-' + direction));
@@ -5288,7 +5288,7 @@ registry.layout_column = SnippetOptionWidget.extend({
         var colSize = Math.floor(12 / colsLength) || 1;
         var colOffset = Math.floor((12 - colSize * colsLength) / 2);
         var colClass = 'col-lg-' + colSize;
-        _.each($columns, function (column) {
+        $columns.toArray().forEach((column) => {
             var $column = $(column);
             $column.attr('class', $column.attr('class').replace(/\b(col|offset)-lg(-\d+)?\b/g, ''));
             $column.addClass(colClass);
diff --git a/addons/web_editor/static/src/js/wysiwyg/fonts.js b/addons/web_editor/static/src/js/wysiwyg/fonts.js
index e40e9fb3669..858f71887c9 100644
--- a/addons/web_editor/static/src/js/wysiwyg/fonts.js
+++ b/addons/web_editor/static/src/js/wysiwyg/fonts.js
@@ -88,7 +88,7 @@ export default {
      */
     computeFonts: _.once(function () {
         var self = this;
-        _.each(this.fontIcons, function (data) {
+        this.fontIcons.forEach((data) => {
             data.cssData = self.getCssSelectors(data.parser);
             data.alias = _.flatten(_.map(data.cssData, _.property('names')));
         });
diff --git a/addons/web_editor/static/src/js/wysiwyg/widgets/color_palette.js b/addons/web_editor/static/src/js/wysiwyg/widgets/color_palette.js
index 1c17858fe9f..cc14b027e1f 100644
--- a/addons/web_editor/static/src/js/wysiwyg/widgets/color_palette.js
+++ b/addons/web_editor/static/src/js/wysiwyg/widgets/color_palette.js
@@ -121,11 +121,11 @@ const ColorPaletteWidget = Widget.extend({
         colorpickerEl.querySelectorAll('button').forEach(el => el.classList.add('o_we_color_btn'));
 
         // Populate tabs based on the tabs configuration indicated in this.tabs
-        _.each(this.tabs, (tab, index) => {
+        this.tabs.forEach((tab, index) => {
             // Append pickers to section
             const sectionEl = this.el.querySelector(`.o_colorpicker_sections[data-color-tab="${tab.id}"]`);
             let sectionIsEmpty = true;
-            _.each(tab.pickers, pickerId => {
+            tab.pickers.forEach((pickerId) => {
                 let pickerEl;
                 switch (pickerId) {
                     case 'common_grays':
@@ -215,7 +215,7 @@ const ColorPaletteWidget = Widget.extend({
 
         // Remove excluded palettes (note: only hide them to still be able
         // to remove their related colors on the DOM target)
-        _.each(this.options.excluded, exc => {
+        this.options.excluded.forEach((exc) => {
             this.$('[data-name="' + exc + '"]').addClass('d-none');
         });
         if (this.options.excludeSectionOf) {
@@ -367,7 +367,7 @@ const ColorPaletteWidget = Widget.extend({
                 this._addCustomColor(existingColors, color);
             }
         });
-        _.each(this.options.$editable.find('[style*="color"]'), el => {
+        this.options.$editable.find('[style*="color"]').toArray().forEach((el) => {
             for (const colorProp of ['color', 'backgroundColor']) {
                 this._addCustomColor(existingColors, el.style[colorProp]);
             }
diff --git a/addons/web_editor/static/tests/test_utils.js b/addons/web_editor/static/tests/test_utils.js
index f98b3586f7d..6d809c86d64 100644
--- a/addons/web_editor/static/tests/test_utils.js
+++ b/addons/web_editor/static/tests/test_utils.js
@@ -357,7 +357,7 @@ var keyboardMap = {
     "91": "OS_KEY", // 'left command': Windows Key (Windows) or Command Key (Mac)
     "93": "CONTEXT_MENU", // 'right command'
 };
-_.each(range(40, 127), function (keyCode) {
+range(40, 127).forEach((keyCode) => {
     if (!keyboardMap[keyCode]) {
         keyboardMap[keyCode] = String.fromCharCode(keyCode);
     }
diff --git a/addons/website/static/src/components/translator/translator.js b/addons/website/static/src/components/translator/translator.js
index e1a0764fd1a..873319afe59 100644
--- a/addons/website/static/src/components/translator/translator.js
+++ b/addons/website/static/src/components/translator/translator.js
@@ -17,7 +17,7 @@ export class AttributeTranslateDialog extends Component {
         useEffect(() => {
             this.translation = $(this.props.node).data('translation');
             const $group = $('<div/>', {class: 'mb-3'}).appendTo(this.formEl.el);
-            _.each(this.translation, function (node, attr) {
+            for (const [attr, node] of Object.entries(this.translation)) {
                 const $node = $(node);
                 const $label = $('<label class="col-form-label"></label>').text(attr);
                 const $input = $('<input class="form-control"/>').val($node.html());
@@ -38,7 +38,7 @@ export class AttributeTranslateDialog extends Component {
                     $node.trigger('change');
                 });
                 $group.append($label).append($input);
-            });
+            }
         }, () => [this.props.node]);
     }
 }
@@ -132,7 +132,7 @@ export class WebsiteTranslator extends WebsiteEditorComponent {
         const $editable = this.getEditableArea();
         const translationRegex = /<span [^>]*data-oe-translation-initial-sha="([^"]+)"[^>]*>(.*)<\/span>/;
         let $edited = $();
-        _.each(attrs, function (attr) {
+        attrs.forEach((attr) => {
             const attrEdit = $editable.filter('[' + attr + '*="data-oe-translation-initial-sha="]').filter(':empty, input, select, textarea, img');
             attrEdit.each(function () {
                 var $node = $(this);
@@ -269,7 +269,7 @@ export class WebsiteTranslator extends WebsiteEditorComponent {
         this.$translations.each(function () {
             var $node = $(this);
             var translation = $node.data('translation');
-            _.each(translation, function (node, attr) {
+            Object.values(translation).forEach((node) => {
                 var trans = self.getTranslationObject(node);
                 trans.value = (trans.value ? trans.value : $node.html()).replace(/[ \t\n\r]+/, ' ');
                 $node.attr('data-oe-translation-state', (trans.state || 'to_translate'));
diff --git a/addons/website/static/src/js/backend/dashboard.js b/addons/website/static/src/js/backend/dashboard.js
index ce1f42c870c..7cb0641ccff 100644
--- a/addons/website/static/src/js/backend/dashboard.js
+++ b/addons/website/static/src/js/backend/dashboard.js
@@ -109,7 +109,7 @@ var Dashboard = AbstractAction.extend({
 
     render_dashboards: function() {
         var self = this;
-        _.each(this.dashboards_templates, function(template) {
+        this.dashboards_templates.forEach((template) => {
             self.$('.o_website_dashboard').append(QWeb.render(template, {widget: self}));
         });
     },
@@ -205,7 +205,7 @@ var Dashboard = AbstractAction.extend({
     render_graphs: function() {
         var self = this;
         if (this._isInDom) {
-            _.each(this.graphs, function(e) {
+            this.graphs.forEach((e) => {
                 var renderGraph = self.groups[e.group] &&
                                     self.dashboards_data[e.name].summary.order_count;
                 if (!self.chartIds[e.name]) {
diff --git a/addons/website/static/src/js/content/snippets.animation.js b/addons/website/static/src/js/content/snippets.animation.js
index 96dc2d9c84e..2a54e5f21ce 100644
--- a/addons/website/static/src/js/content/snippets.animation.js
+++ b/addons/website/static/src/js/content/snippets.animation.js
@@ -165,10 +165,10 @@ var AnimationEffect = Class.extend(mixins.ParentedMixin, {
         }
 
         function _processEvents(events, namespace) {
-            events = events.split(' ');
-            return _.each(events, function (e, index) {
-                events[index] += ('.' + namespace);
-            }).join(' ');
+            return events
+                .split(" ")
+                .map((e) => (e += "." + namespace))
+                .join(" ");
         }
     },
     /**
@@ -375,7 +375,7 @@ var Animation = publicWidget.Widget.extend({
      */
     start: function () {
         this._prepareEffects();
-        _.each(this._animationEffects, function (effect) {
+        this._animationEffects.forEach((effect) => {
             effect.start();
         });
         return this._super.apply(this, arguments);
@@ -397,7 +397,7 @@ var Animation = publicWidget.Widget.extend({
         this._animationEffects = [];
 
         var self = this;
-        _.each(this.effects, function (desc) {
+        this.effects.forEach((desc) => {
             self._addEffect(self[desc.update], desc.startEvents, _findTarget(desc.startTarget), {
                 getStateCallback: desc.getState && self[desc.getState],
                 endEvents: desc.endEvents || undefined,
@@ -462,9 +462,11 @@ registry.slider = publicWidget.Widget.extend({
         this.$('img').off('.slider');
         this.$el.carousel('pause');
         this.$el.removeData('bs.carousel');
-        _.each(this.$('.carousel-item'), function (el) {
-            $(el).css('min-height', '');
-        });
+        this.$(".carousel-item")
+            .toArray()
+            .forEach((el) => {
+                $(el).css("min-height", "");
+            });
         $(window).off('.slider');
     },
 
@@ -479,7 +481,7 @@ registry.slider = publicWidget.Widget.extend({
         var maxHeight = 0;
         var $items = this.$('.carousel-item');
         $items.css('min-height', '');
-        _.each($items, el => {
+        $items.toArray().forEach((el) => {
             var $item = $(el);
             var isActive = $item.hasClass('active');
             this.options.wysiwyg && this.options.wysiwyg.odooEditor.observerUnactive('_computeHeights');
@@ -1265,7 +1267,7 @@ registry.WebsiteAnimate = publicWidget.Widget.extend({
 
         // By default, elements are hidden by the css of o_animate.
         // Render elements and trigger the animation then pause it in state 0.
-        _.each(this.$animatedElements, el => {
+        this.$animatedElements.toArray().forEach((el) => {
             if (el.closest('.dropdown')) {
                 el.classList.add('o_animate_in_dropdown');
                 return;
@@ -1389,7 +1391,7 @@ registry.WebsiteAnimate = publicWidget.Widget.extend({
      * @param {Element} el
      */
     _scrollWebsiteAnimate(el) {
-        _.each(this.$('.o_animate:not(.o_animate_in_dropdown)'), el => {
+        this.$('.o_animate:not(.o_animate_in_dropdown)').toArray().forEach((el) => {
             const $el = $(el);
             const elHeight = el.offsetHeight;
             const animateOnScroll = el.classList.contains('o_animate_on_scroll');
diff --git a/addons/website/static/src/js/editor/snippets.options.js b/addons/website/static/src/js/editor/snippets.options.js
index 3b659de8672..a29494515d2 100644
--- a/addons/website/static/src/js/editor/snippets.options.js
+++ b/addons/website/static/src/js/editor/snippets.options.js
@@ -305,7 +305,7 @@ const FontFamilyPickerUserValueWidget = SelectUserValueWidget.extend({
 
         // Adapt font variable indexes to the removal
         const style = window.getComputedStyle(this.$target[0].ownerDocument.documentElement);
-        _.each(FontFamilyPickerUserValueWidget.prototype.fontVariables, variable => {
+        FontFamilyPickerUserValueWidget.prototype.fontVariables.forEach((variable) => {
             const value = weUtils.getCSSVariableValue(variable, style);
             if (value.substring(1, value.length - 1) === googleFontName) {
                 // If an element is using the google font being removed, reset
@@ -1755,7 +1755,7 @@ options.registry.Carousel = options.Class.extend({
         const id = 'myCarousel' + Date.now();
         this.$target.attr('id', id);
         this.$target.find('[data-bs-target]').attr('data-bs-target', '#' + id);
-        _.each(this.$target.find('[data-bs-slide], [data-bs-slide-to]'), function (el) {
+        this.$target.find('[data-bs-slide], [data-bs-slide-to]').toArray().forEach((el) => {
             var $el = $(el);
             if ($el.attr('data-bs-target')) {
                 $el.attr('data-bs-target', '#' + id);
diff --git a/addons/website/static/src/snippets/s_facebook_page/options.js b/addons/website/static/src/snippets/s_facebook_page/options.js
index 259617b244c..beae6e31734 100644
--- a/addons/website/static/src/snippets/s_facebook_page/options.js
+++ b/addons/website/static/src/snippets/s_facebook_page/options.js
@@ -103,9 +103,9 @@ options.registry.facebookPage = options.Class.extend({
             } else {
                 this.fbData.height = 150;
             }
-            _.each(this.fbData, (value, key) => {
+            for (const [key, value] of Object.entries(this.fbData)) {
                 this.$target[0].dataset[key] = value;
-            });
+            }
         });
     },
     /**
diff --git a/addons/website/static/src/snippets/s_image_gallery/options.js b/addons/website/static/src/snippets/s_image_gallery/options.js
index 935011abe04..ecf0fac1325 100644
--- a/addons/website/static/src/snippets/s_image_gallery/options.js
+++ b/addons/website/static/src/snippets/s_image_gallery/options.js
@@ -163,7 +163,7 @@ options.registry.gallery = options.Class.extend({
         var colClass = 'col-lg-' + (12 / columns);
         var $container = this._replaceContent($row);
 
-        _.each(imgs, function (img, index) {
+        imgs.forEach((img, index) => {
             var $img = $(img);
             var $col = $('<div/>', {class: colClass});
             $col.append($img).appendTo($row);
@@ -199,7 +199,7 @@ options.registry.gallery = options.Class.extend({
         while (imgs.length) {
             var min = Infinity;
             var $lowest;
-            _.each(cols, function (col) {
+            cols.forEach((col) => {
                 var $col = $(col);
                 var height = $col.is(':empty') ? 0 : $col.find('img').last().offset().top + $col.find('img').last().height() - self.$target.offset().top;
                 if (height < min) {
@@ -244,7 +244,7 @@ options.registry.gallery = options.Class.extend({
 
         this._replaceContent($row);
 
-        _.each(imgs, function (img) {
+        imgs.forEach((img) => {
             var wrapClass = 'col-lg-3';
             if (img.width >= img.height * 2 || img.width > 600) {
                 wrapClass = 'col-lg-6';
@@ -296,7 +296,7 @@ options.registry.gallery = options.Class.extend({
         },
         $slideshow = $(qweb.render('website.gallery.slideshow', params));
         this._replaceContent($slideshow);
-        _.each(this.$('img'), function (img, index) {
+        this.$("img").toArray().forEach((img, index) => {
             $(img).attr({contenteditable: true, 'data-index': index});
         });
         this.$target.css('height', Math.round(window.innerHeight * 0.7));
@@ -339,7 +339,7 @@ options.registry.gallery = options.Class.extend({
                     break;
             }
             position = imgs.indexOf(data.$image[0]);
-            _.each(imgs, function (img, index) {
+            imgs.forEach((img, index) => {
                 // Note: there might be more efficient ways to do that but it is
                 // more simple this way and allows compatibility with 10.0 where
                 // indexes were not the same as positions.
@@ -377,7 +377,7 @@ options.registry.gallery = options.Class.extend({
     _adaptNavigationIDs: function () {
         var uuid = new Date().getTime();
         this.$target.find('.carousel').attr('id', 'slideshow_' + uuid);
-        _.each(this.$target.find('[data-bs-slide], [data-bs-slide-to]'), function (el) {
+        this.$target.find('[data-bs-slide], [data-bs-slide-to]').toArray().forEach((el) => {
             var $el = $(el);
             if ($el.attr('data-bs-target')) {
                 $el.attr('data-bs-target', '#slideshow_' + uuid);
diff --git a/addons/website/static/src/snippets/s_product_catalog/options.js b/addons/website/static/src/snippets/s_product_catalog/options.js
index 80c37165f57..599b0671f2b 100644
--- a/addons/website/static/src/snippets/s_product_catalog/options.js
+++ b/addons/website/static/src/snippets/s_product_catalog/options.js
@@ -21,7 +21,7 @@ options.registry.ProductCatalog = options.Class.extend({
         const $name = $dishes.find('.s_product_catalog_dish_name');
         $name.toggleClass('s_product_catalog_dish_dot_leaders', !widgetValue);
         if (widgetValue) {
-            _.each($dishes, el => {
+            $dishes.toArray().forEach((el) => {
                 const $description = $(el).find('.s_product_catalog_dish_description');
                 if ($description.length) {
                     $description.removeClass('d-none');
@@ -35,7 +35,7 @@ options.registry.ProductCatalog = options.Class.extend({
                 }
             });
         } else {
-            _.each($dishes, el => {
+            $dishes.toArray().forEach((el) => {
                 const $description = $(el).find('.s_product_catalog_dish_description');
                 if ($description.hasClass('o_default_snippet_text') || $description.find('.o_default_snippet_text').length) {
                     $description.remove();
diff --git a/addons/website/static/src/snippets/s_table_of_content/000.js b/addons/website/static/src/snippets/s_table_of_content/000.js
index 23327599a8f..8f3f2233d76 100644
--- a/addons/website/static/src/snippets/s_table_of_content/000.js
+++ b/addons/website/static/src/snippets/s_table_of_content/000.js
@@ -61,7 +61,7 @@ const TableOfContent = publicWidget.Widget.extend({
         }
         let position = 0;
         const $fixedElements = $('.o_top_fixed_element');
-        _.each($fixedElements, el => position += $(el).outerHeight());
+        $fixedElements.toArray().forEach((el) => position += $(el).outerHeight());
         const isHorizontalNavbar = this.$el.hasClass('s_table_of_content_horizontal_navbar');
         this.$el.css('top', isHorizontalNavbar ? position : '');
         this.$el.find('.s_table_of_content_navbar').css('top', isHorizontalNavbar ? '' : position + 20);
diff --git a/addons/website/static/src/snippets/s_table_of_content/options.js b/addons/website/static/src/snippets/s_table_of_content/options.js
index 26cd941acc7..d7dba2926d5 100644
--- a/addons/website/static/src/snippets/s_table_of_content/options.js
+++ b/addons/website/static/src/snippets/s_table_of_content/options.js
@@ -97,7 +97,7 @@ options.registry.TableOfContent = options.Class.extend({
         this._disposeScrollSpy();
         const $nav = this.$target.find('.s_table_of_content_navbar');
         $nav.empty();
-        _.each(headingsEls, el => {
+        headingsEls.forEach((el) => {
             const $el = $(el);
             const id = 'table_of_content_heading_' + _.now() + '_' + _.uniqueId();
             $('<a>').attr('href', "#" + id)
diff --git a/addons/website/static/src/snippets/s_website_form/000.js b/addons/website/static/src/snippets/s_website_form/000.js
index dfa18b75bc8..76e30162fc5 100644
--- a/addons/website/static/src/snippets/s_website_form/000.js
+++ b/addons/website/static/src/snippets/s_website_form/000.js
@@ -285,7 +285,7 @@ import { sprintf } from "@web/core/utils/strings";
             // Serialize form inputs into a single object
             // Aggregate multiple values into arrays
             var form_values = {};
-            _.each(this.form_fields, function (input) {
+            this.form_fields.forEach((input) => {
                 if (input.name in form_values) {
                     // If a value already exists for this field,
                     // we are facing a x2many field, so we store
diff --git a/addons/website/static/src/snippets/s_website_form/options.js b/addons/website/static/src/snippets/s_website_form/options.js
index 702cef32461..b007ca91c74 100644
--- a/addons/website/static/src/snippets/s_website_form/options.js
+++ b/addons/website/static/src/snippets/s_website_form/options.js
@@ -818,11 +818,13 @@ options.registry.WebsiteFieldEditor = FieldEditor.extend({
             authorizedFieldsCache[model] = getFields;
         }
 
-        this.existingFields = await getFields.then(fields => {
-            this.fields = _.each(fields, function (field, fieldName) {
+        this.existingFields = await getFields.then((fields) => {
+            this.fields = {};
+            for (const [fieldName, field] of Object.entries(fields)) {
                 field.name = fieldName;
                 field.domain = field.domain || [];
-            });
+                this.fields[fieldName] = field;
+            }
             // Create the buttons for the type we-select
             return Object.keys(fields).map(key => {
                 const field = fields[key];
diff --git a/addons/website_event_track/static/src/js/website_event_track_proposal_form_tags.js b/addons/website_event_track/static/src/js/website_event_track_proposal_form_tags.js
index 1fa37b1365a..d590e013c9d 100644
--- a/addons/website_event_track/static/src/js/website_event_track_proposal_form_tags.js
+++ b/addons/website_event_track/static/src/js/website_event_track_proposal_form_tags.js
@@ -64,7 +64,7 @@ publicWidget.registry.websiteEventTrackProposalFormTags = publicWidget.Widget.ex
             fill_data: function (query, data) {
                 var that = this,
                     tags = {results: []};
-                _.each(data, function (obj) {
+                data.forEach((obj) => {
                     // select tags matching either category or tag name
                     if (that.matcher(query.term, obj[nameKey]) || that.matcher(query.term, obj.category_id[1])) {
                         if (obj.category_id[1]) {
diff --git a/addons/website_forum/static/src/js/website_forum.js b/addons/website_forum/static/src/js/website_forum.js
index 486075c874a..e2447d4a416 100644
--- a/addons/website_forum/static/src/js/website_forum.js
+++ b/addons/website_forum/static/src/js/website_forum.js
@@ -93,7 +93,7 @@ publicWidget.registry.websiteForum = publicWidget.Widget.extend({
                 },
                 results: function (data) {
                     var ret = [];
-                    _.each(data, function (x) {
+                    data.forEach((x) => {
                         ret.push({
                             id: x.id,
                             text: x.name,
@@ -107,7 +107,7 @@ publicWidget.registry.websiteForum = publicWidget.Widget.extend({
             // Take default tags from the input value
             initSelection: function (element, callback) {
                 var data = [];
-                _.each(element.data('init-value'), function (x) {
+                element.data("init-value").forEach((x) => {
                     data.push({id: x.id, text: x.name, isNew: false});
                 });
                 element.val('');
@@ -115,7 +115,7 @@ publicWidget.registry.websiteForum = publicWidget.Widget.extend({
             },
         });
 
-        _.each($('textarea.o_wysiwyg_loader'), function (textarea) {
+        $('textarea.o_wysiwyg_loader').toArray().forEach((textarea) => {
             var $textarea = $(textarea);
             var editorKarma = $textarea.data('karma') || 0; // default value for backward compatibility
             var $form = $textarea.closest('form');
@@ -146,7 +146,7 @@ publicWidget.registry.websiteForum = publicWidget.Widget.extend({
             });
         });
 
-        _.each(this.$('.o_wforum_bio_popover'), authorBox => {
+        this.$('.o_wforum_bio_popover').toArray().forEach((authorBox) => {
             $(authorBox).popover({
                 trigger: 'hover',
                 offset: '10',
@@ -216,7 +216,7 @@ publicWidget.registry.websiteForum = publicWidget.Widget.extend({
             ev.preventDefault();
             setTimeout(function() {
                 var $buttons = $(ev.currentTarget).find('button[type="submit"], a.a-submit');
-                _.each($buttons, function (btn) {
+                $buttons.toArray().forEach((btn) => {
                     let $btn = $(btn);
                     $btn.find('i').remove();
                     $btn.prop('disabled', false);
@@ -443,7 +443,7 @@ publicWidget.registry.websiteForum = publicWidget.Widget.extend({
                     type: "warning",
                 });
             } else {
-                _.each(this.$('.forum_answer'), answer => {
+                this.$('.forum_answer').toArray().forEach((answer) => {
                     var $answer = $(answer);
                     var isCorrect = $answer.is(target) ? data : false;
                     var $toggler = $answer.find('.o_wforum_validate_toggler');
@@ -600,7 +600,7 @@ publicWidget.registry.websiteForumSpam = publicWidget.Widget.extend({
             ],
             kwargs: {}
         }).then(function (o) {
-            _.each(o, function (r) {
+            Object.values(o).forEach((r) => {
                 r.content = $('<p>' + $(r.content).html() + '</p>').text().substring(0, 250);
             });
             self.$('div.post_spam').html(qweb.render('website_forum.spam_search_name', {
diff --git a/addons/website_links/static/src/js/website_links.js b/addons/website_links/static/src/js/website_links.js
index 729dcf7b94f..e349a5475ee 100644
--- a/addons/website_links/static/src/js/website_links.js
+++ b/addons/website_links/static/src/js/website_links.js
@@ -301,7 +301,7 @@ var RecentLinks = publicWidget.Widget.extend({
                 limit: 20,
             },
         }).then(function (result) {
-            _.each(result.reverse(), function (link) {
+            result.reverse().forEach((link) => {
                 self._addLink(link);
             });
             self._updateNotification();
diff --git a/addons/website_payment/static/src/snippets/s_donation/000.js b/addons/website_payment/static/src/snippets/s_donation/000.js
index 44069ac9e25..27d99a84433 100644
--- a/addons/website_payment/static/src/snippets/s_donation/000.js
+++ b/addons/website_payment/static/src/snippets/s_donation/000.js
@@ -74,7 +74,7 @@ publicWidget.registry.DonationSnippet = publicWidget.Widget.extend({
             this.currency = result;
             this.$('.s_donation_currency').remove();
             const $prefilledButtons = this.$('.s_donation_btn, .s_range_bubble');
-            _.each($prefilledButtons, button => {
+            $prefilledButtons.toArray().forEach((button) => {
                 const before = result.position === "before";
                 const $currencySymbol = document.createElement('span');
                 $currencySymbol.innerText = result.symbol;
diff --git a/addons/website_payment/static/src/snippets/s_donation/options.js b/addons/website_payment/static/src/snippets/s_donation/options.js
index ae6cef0d537..280e98e2142 100644
--- a/addons/website_payment/static/src/snippets/s_donation/options.js
+++ b/addons/website_payment/static/src/snippets/s_donation/options.js
@@ -97,7 +97,7 @@ options.registry.Donation = options.Class.extend({
         const valueList = JSON.parse(value);
         const donationAmounts = [];
         delete this.$target[0].dataset.donationAmounts;
-        _.each(valueList, value => {
+        valueList.forEach((value) => {
             donationAmounts.push(value.display_name);
         });
         this.$target[0].dataset.donationAmounts = JSON.stringify(donationAmounts);
@@ -233,7 +233,7 @@ options.registry.Donation = options.Class.extend({
         if (this.$target[0].dataset.descriptions) {
             const $descriptions = this.$target.find('#s_donation_description_inputs > input');
             const $tableEl = this.$el.find('we-list table');
-            _.each($tableEl.find('tr'), (trEl, i) => {
+            $tableEl.find("tr").toArray().forEach((trEl, i) => {
                 const $inputAmount = $(trEl).find('td').first();
                 $inputAmount.addClass('w-25');
                 const tdEl = document.createElement('td');
@@ -256,7 +256,7 @@ options.registry.Donation = options.Class.extend({
         const descriptionInputs = this.$target.find('#s_donation_description_inputs');
         descriptionInputs.empty();
         const descriptions = this.$el.find('we-list input[type=text]');
-        _.each(descriptions, description => {
+        descriptions.toArray().forEach((description) => {
             const inputEl = document.createElement('input');
             inputEl.type = 'hidden';
             inputEl.classList.add('o_translatable_input_hidden', 'd-block', 'mb-1', 'w-100');
diff --git a/addons/website_sale/static/src/js/website_sale.editor.js b/addons/website_sale/static/src/js/website_sale.editor.js
index d16ef7ada6c..ae8f6cff0fa 100644
--- a/addons/website_sale/static/src/js/website_sale.editor.js
+++ b/addons/website_sale/static/src/js/website_sale.editor.js
@@ -760,9 +760,12 @@ options.registry.WebsiteSaleProductPage = options.Class.extend({
             'input.js_variant_change:checked',
             'select.js_variant_change'
         ];
-        _.each($container.find(variantsValuesSelectors.join(', ')), function (el) {
-            values.push(+$(el).val());
-        });
+        $container
+            .find(variantsValuesSelectors.join(", "))
+            .toArray()
+            .forEach((el) => {
+                values.push(+$(el).val());
+            });
 
         return values;
     },
diff --git a/addons/website_sale/static/src/js/website_sale.js b/addons/website_sale/static/src/js/website_sale.js
index 9ca64ade91f..6659c0dae0b 100644
--- a/addons/website_sale/static/src/js/website_sale.js
+++ b/addons/website_sale/static/src/js/website_sale.js
@@ -69,7 +69,9 @@ publicWidget.registry.WebsiteSale = publicWidget.Widget.extend(VariantMixin, car
 
         this._applyHashFromSearch();
 
-        _.each(this.$('div.js_product'), function (product) {
+        this.$("div.js_product")
+            .toArray()
+            .forEach((product) => {
             $('input.js_product_change', product).first().trigger('change');
         });
 
@@ -159,7 +161,7 @@ publicWidget.registry.WebsiteSale = publicWidget.Widget.extend(VariantMixin, car
             if (params['attr']) {
                 var attributeIds = params['attr'].split(',');
                 var $inputs = this.$('input.js_variant_change, select.js_variant_change option');
-                _.each(attributeIds, function (id) {
+                attributeIds.forEach((id) => {
                     var $toSelect = $inputs.filter('[data-value_id="' + id + '"]');
                     if ($toSelect.is('input[type="radio"]')) {
                         $toSelect.prop('checked', true);
@@ -191,17 +193,15 @@ publicWidget.registry.WebsiteSale = publicWidget.Widget.extend(VariantMixin, car
      * @param {Array} valueSelectors Selectors
      */
     _changeAttribute: function (valueSelectors) {
-        _.each(valueSelectors, function (selector) {
-            $(selector).removeClass("active")
-                       .filter(':has(input:checked)')
-                       .addClass("active");
+        valueSelectors.forEach((selector) => {
+            $(selector).removeClass("active").filter(":has(input:checked)").addClass("active");
         });
     },
     /**
      * @private
      */
     _changeCartQuantity: function ($input, value, $dom_optional, line_id, productIDs) {
-        _.each($dom_optional, function (elem) {
+        $($dom_optional).toArray().forEach((elem) => {
             $(elem).find('.js_quantity').text(value);
             productIDs.push($(elem).find('span[data-product-id]').data('product-id'));
         });
@@ -259,7 +259,7 @@ publicWidget.registry.WebsiteSale = publicWidget.Widget.extend(VariantMixin, car
             if (selectStates.data('init')===0 || selectStates.find('option').length===1) {
                 if (data.states.length || data.state_required) {
                     selectStates.html('');
-                    _.each(data.states, function (x) {
+                    data.states.forEach((x) => {
                         var opt = $('<option>').text(x[1])
                             .attr('value', x[0])
                             .attr('data-code', x[2]);
@@ -282,7 +282,7 @@ publicWidget.registry.WebsiteSale = publicWidget.Widget.extend(VariantMixin, car
                     $(".div_zip").after($(".div_city"));
                 }
                 var all_fields = ["street", "zip", "city", "country_name"]; // "state_code"];
-                _.each(all_fields, function (field) {
+                all_fields.forEach((field) => {
                     $(".checkout_autoformat .div_" + field.split('_')[0]).toggle($.inArray(field, data.fields)>=0);
                 });
             }
diff --git a/addons/website_sale/static/src/js/website_sale_delivery.js b/addons/website_sale/static/src/js/website_sale_delivery.js
index 556c92b4f97..79889b5490e 100644
--- a/addons/website_sale/static/src/js/website_sale_delivery.js
+++ b/addons/website_sale/static/src/js/website_sale_delivery.js
@@ -38,7 +38,7 @@ publicWidget.registry.websiteSaleDelivery = publicWidget.Widget.extend({
         }
 
         await this._getCurrentLocation();
-        await _.each(carriers, async carrierInput => {
+        await carriers.forEach(async (carrierInput) => {
             this._showLoading((carrierInput));
             await this._handleCarrierUpdateResult(carrierInput)
         });
diff --git a/addons/website_sale_comparison/static/src/js/website_sale_comparison.js b/addons/website_sale_comparison/static/src/js/website_sale_comparison.js
index 80dc892e936..12443567995 100644
--- a/addons/website_sale_comparison/static/src/js/website_sale_comparison.js
+++ b/addons/website_sale_comparison/static/src/js/website_sale_comparison.js
@@ -145,7 +145,7 @@ var ProductComparison = publicWidget.Widget.extend(VariantMixin, {
         }).then(function (data) {
             self.comparelist_product_ids = JSON.parse(data.cookies);
             delete data.cookies;
-            _.each(data, function (product) {
+            Object.values(data).forEach((product) => {
                 self.product_data[product.product.id] = product;
             });
             if (product_ids.length > Object.keys(data).length) {
@@ -191,7 +191,7 @@ var ProductComparison = publicWidget.Widget.extend(VariantMixin, {
     _updateContent: function (force) {
         var self = this;
         this.$('.o_comparelist_products .o_product_row').remove();
-        _.each(this.comparelist_product_ids, function (res) {
+        this.comparelist_product_ids.forEach((res) => {
             if (self.product_data.hasOwnProperty(res)) {
                 // It is possible that we do not have the required product_data for all IDs in
                 // comparelist_product_ids
diff --git a/addons/website_slides/static/src/js/slides.js b/addons/website_slides/static/src/js/slides.js
index 4213cde9a8a..792aa8ab77f 100644
--- a/addons/website_slides/static/src/js/slides.js
+++ b/addons/website_slides/static/src/js/slides.js
@@ -13,7 +13,7 @@ publicWidget.registry.websiteSlides = publicWidget.Widget.extend({
     start: function (parent) {
         var defs = [this._super.apply(this, arguments)];
 
-        _.each($("timeago.timeago"), function (el) {
+        $("timeago.timeago").toArray().forEach((el) => {
             var datetime = $(el).attr('datetime');
             var datetimeObj = time.str_to_datetime(datetime);
             // if presentation 7 days, 24 hours, 60 min, 60 second, 1000 millis old(one week)
diff --git a/addons/website_slides/static/src/js/slides_course_tag_add.js b/addons/website_slides/static/src/js/slides_course_tag_add.js
index 833c0a0cd7d..71e09f2719f 100644
--- a/addons/website_slides/static/src/js/slides_course_tag_add.js
+++ b/addons/website_slides/static/src/js/slides_course_tag_add.js
@@ -130,7 +130,7 @@ var TagCourseDialog = Dialog.extend({
             fill_data: function (query, data) {
                 var that = this,
                     tags = {results: []};
-                _.each(data, function (obj) {
+                Object.values(data).forEach((obj) => {
                     if (that.matcher(query.term, obj[nameKey])) {
                         tags.results.push({id: obj.id, text: obj[nameKey]});
                     }
diff --git a/addons/website_slides/static/src/js/slides_upload.js b/addons/website_slides/static/src/js/slides_upload.js
index 8aa27033705..d1df29820b6 100644
--- a/addons/website_slides/static/src/js/slides_upload.js
+++ b/addons/website_slides/static/src/js/slides_upload.js
@@ -231,7 +231,7 @@ var SlideUploadDialog = Dialog.extend({
         var self = this;
         // tags
         var tagValues = [];
-        _.each(this.$('#tag_ids').select2('data'), function (val) {
+        this.$('#tag_ids').select2('data').forEach((val) => {
             if (val.create) {
                 tagValues.push([0, 0, {'name': val.text}]);
             } else {
@@ -312,7 +312,7 @@ var SlideUploadDialog = Dialog.extend({
             fill_data: function (query, data) {
                 var self = this,
                     tags = {results: []};
-                _.each(data, function (obj) {
+                data.forEach((obj) => {
                     if (self.matcher(query.term, obj[nameKey])) {
                         tags.results.push({id: obj.id, text: obj[nameKey]});
                     }
diff --git a/addons/website_twitter/static/src/js/website.twitter.animation.js b/addons/website_twitter/static/src/js/website.twitter.animation.js
index 5176a3ce40b..6cc6b637502 100644
--- a/addons/website_twitter/static/src/js/website.twitter.animation.js
+++ b/addons/website_twitter/static/src/js/website.twitter.animation.js
@@ -77,7 +77,7 @@ publicWidget.registry.twitter = publicWidget.Widget.extend({
             var tweetSlices = [tweets.slice(0, f).join(' '), tweets.slice(f, f * 2).join(' '), tweets.slice(f * 2, tweets.length).join(' ')];
 
             self.$scroller = $(qweb.render('website.Twitter.Scroller')).appendTo($timeline);
-            _.each(self.$scroller.find('div[id^="scroller"]'), function (element, index) {
+            self.$scroller.find('div[id^="scroller"]').toArray().forEach((element, index) => {
                 var $scrollWrapper = $('<div/>', {class: 'scrollWrapper'});
                 var $scrollableArea = $('<div/>', {class: 'scrollableArea'});
                 $scrollWrapper.append($scrollableArea)
@@ -85,7 +85,7 @@ publicWidget.registry.twitter = publicWidget.Widget.extend({
                 $scrollableArea.append(tweetSlices[index]);
                 $(element).append($scrollWrapper);
                 var totalWidth = 0;
-                _.each($scrollableArea.children(), function (area) {
+                $scrollableArea.children().forEach((area) => {
                     totalWidth += $(area).outerWidth(true);
                 });
                 $scrollableArea.width(totalWidth);
@@ -115,7 +115,7 @@ publicWidget.registry.twitter = publicWidget.Widget.extend({
         if (!this.$scroller) {
             return;
         }
-        _.each(this.$scroller.find('.scrollWrapper'), function (el) {
+        this.$scroller.find('.scrollWrapper').toArray().forEach((el) => {
             var $wrapper = $(el);
             $wrapper.data('getNextElementWidth', true);
             $wrapper.data('autoScrollingInterval', setInterval(function () {
@@ -140,7 +140,7 @@ publicWidget.registry.twitter = publicWidget.Widget.extend({
         if (!this.$scroller) {
             return;
         }
-        _.each(this.$scroller.find('.scrollWrapper'), function (el) {
+        this.$scroller.find('.scrollWrapper').toArray().forEach((el) => {
             var $wrapper = $(el);
             clearInterval($wrapper.data('autoScrollingInterval'));
         });