diff --git a/packages/components/infinite-scroll/src/index.ts b/packages/components/infinite-scroll/src/index.ts
index 4f32230b23..4c1ccf782f 100644
--- a/packages/components/infinite-scroll/src/index.ts
+++ b/packages/components/infinite-scroll/src/index.ts
@@ -6,7 +6,6 @@ import {
   getOffsetTopDistance,
 } from '@element-plus/utils/dom'
 import { throwError } from '@element-plus/utils/error'
-import { entries } from '@element-plus/utils/util'
 
 import type { ObjectDirective, ComponentPublicInstance } from 'vue'
 
@@ -54,7 +53,7 @@ const getScrollOptions = (
   el: HTMLElement,
   instance: ComponentPublicInstance
 ): ScrollOptions => {
-  return entries(attributes).reduce((acm, [name, option]) => {
+  return Object.entries(attributes).reduce((acm, [name, option]) => {
     const { type, default: defaultValue } = option
     const attrVal = el.getAttribute(`infinite-scroll-${name}`)
     let value = instance[attrVal] ?? attrVal ?? defaultValue
diff --git a/packages/components/select/src/useSelect.ts b/packages/components/select/src/useSelect.ts
index 3c5dcd41a7..a492ce0801 100644
--- a/packages/components/select/src/useSelect.ts
+++ b/packages/components/select/src/useSelect.ts
@@ -7,12 +7,7 @@ import isServer from '@element-plus/utils/isServer'
 import scrollIntoView from '@element-plus/utils/scroll-into-view'
 import lodashDebounce from 'lodash/debounce'
 import { isKorean } from '@element-plus/utils/isDef'
-import {
-  getValueByPath,
-  isIE,
-  isEdge,
-  useGlobalConfig,
-} from '@element-plus/utils/util'
+import { getValueByPath, useGlobalConfig } from '@element-plus/utils/util'
 import { elFormKey, elFormItemKey } from '@element-plus/tokens'
 import isEqual from 'lodash/isEqual'
 import { isObject, toRawType } from '@vue/shared'
@@ -72,10 +67,7 @@ export const useSelect = (props, states: States, ctx) => {
   const elFormItem = inject(elFormItemKey, {} as ElFormItemContext)
 
   const readonly = computed(
-    () =>
-      !props.filterable ||
-      props.multiple ||
-      (!isIE() && !isEdge() && !states.visible)
+    () => !props.filterable || props.multiple || !states.visible
   )
 
   const selectDisabled = computed(() => props.disabled || elForm.disabled)
diff --git a/packages/components/table/src/store/current.ts b/packages/components/table/src/store/current.ts
index 19b332427e..9b8ed1e353 100644
--- a/packages/components/table/src/store/current.ts
+++ b/packages/components/table/src/store/current.ts
@@ -1,5 +1,4 @@
 import { ref, getCurrentInstance, unref } from 'vue'
-import { arrayFind } from '@element-plus/utils/util'
 import { getRowIdentity } from '../util'
 
 import type { Ref } from 'vue'
@@ -25,8 +24,7 @@ function useCurrent<T>(watcherData: WatcherPropsData<T>) {
     const { data, rowKey } = watcherData
     let _currentRow = null
     if (rowKey.value) {
-      _currentRow = arrayFind(
-        unref(data) || [],
+      _currentRow = (unref(data) || []).find(
         (item) => getRowIdentity(item, rowKey.value) === key
       )
     }
diff --git a/packages/components/table/src/store/index.ts b/packages/components/table/src/store/index.ts
index 1e55fbedc1..71a7de0eef 100644
--- a/packages/components/table/src/store/index.ts
+++ b/packages/components/table/src/store/index.ts
@@ -1,5 +1,4 @@
 import { nextTick, getCurrentInstance, unref } from 'vue'
-import { arrayFind } from '@element-plus/utils/util'
 import useWatcher from './watcher'
 
 import type { Ref } from 'vue'
@@ -126,8 +125,7 @@ function useStore<T>() {
     sort(states: StoreStates, options: Sort) {
       const { prop, order, init } = options
       if (prop) {
-        const column = arrayFind(
-          unref(states.columns),
+        const column = unref(states.columns).find(
           (column) => column.property === prop
         )
         if (column) {
diff --git a/packages/components/table/src/table-body/render-helper.ts b/packages/components/table/src/table-body/render-helper.ts
index cdfa40db0f..ab6d6ce30b 100644
--- a/packages/components/table/src/table-body/render-helper.ts
+++ b/packages/components/table/src/table-body/render-helper.ts
@@ -1,5 +1,4 @@
 import { h, getCurrentInstance, computed } from 'vue'
-import { arrayFindIndex } from '@element-plus/utils/util'
 import useEvents from './events-helper'
 import useStyles from './styles-helper'
 import { getRowIdentity } from '../util'
@@ -31,8 +30,7 @@ function useRender<T>(props: Partial<TableBodyProps<T>>) {
     getColspanRealWidth,
   } = useStyles(props)
   const firstDefaultColumnIndex = computed(() => {
-    return arrayFindIndex(
-      props.store.states.columns.value,
+    return props.store.states.columns.value.findIndex(
       ({ type }) => type === 'default'
     )
   })
diff --git a/packages/hooks/use-attrs/index.ts b/packages/hooks/use-attrs/index.ts
index 2b86602517..fed3e4fa25 100644
--- a/packages/hooks/use-attrs/index.ts
+++ b/packages/hooks/use-attrs/index.ts
@@ -1,5 +1,5 @@
 import { getCurrentInstance, computed } from 'vue'
-import { warn } from '@element-plus/utils/error'
+import { debugWarn } from '@element-plus/utils/error'
 
 import type { ComputedRef } from 'vue'
 
@@ -17,7 +17,7 @@ export default (params: Params = {}): ComputedRef<Record<string, unknown>> => {
 
   const instance = getCurrentInstance()
   if (!instance) {
-    warn(
+    debugWarn(
       'use-attrs',
       'getCurrentInstance() returned null. useAttrs() must be called at the top of a setup function'
     )
diff --git a/packages/utils/util.ts b/packages/utils/util.ts
index e44f35e23a..8db56c9afe 100644
--- a/packages/utils/util.ts
+++ b/packages/utils/util.ts
@@ -17,14 +17,7 @@ import isServer from './isServer'
 import { debugWarn } from './error'
 
 import type { ComponentPublicInstance, CSSProperties, Ref } from 'vue'
-import type { AnyFunction, TimeoutHandle, Hash, Nullable } from './types'
-
-// type polyfill for compat isIE method
-declare global {
-  interface Document {
-    documentMode?: any
-  }
-}
+import type { AnyFunction, TimeoutHandle, Nullable } from './types'
 
 export const SCOPE = 'Util'
 
@@ -103,13 +96,9 @@ export const coerceTruthyValueToArray = (arr) => {
   return Array.isArray(arr) ? arr : [arr]
 }
 
-export const isIE = function (): boolean {
-  return !isServer && !isNaN(Number(document.documentMode))
-}
-
-export const isEdge = function (): boolean {
-  return !isServer && navigator.userAgent.indexOf('Edge') > -1
-}
+// drop IE and (Edge < 79) support
+// export const isIE
+// export const isEdge
 
 export const isFirefox = function (): boolean {
   return !isServer && !!window.navigator.userAgent.match(/firefox/i)
@@ -177,10 +166,6 @@ export function getRandomInt(max: number) {
   return Math.floor(Math.random() * Math.floor(max))
 }
 
-export function entries<T>(obj: Hash<T>): [string, T][] {
-  return Object.keys(obj).map((key: string) => [key, obj[key]])
-}
-
 export function isUndefined(val: any): val is undefined {
   return val === undefined
 }
@@ -193,20 +178,6 @@ export function useGlobalConfig() {
   return {}
 }
 
-export const arrayFindIndex = function <T = any>(
-  arr: Array<T>,
-  pred: (args: T) => boolean
-): number {
-  return arr.findIndex(pred)
-}
-
-export const arrayFind = function <T>(
-  arr: Array<T>,
-  pred: (args: T) => boolean
-): T {
-  return arr.find(pred)
-}
-
 export function isEmpty(val: unknown) {
   if (
     (!val && val !== 0) ||