diff --git a/packages/base/src/config/CalendarType.js b/packages/base/src/config/CalendarType.js
index ee90b723fb7f..b7c7dc986dae 100644
--- a/packages/base/src/config/CalendarType.js
+++ b/packages/base/src/config/CalendarType.js
@@ -5,7 +5,7 @@ const calendarType = getConfiguredCalendarType();
 
 const getCalendarType = () => {
 	if (calendarType) {
-		const type = Object.keys(CalendarType).filter(calType => calType === calendarType)[0];
+		const type = Object.keys(CalendarType).find(calType => calType === calendarType);
 
 		if (type) {
 			return type;
diff --git a/packages/base/src/features/browsersupport/IE11.js b/packages/base/src/features/browsersupport/IE11.js
index 211573695ac2..c0773767709d 100644
--- a/packages/base/src/features/browsersupport/IE11.js
+++ b/packages/base/src/features/browsersupport/IE11.js
@@ -6,6 +6,7 @@ import "../../thirdparty/Object.entries.js";
 
 // Array
 import "../../thirdparty/Array.prototype.fill.js";
+import "../../thirdparty/Array.prototype.find.js";
 import "../../thirdparty/Array.prototype.includes.js";
 
 // Number
diff --git a/packages/base/src/thirdparty/Array.prototype.find.js b/packages/base/src/thirdparty/Array.prototype.find.js
new file mode 100644
index 000000000000..f850da6b7f6c
--- /dev/null
+++ b/packages/base/src/thirdparty/Array.prototype.find.js
@@ -0,0 +1,46 @@
+// https://tc39.github.io/ecma262/#sec-array.prototype.find
+if (!Array.prototype.find) {
+	Object.defineProperty(Array.prototype, 'find', {
+		value: function (predicate) {
+			// 1. Let O be ? ToObject(this value).
+			if (this == null) {
+				throw TypeError('"this" is null or not defined');
+			}
+
+			var o = Object(this);
+
+			// 2. Let len be ? ToLength(? Get(O, "length")).
+			var len = o.length >>> 0;
+
+			// 3. If IsCallable(predicate) is false, throw a TypeError exception.
+			if (typeof predicate !== 'function') {
+				throw TypeError('predicate must be a function');
+			}
+
+			// 4. If thisArg was supplied, let T be thisArg; else let T be undefined.
+			var thisArg = arguments[1];
+
+			// 5. Let k be 0.
+			var k = 0;
+
+			// 6. Repeat, while k < len
+			while (k < len) {
+				// a. Let Pk be ! ToString(k).
+				// b. Let kValue be ? Get(O, Pk).
+				// c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+				// d. If testResult is true, return kValue.
+				var kValue = o[k];
+				if (predicate.call(thisArg, kValue, k, o)) {
+					return kValue;
+				}
+				// e. Increase k by 1.
+				k++;
+			}
+
+			// 7. Return undefined.
+			return undefined;
+		},
+		configurable: true,
+		writable: true
+	});
+}
diff --git a/packages/base/src/util/TabbableElements.js b/packages/base/src/util/TabbableElements.js
index 03f3545c21d2..f8d26ff9294c 100644
--- a/packages/base/src/util/TabbableElements.js
+++ b/packages/base/src/util/TabbableElements.js
@@ -21,7 +21,7 @@ const getTabbables = (nodes, tabbables) => {
 		if (currentNode.shadowRoot) {
 			// get the root node of the ShadowDom (1st none style tag)
 			const children = currentNode.shadowRoot.children;
-			currentNode = Array.from(children).filter(node => node.tagName !== "STYLE")[0];
+			currentNode = Array.from(children).find(node => node.tagName !== "STYLE");
 		}
 
 		if (isNodeTabbable(currentNode)) {
diff --git a/packages/main/src/MultiComboBox.js b/packages/main/src/MultiComboBox.js
index d523c8b4175f..f3cebab30a3d 100644
--- a/packages/main/src/MultiComboBox.js
+++ b/packages/main/src/MultiComboBox.js
@@ -325,7 +325,7 @@ class MultiComboBox extends UI5Element {
 
 	_tokenDelete(event) {
 		const token = event.detail.ref;
-		const deletingItem = this.items.filter(item => item._id === token.getAttribute("data-ui5-id"))[0];
+		const deletingItem = this.items.find(item => item._id === token.getAttribute("data-ui5-id"));
 
 		deletingItem.selected = false;
 		this._deleting = true;
diff --git a/packages/main/src/ShellBar.js b/packages/main/src/ShellBar.js
index b497a4004e3a..bf148ad1d01f 100644
--- a/packages/main/src/ShellBar.js
+++ b/packages/main/src/ShellBar.js
@@ -403,9 +403,9 @@ class ShellBar extends UI5Element {
 
 		this._itemNav.setItemsCallback = items => {
 			const newItems = that._itemsInfo.map(stateItem => {
-				const mappingItem = items.filter(item => {
+				const mappingItem = items.find(item => {
 					return item.id === stateItem.id;
-				})[0];
+				});
 
 				const clone = JSON.parse(JSON.stringify(stateItem));
 				clone._tabIndex = mappingItem ? mappingItem._tabIndex : "-1";
@@ -483,7 +483,7 @@ class ShellBar extends UI5Element {
 		const width = this.getBoundingClientRect().width;
 		const breakpoints = ShellBar.FIORI_3_BREAKPOINTS;
 
-		const size = breakpoints.filter(bp1 => width < bp1)[0] || ShellBar.FIORI_3_BREAKPOINTS[ShellBar.FIORI_3_BREAKPOINTS.length - 1];
+		const size = breakpoints.find(bp1 => width < bp1) || ShellBar.FIORI_3_BREAKPOINTS[ShellBar.FIORI_3_BREAKPOINTS.length - 1];
 		const mappedSize = ShellBar.FIORI_3_BREAKPOINTS_MAP[size];
 
 		if (this.breakpointSize !== mappedSize) {
@@ -583,11 +583,11 @@ class ShellBar extends UI5Element {
 			return 1;
 		});
 
-		const focusedItem = items.filter(item => {
+		const focusedItem = items.find(item => {
 			return (item.classes.indexOf("ui5-shellbar-invisible-button") === -1)
 				&& (item.classes.indexOf("ui5-shellbar-overflow-button") === -1)
 				&& (item.classes.indexOf("ui5-shellbar-hidden-button") === -1);
-		})[0];
+		});
 
 		return focusedItem;
 	}
@@ -680,9 +680,9 @@ class ShellBar extends UI5Element {
 		this._itemNav.currentIndex = elementIndex;
 
 		if (refItemId) {
-			const shellbarItem = this.items.filter(item => {
+			const shellbarItem = this.items.find(item => {
 				return item.shadowRoot.querySelector(`#${refItemId}`);
-			})[0];
+			});
 
 			const prevented = !shellbarItem.fireEvent("itemClick", { targetRef: event.target }, true);