diff --git a/cocos/2d/assembler/label/font-utils.ts b/cocos/2d/assembler/label/font-utils.ts
index 464bcb66ea2..229a8aef819 100644
--- a/cocos/2d/assembler/label/font-utils.ts
+++ b/cocos/2d/assembler/label/font-utils.ts
@@ -400,7 +400,7 @@ export class LetterAtlas {
     }
 
     public getLetterDefinitionForChar (char: string, labelInfo: ILabelInfo): any {
-        const hash = char.charCodeAt(0) + labelInfo.hash;
+        const hash = char.charCodeAt(0).toString() + labelInfo.hash;
         let letter = this.fontDefDictionary.letterDefinitions[hash];
         if (!letter) {
             const temp = new LetterTexture(char, labelInfo);
@@ -445,13 +445,13 @@ export const shareLabelInfo: IShareLabelInfo = {
     fontScale: 1,
 };
 
-export function computeHash (labelInfo): string {
+export function computeHash (labelInfo: IShareLabelInfo): string {
     const hashData = '';
     const color = labelInfo.color.toHEX();
     let out = '';
     if (labelInfo.isOutlined && labelInfo.margin > 0) {
-        out = out + labelInfo.margin + labelInfo.out.toHEX();
+        out = out + labelInfo.margin.toString() + labelInfo.out.toHEX();
     }
 
-    return hashData + labelInfo.fontSize + labelInfo.fontFamily + color + out;
+    return hashData + labelInfo.fontSize.toString() + labelInfo.fontFamily + color + out;
 }
diff --git a/cocos/2d/assets/sprite-atlas.ts b/cocos/2d/assets/sprite-atlas.ts
index 75af3306541..1e3b05d87fe 100644
--- a/cocos/2d/assets/sprite-atlas.ts
+++ b/cocos/2d/assets/sprite-atlas.ts
@@ -125,6 +125,7 @@ export class SpriteAtlas extends Asset {
                 spriteFrames: frames,
             };
         }
+        return null;
     }
 
     /**
diff --git a/cocos/3d/framework/mesh-renderer.ts b/cocos/3d/framework/mesh-renderer.ts
index 0a2dff24b80..c679ef5ca7a 100644
--- a/cocos/3d/framework/mesh-renderer.ts
+++ b/cocos/3d/framework/mesh-renderer.ts
@@ -990,7 +990,7 @@ export class MeshRenderer extends ModelRenderer {
     /**
      * @engineInternal
      */
-    public isUseGPUScene () {
+    public isUseGPUScene (): boolean {
         const sceneData = cclegacy.director.root.pipeline.pipelineSceneData;
         if (!sceneData || !sceneData.isGPUDrivenEnabled()) {
             return false;
diff --git a/cocos/animation/animation-clip.ts b/cocos/animation/animation-clip.ts
index 7285e2a1fd9..66fe4afc13c 100644
--- a/cocos/animation/animation-clip.ts
+++ b/cocos/animation/animation-clip.ts
@@ -1450,7 +1450,7 @@ class RootMotionEvaluation {
 }
 
 function relativeTransform (out: Mat4, from: Mat4, to: Mat4): void {
-Mat4.invert(out, from);
+    Mat4.invert(out, from);
     Mat4.multiply(out, to, out);
 }
 
@@ -1533,7 +1533,7 @@ class EventEvaluator {
         }
     }
 
-    public reset () {
+    public reset (): void {
         this._lastFrameIndex = -1;
         this._lastIterations = 0.0;
         this._lastDirection = 0;
diff --git a/cocos/animation/marionette/motion/animation-blend.ts b/cocos/animation/marionette/motion/animation-blend.ts
index 9162838c109..ba1f9ac8a94 100644
--- a/cocos/animation/marionette/motion/animation-blend.ts
+++ b/cocos/animation/marionette/motion/animation-blend.ts
@@ -212,7 +212,7 @@ class AnimationBlendPort implements MotionPort {
         return this._host.__evaluatePort(this, progress, context);
     }
 
-    public reenter () {
+    public reenter (): void {
         const { childPorts } = this;
         const nChildPorts = childPorts.length;
         for (let iChild = 0; iChild < nChildPorts; ++iChild) {
diff --git a/cocos/animation/marionette/motion/clip-motion.ts b/cocos/animation/marionette/motion/clip-motion.ts
index def4d6ca5af..12fd4172b28 100644
--- a/cocos/animation/marionette/motion/clip-motion.ts
+++ b/cocos/animation/marionette/motion/clip-motion.ts
@@ -168,7 +168,7 @@ class ClipMotionEval implements MotionEval {
         }
     }
 
-    public reenter () {
+    public reenter (): void {
         this._frameEventEval?.reset();
     }
 
@@ -216,7 +216,7 @@ class ClipMotionPort implements MotionPort {
         return this._eval[evaluatePortTag](progress, context);
     }
 
-    public reenter () {
+    public reenter (): void {
         this._eval.reenter();
     }
 
diff --git a/cocos/audio/audio-manager.ts b/cocos/audio/audio-manager.ts
index 1db9a09b026..a7041c5dd52 100644
--- a/cocos/audio/audio-manager.ts
+++ b/cocos/audio/audio-manager.ts
@@ -23,7 +23,7 @@
 */
 
 import { AudioPlayer, OneShotAudio } from 'pal/audio';
-import { js } from '../core';
+import { error, js } from '../core';
 
 type ManagedAudio = AudioPlayer | OneShotAudio;
 interface AudioInfo<T> {
@@ -97,7 +97,7 @@ export class AudioManager {
             });
         }
         if (audioInfoToDiscard) {
-            audioInfoToDiscard.audio.stop();
+            audioInfoToDiscard.audio.stop()?.catch((err) => { error(err); });
             this.removePlaying(audioInfoToDiscard.audio);
         }
     }
diff --git a/cocos/core/data/utils/compact-value-type-array.ts b/cocos/core/data/utils/compact-value-type-array.ts
index 7ef55c50be1..338ac3450df 100644
--- a/cocos/core/data/utils/compact-value-type-array.ts
+++ b/cocos/core/data/utils/compact-value-type-array.ts
@@ -24,6 +24,7 @@
 
 import { ccclass, serializable } from 'cc.decorator';
 import { Vec3, Quat, Vec4, Vec2, Mat4 } from '../../math';
+import { error } from '../../platform';
 
 export enum StorageUnit {
     Uint8, Uint16, Uint32,
@@ -110,9 +111,9 @@ export class CompactValueTypeArray {
      */
     public static compress (values: any[], elementType: ElementType, unit: StorageUnit, arrayBuffer: ArrayBuffer, byteOffset: number, presumedByteOffset: number): CompactValueTypeArray {
         const elementTraits = getElementTraits(elementType);
-        const storageConstructor = getStorageConstructor(unit);
+        const StorageConstructor = getStorageConstructor(unit);
         const unitCount = elementTraits.requiredUnits * values.length;
-        const storage = new storageConstructor(arrayBuffer, byteOffset, unitCount);
+        const storage = new StorageConstructor(arrayBuffer, byteOffset, unitCount);
         for (let i = 0; i < values.length; ++i) {
             elementTraits.compress(storage, i, values[i]);
         }
@@ -132,8 +133,8 @@ export class CompactValueTypeArray {
     public decompress<T> (arrayBuffer: ArrayBuffer): T[] {
         const { storageUnit, elementType } = extractStorageUnitElementType(this._unitElement);
         const elementTraits = getElementTraits(elementType);
-        const storageConstructor = getStorageConstructor(storageUnit);
-        const storage = new storageConstructor(arrayBuffer, this._byteOffset, this._unitCount);
+        const StorageConstructor = getStorageConstructor(storageUnit);
+        const storage = new StorageConstructor(arrayBuffer, this._byteOffset, this._unitCount);
         const result = new Array<T>(this._length);
         for (let i = 0; i < this._length; ++i) {
             result[i] = elementTraits.decompress(storage, i);
@@ -164,6 +165,9 @@ function getStorageConstructor (unit: StorageUnit): TypedArrayConstructor {
         return Float32Array;
     case StorageUnit.Float64:
         return Float64Array;
+    default:
+        error('Unknown uint type. Return Uint8Array.');
+        return Uint8Array;
     }
 }
 
diff --git a/cocos/core/data/utils/extends-enum.ts b/cocos/core/data/utils/extends-enum.ts
index 546ed14c86e..09a4abe70f1 100644
--- a/cocos/core/data/utils/extends-enum.ts
+++ b/cocos/core/data/utils/extends-enum.ts
@@ -44,7 +44,7 @@ import { errorID } from '../../platform/debug';
  * const ApplePen = extendsEnum(Apple, Pen);
  * ```
  */
-export function extendsEnum (): {};
+export function extendsEnum (): {}
 
 export function extendsEnum<E0> (e0: E0): E0;
 
diff --git a/cocos/core/data/utils/preprocess-class.ts b/cocos/core/data/utils/preprocess-class.ts
index b326e484a52..2ad836fab45 100644
--- a/cocos/core/data/utils/preprocess-class.ts
+++ b/cocos/core/data/utils/preprocess-class.ts
@@ -92,7 +92,8 @@ function parseType (val, type, className, propName): void {
         if (type.length > 0) {
             val.type = type = type[0];
         } else {
-            return errorID(5508, className, propName);
+            errorID(5508, className, propName);
+            return;
         }
     }
     if (typeof type === 'function') {
@@ -132,6 +133,8 @@ function parseType (val, type, className, propName): void {
         case null:
             warnID(5511, className, propName);
             break;
+        default:
+            break;
         }
     }
 
@@ -153,6 +156,7 @@ function getBaseClassWherePropertyDefined_DEV (propName, cls): any {
         }
         return res;
     }
+    return null;
 }
 
 function _wrapOptions (isGetset: boolean, _default, type?: Function | Function[] | PrimitiveType<any>): {