diff --git a/components/input-number/index.tsx b/components/input-number/index.tsx
index 7b1b4418a..a2c7ad99b 100644
--- a/components/input-number/index.tsx
+++ b/components/input-number/index.tsx
@@ -72,7 +72,7 @@ const InputNumber = defineComponent({
 
     const mergedSize = computed(() => compactSize.value || size.value);
 
-    const mergedValue = shallowRef(props.value === undefined ? props.defaultValue : props.value);
+    const mergedValue = shallowRef(props.value ?? props.defaultValue);
     const focused = shallowRef(false);
     watch(
       () => props.value,
diff --git a/components/input/Password.tsx b/components/input/Password.tsx
index 0d65270b4..a516c0a84 100644
--- a/components/input/Password.tsx
+++ b/components/input/Password.tsx
@@ -59,7 +59,7 @@ export default defineComponent({
     });
     const getIcon = (prefixCls: string) => {
       const { action, iconRender = slots.iconRender || defaultIconRender } = props;
-      const iconTrigger = ActionMap[action!] || '';
+      const iconTrigger = ActionMap[action] || '';
       const icon = iconRender(visible.value);
       const iconProps = {
         [iconTrigger]: onVisibleChange,
diff --git a/components/input/TextArea.tsx b/components/input/TextArea.tsx
index 09c4a80d2..bfe0544cf 100644
--- a/components/input/TextArea.tsx
+++ b/components/input/TextArea.tsx
@@ -38,10 +38,10 @@ function setTriggerValue(
   let newTriggerValue = triggerValue;
   if (isCursorInEnd) {
     // 光标在尾部，直接截断
-    newTriggerValue = fixEmojiLength(triggerValue, maxLength!);
+    newTriggerValue = fixEmojiLength(triggerValue, maxLength);
   } else if (
     [...(preValue || '')].length < triggerValue.length &&
-    [...(triggerValue || '')].length > maxLength!
+    [...(triggerValue || '')].length > maxLength
   ) {
     // 光标在中间，如果最后的值超过最大值，则采用原先的值
     newTriggerValue = preValue;
@@ -58,7 +58,7 @@ export default defineComponent({
     const formItemContext = useInjectFormItemContext();
     const formItemInputContext = FormItemInputContext.useInject();
     const mergedStatus = computed(() => getMergedStatus(formItemInputContext.status, props.status));
-    const stateValue = shallowRef(props.value === undefined ? props.defaultValue : props.value);
+    const stateValue = shallowRef(props.value ?? props.defaultValue);
     const resizableTextArea = shallowRef();
     const mergedValue = shallowRef('');
     const { prefixCls, size, direction } = useConfigInject('input', props);
@@ -79,7 +79,7 @@ export default defineComponent({
     const onInternalCompositionStart = (e: CompositionEvent) => {
       compositing.value = true;
       // 拼音输入前保存一份旧值
-      oldCompositionValueRef.value = mergedValue.value as string;
+      oldCompositionValueRef.value = mergedValue.value;
       // 保存旧的光标位置
       oldSelectionStartRef.value = (e.currentTarget as any).selectionStart;
       emit('compositionstart', e);
@@ -94,7 +94,7 @@ export default defineComponent({
           oldSelectionStartRef.value === oldCompositionValueRef.value?.length;
         triggerValue = setTriggerValue(
           isCursorInEnd,
-          oldCompositionValueRef.value as string,
+          oldCompositionValueRef.value,
           triggerValue,
           props.maxlength,
         );
@@ -177,14 +177,14 @@ export default defineComponent({
         // 1. 复制粘贴超过maxlength的情况 2.未超过maxlength的情况
         const target = e.target as any;
         const isCursorInEnd =
-          target.selectionStart >= props.maxlength! + 1 ||
+          target.selectionStart >= props.maxlength + 1 ||
           target.selectionStart === triggerValue.length ||
           !target.selectionStart;
         triggerValue = setTriggerValue(
           isCursorInEnd,
-          mergedValue.value as string,
+          mergedValue.value,
           triggerValue,
-          props.maxlength!,
+          props.maxlength,
         );
       }
       resolveOnChange(e.currentTarget as any, e, triggerChange, triggerValue);
@@ -237,7 +237,7 @@ export default defineComponent({
     });
 
     watchEffect(() => {
-      let val = fixControlledValue(stateValue.value) as string;
+      let val = fixControlledValue(stateValue.value);
       if (
         !compositing.value &&
         hasMaxLength.value &&
diff --git a/components/input/calculateNodeHeight.tsx b/components/input/calculateNodeHeight.tsx
index 03ce2a984..509f7308b 100644
--- a/components/input/calculateNodeHeight.tsx
+++ b/components/input/calculateNodeHeight.tsx
@@ -48,9 +48,8 @@ const computedStyleCache: Record<string, NodeType> = {};
 let hiddenTextarea: HTMLTextAreaElement;
 
 export function calculateNodeStyling(node: HTMLElement, useCache = false) {
-  const nodeRef = (node.getAttribute('id') ||
-    node.getAttribute('data-reactid') ||
-    node.getAttribute('name')) as string;
+  const nodeRef =
+    node.getAttribute('id') || node.getAttribute('data-reactid') || node.getAttribute('name');
 
   if (useCache && computedStyleCache[nodeRef]) {
     return computedStyleCache[nodeRef];
@@ -103,7 +102,7 @@ export default function calculateAutoSizeStyle(
   // Fix wrap="off" issue
   // https://github.com/ant-design/ant-design/issues/6577
   if (uiTextNode.getAttribute('wrap')) {
-    hiddenTextarea.setAttribute('wrap', uiTextNode.getAttribute('wrap') as string);
+    hiddenTextarea.setAttribute('wrap', uiTextNode.getAttribute('wrap'));
   } else {
     hiddenTextarea.removeAttribute('wrap');
   }