diff --git a/packages/commons/package.json b/packages/commons/package.json
index e94dc64d63..4d5ae71edc 100644
--- a/packages/commons/package.json
+++ b/packages/commons/package.json
@@ -19,8 +19,8 @@
     "build:cjs": "tsc --build tsconfig.json && echo '{ \"type\": \"commonjs\" }' > lib/cjs/package.json",
     "build:esm": "tsc --build tsconfig.esm.json && echo '{ \"type\": \"module\" }' > lib/esm/package.json",
     "build": "npm run build:esm & npm run build:cjs",
-    "lint": "eslint --ext .ts,.js --no-error-on-unmatched-pattern .",
-    "lint-fix": "eslint --fix --ext .ts,.js --no-error-on-unmatched-pattern .",
+    "lint": "biome lint .",
+    "lint:fix": "biome check --write .",
     "prepack": "node ../../.github/scripts/release_patch_package_json.js ."
   },
   "homepage": "https://github.com/aws-powertools/powertools-lambda-typescript/tree/main/packages/commons#readme",
@@ -52,25 +52,14 @@
   },
   "typesVersions": {
     "*": {
-      "typeutils": [
-        "lib/cjs/typeUtils.d.ts",
-        "lib/esm/typeUtils.d.ts"
-      ],
-      "utils/base64": [
-        "lib/cjs/fromBase64.d.ts",
-        "lib/esm/fromBase64.d.ts"
-      ],
-      "types": [
-        "lib/cjs/types/index.d.ts",
-        "lib/esm/types/index.d.ts"
-      ]
+      "typeutils": ["lib/cjs/typeUtils.d.ts", "lib/esm/typeUtils.d.ts"],
+      "utils/base64": ["lib/cjs/fromBase64.d.ts", "lib/esm/fromBase64.d.ts"],
+      "types": ["lib/cjs/types/index.d.ts", "lib/esm/types/index.d.ts"]
     }
   },
   "types": "./lib/cjs/index.d.ts",
   "main": "./lib/cjs/index.js",
-  "files": [
-    "lib"
-  ],
+  "files": ["lib"],
   "repository": {
     "type": "git",
     "url": "git+https://github.com/aws-powertools/powertools-lambda-typescript.git"
@@ -78,13 +67,7 @@
   "bugs": {
     "url": "https://github.com/aws-powertools/powertools-lambda-typescript/issues"
   },
-  "keywords": [
-    "aws",
-    "lambda",
-    "powertools",
-    "serverless",
-    "nodejs"
-  ],
+  "keywords": ["aws", "lambda", "powertools", "serverless", "nodejs"],
   "devDependencies": {
     "@aws-lambda-powertools/testing-utils": "file:../testing"
   }
diff --git a/packages/commons/src/awsSdkUtils.ts b/packages/commons/src/awsSdkUtils.ts
index 451661b007..df922f9e27 100644
--- a/packages/commons/src/awsSdkUtils.ts
+++ b/packages/commons/src/awsSdkUtils.ts
@@ -1,5 +1,5 @@
-import { PT_VERSION } from './version.js';
 import type { MiddlewareArgsLike, SdkClient } from './types/awsSdk.js';
+import { PT_VERSION } from './version.js';
 
 const EXEC_ENV = process.env.AWS_EXECUTION_ENV || 'NA';
 const middlewareOptions = {
@@ -96,7 +96,7 @@ const addUserAgentMiddleware = (client: unknown, feature: string): void => {
       );
     } else {
       throw new Error(
-        `The client provided does not match the expected interface`
+        'The client provided does not match the expected interface'
       );
     }
   } catch (error) {
diff --git a/packages/commons/src/config/EnvironmentVariablesService.ts b/packages/commons/src/config/EnvironmentVariablesService.ts
index f9b2003a44..726c05b683 100644
--- a/packages/commons/src/config/EnvironmentVariablesService.ts
+++ b/packages/commons/src/config/EnvironmentVariablesService.ts
@@ -108,11 +108,11 @@ class EnvironmentVariablesService implements ConfigServiceInterface {
 
     const xRayTraceData: Record<string, string> = {};
 
-    xRayTraceEnv.split(';').forEach((field) => {
+    for (const field of xRayTraceEnv.split(';')) {
       const [key, value] = field.split('=');
 
       xRayTraceData[key] = value;
-    });
+    }
 
     return xRayTraceData;
   }
diff --git a/packages/commons/src/fromBase64.ts b/packages/commons/src/fromBase64.ts
index 5fd0236c64..44179987fe 100644
--- a/packages/commons/src/fromBase64.ts
+++ b/packages/commons/src/fromBase64.ts
@@ -22,10 +22,10 @@ const BASE64_REGEX = /^[A-Za-z0-9+/]*={0,2}$/;
  */
 const fromBase64 = (input: string, encoding?: BufferEncoding): Uint8Array => {
   if ((input.length * 3) % 4 !== 0) {
-    throw new TypeError(`Incorrect padding on base64 string.`);
+    throw new TypeError('Incorrect padding on base64 string.');
   }
   if (!BASE64_REGEX.exec(input)) {
-    throw new TypeError(`Invalid base64 string.`);
+    throw new TypeError('Invalid base64 string.');
   }
   const buffer = encoding ? Buffer.from(input, encoding) : Buffer.from(input);
 
diff --git a/packages/commons/src/middleware/cleanupMiddlewares.ts b/packages/commons/src/middleware/cleanupMiddlewares.ts
index 7c393077e1..577b793904 100644
--- a/packages/commons/src/middleware/cleanupMiddlewares.ts
+++ b/packages/commons/src/middleware/cleanupMiddlewares.ts
@@ -1,10 +1,10 @@
+import type { CleanupFunction, MiddyLikeRequest } from '../types/middy.js';
 import {
-  TRACER_KEY,
-  METRICS_KEY,
-  LOGGER_KEY,
   IDEMPOTENCY_KEY,
+  LOGGER_KEY,
+  METRICS_KEY,
+  TRACER_KEY,
 } from './constants.js';
-import type { MiddyLikeRequest, CleanupFunction } from '../types/middy.js';
 
 /**
  * Typeguard to assert that an object is of Function type.
diff --git a/packages/commons/src/typeUtils.ts b/packages/commons/src/typeUtils.ts
index 3cd53b81fc..9a4dbd1b34 100644
--- a/packages/commons/src/typeUtils.ts
+++ b/packages/commons/src/typeUtils.ts
@@ -99,17 +99,21 @@ const isIntegerNumber = (value: unknown): value is number => {
 const isTruthy = (value: unknown): boolean => {
   if (isString(value)) {
     return value !== '';
-  } else if (isNumber(value)) {
+  }
+  if (isNumber(value)) {
     return value !== 0;
-  } else if (typeof value === 'boolean') {
+  }
+  if (typeof value === 'boolean') {
     return value;
-  } else if (Array.isArray(value)) {
+  }
+  if (Array.isArray(value)) {
     return value.length > 0;
-  } else if (isRecord(value)) {
+  }
+  if (isRecord(value)) {
     return Object.keys(value).length > 0;
-  } else {
-    return false;
   }
+
+  return false;
 };
 
 /**
@@ -168,19 +172,24 @@ const isNullOrUndefined = (value: unknown): value is null | undefined => {
 const getType = (value: unknown): string => {
   if (Array.isArray(value)) {
     return 'array';
-  } else if (isRecord(value)) {
+  }
+  if (isRecord(value)) {
     return 'object';
-  } else if (isString(value)) {
+  }
+  if (isString(value)) {
     return 'string';
-  } else if (isNumber(value)) {
+  }
+  if (isNumber(value)) {
     return 'number';
-  } else if (typeof value === 'boolean') {
+  }
+  if (typeof value === 'boolean') {
     return 'boolean';
-  } else if (isNull(value)) {
+  }
+  if (isNull(value)) {
     return 'null';
-  } else {
-    return 'unknown';
   }
+
+  return 'unknown';
 };
 
 /**
diff --git a/packages/commons/tests/tsconfig.json b/packages/commons/tests/tsconfig.json
index 5654b3e15f..45ba862a85 100644
--- a/packages/commons/tests/tsconfig.json
+++ b/packages/commons/tests/tsconfig.json
@@ -1,11 +1,8 @@
 {
-    "extends": "../tsconfig.json",
-    "compilerOptions": {
-        "rootDir": "../",
-        "noEmit": true
-    },
-    "include": [
-        "../src/**/*",
-        "./**/*",
-    ]
-}
\ No newline at end of file
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "rootDir": "../",
+    "noEmit": true
+  },
+  "include": ["../src/**/*", "./**/*"]
+}
diff --git a/packages/commons/tests/unit/EnvironmentVariablesService.test.ts b/packages/commons/tests/unit/EnvironmentVariablesService.test.ts
index 230e04afb0..2c7b7266f3 100644
--- a/packages/commons/tests/unit/EnvironmentVariablesService.test.ts
+++ b/packages/commons/tests/unit/EnvironmentVariablesService.test.ts
@@ -32,7 +32,7 @@ describe('Class: EnvironmentVariablesService', () => {
 
     test('When the variable IS NOT present, it returns an empty string', () => {
       // Prepare
-      delete process.env.CUSTOM_VARIABLE;
+      process.env.CUSTOM_VARIABLE = undefined;
       const service = new EnvironmentVariablesService();
 
       // Act
@@ -84,7 +84,7 @@ describe('Class: EnvironmentVariablesService', () => {
 
     test('It returns the value of the Root X-Ray segment ID properly formatted', () => {
       // Prepare
-      delete process.env._X_AMZN_TRACE_ID;
+      process.env._X_AMZN_TRACE_ID = undefined;
       const service = new EnvironmentVariablesService();
 
       // Act
@@ -124,7 +124,7 @@ describe('Class: EnvironmentVariablesService', () => {
 
     it('It returns false when no _X_AMZN_TRACE_ID environment variable is present', () => {
       // Prepare
-      delete process.env._X_AMZN_TRACE_ID;
+      process.env._X_AMZN_TRACE_ID = undefined;
       const service = new EnvironmentVariablesService();
 
       // Act
diff --git a/packages/commons/tests/unit/LambdaInterface.test.ts b/packages/commons/tests/unit/LambdaInterface.test.ts
index 7d7decc5a0..4afc6e40f9 100644
--- a/packages/commons/tests/unit/LambdaInterface.test.ts
+++ b/packages/commons/tests/unit/LambdaInterface.test.ts
@@ -3,13 +3,12 @@
  *
  * @group unit/commons/lambdaInterface
  */
-import { Handler } from 'aws-lambda';
-import { Callback, Context } from 'aws-lambda';
 import context from '@aws-lambda-powertools/testing-utils/context';
+import type { Callback, Context, Handler } from 'aws-lambda';
 import type {
-  SyncHandler,
   AsyncHandler,
   LambdaInterface,
+  SyncHandler,
 } from '../../src/types/index.js';
 
 describe('LambdaInterface with arrow function', () => {
@@ -105,10 +104,8 @@ describe('LambdaInterface with decorator', () => {
               callback,
             ]);
             console.log(`Invoked ${String(_propertyKey)}`);
-          } catch (error) {
-            throw error;
           } finally {
-            console.log(`Finally from decorator`);
+            console.log('Finally from decorator');
           }
 
           return result;
diff --git a/packages/commons/tests/unit/Utility.test.ts b/packages/commons/tests/unit/Utility.test.ts
index 9e9d18194e..f60e7edeea 100644
--- a/packages/commons/tests/unit/Utility.test.ts
+++ b/packages/commons/tests/unit/Utility.test.ts
@@ -14,10 +14,6 @@ describe('Class: Utility', () => {
   describe('Method: getDefaultServiceName', () => {
     test('it should return the default service name', () => {
       class PowerTool extends Utility {
-        public constructor() {
-          super();
-        }
-
         public dummyMethod(): string {
           return this.getDefaultServiceName();
         }
@@ -56,10 +52,6 @@ describe('Class: Utility', () => {
     test('when called multiple times on a child class, it returns true the first time, then false afterwards', () => {
       // Prepare
       class PowerTool extends Utility {
-        public constructor() {
-          super();
-        }
-
         public dummyMethod(): boolean {
           return this.getColdStart();
         }
@@ -115,10 +107,6 @@ describe('Class: Utility', () => {
     test('when called multiple times on a child class, it returns true the first time, then false afterwards', () => {
       // Prepare
       class PowerTool extends Utility {
-        public constructor() {
-          super();
-        }
-
         public dummyMethod(): boolean {
           return this.isColdStart();
         }
@@ -149,10 +137,6 @@ describe('Class: Utility', () => {
 
   describe('Method: isValidServiceName', () => {
     class PowerTool extends Utility {
-      public constructor() {
-        super();
-      }
-
       public dummyMethod(name: string): boolean {
         return this.isValidServiceName(name);
       }
diff --git a/packages/commons/tests/unit/awsSdkUtils.test.ts b/packages/commons/tests/unit/awsSdkUtils.test.ts
index 0a2e4c6cd7..da06ea7729 100644
--- a/packages/commons/tests/unit/awsSdkUtils.test.ts
+++ b/packages/commons/tests/unit/awsSdkUtils.test.ts
@@ -1,9 +1,14 @@
+/**
+ * Test AWS SDK utilities
+ *
+ * @group unit/commons/awsSdkUtils
+ */
+import { customUserAgentMiddleware } from '../../src/awsSdkUtils.js';
 import {
   addUserAgentMiddleware,
   isSdkClient,
   PT_VERSION as version,
 } from '../../src/index.js';
-import { customUserAgentMiddleware } from '../../src/awsSdkUtils.js';
 
 describe('Helpers: awsSdk', () => {
   describe('Function: userAgentMiddleware', () => {
diff --git a/packages/commons/tests/unit/cleanupMiddlewares.test.ts b/packages/commons/tests/unit/cleanupMiddlewares.test.ts
index 15295a0396..8b178f2e9f 100644
--- a/packages/commons/tests/unit/cleanupMiddlewares.test.ts
+++ b/packages/commons/tests/unit/cleanupMiddlewares.test.ts
@@ -3,14 +3,14 @@
  *
  * @group unit/commons/cleanupMiddlewares
  */
+import context from '@aws-lambda-powertools/testing-utils/context';
 import {
-  cleanupMiddlewares,
-  TRACER_KEY,
-  METRICS_KEY,
-  LOGGER_KEY,
   IDEMPOTENCY_KEY,
+  LOGGER_KEY,
+  METRICS_KEY,
+  TRACER_KEY,
+  cleanupMiddlewares,
 } from '../../src/index.js';
-import context from '@aws-lambda-powertools/testing-utils/context';
 
 describe('Function: cleanupMiddlewares', () => {
   it('calls the cleanup function that are present', async () => {
diff --git a/packages/commons/tests/unit/fromBase64.test.ts b/packages/commons/tests/unit/fromBase64.test.ts
index 23ee84ecd3..6d2a2a965b 100644
--- a/packages/commons/tests/unit/fromBase64.test.ts
+++ b/packages/commons/tests/unit/fromBase64.test.ts
@@ -34,7 +34,7 @@ describe('Function: fromBase64', () => {
 
     // Assess
     expect(result).toThrow(TypeError);
-    expect(result).toThrow(`Incorrect padding on base64 string.`);
+    expect(result).toThrow('Incorrect padding on base64 string.');
   });
 
   it('throws a TypeError when the base64 string is invalid', () => {
@@ -46,7 +46,7 @@ describe('Function: fromBase64', () => {
 
     // Assess
     expect(result).toThrow(TypeError);
-    expect(result).toThrow(`Invalid base64 string.`);
+    expect(result).toThrow('Invalid base64 string.');
   });
 
   it('uses the provided encoding to create the Uint8Array', () => {
diff --git a/packages/commons/tests/unit/typeUtils.test.ts b/packages/commons/tests/unit/typeUtils.test.ts
index 7bb940f343..6b96d61882 100644
--- a/packages/commons/tests/unit/typeUtils.test.ts
+++ b/packages/commons/tests/unit/typeUtils.test.ts
@@ -4,15 +4,15 @@
  * @group unit/commons/typeUtils
  */
 import {
-  isRecord,
-  isTruthy,
-  isNullOrUndefined,
-  isString,
-  isNumber,
+  getType,
   isIntegerNumber,
   isNull,
-  getType,
+  isNullOrUndefined,
+  isNumber,
+  isRecord,
   isStrictEqual,
+  isString,
+  isTruthy,
 } from '../../src/index.js';
 
 describe('Functions: typeUtils', () => {
diff --git a/packages/commons/tsconfig.esm.json b/packages/commons/tsconfig.esm.json
index 123291b0cf..82486b64fa 100644
--- a/packages/commons/tsconfig.esm.json
+++ b/packages/commons/tsconfig.esm.json
@@ -6,7 +6,5 @@
     "rootDir": "./src",
     "tsBuildInfoFile": ".tsbuildinfo/esm.json"
   },
-  "include": [
-    "./src/**/*"
-  ]
-}
\ No newline at end of file
+  "include": ["./src/**/*"]
+}
diff --git a/packages/commons/tsconfig.json b/packages/commons/tsconfig.json
index 4836a14962..4923c4f6f4 100644
--- a/packages/commons/tsconfig.json
+++ b/packages/commons/tsconfig.json
@@ -1,11 +1,9 @@
 {
-    "extends": "../../tsconfig.json",
-    "compilerOptions": {
-        "outDir": "./lib/cjs/",
-        "rootDir": "./src",
-        "tsBuildInfoFile": ".tsbuildinfo/cjs.json"
-    },
-    "include": [
-        "./src/**/*"
-    ],
-}
\ No newline at end of file
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./lib/cjs/",
+    "rootDir": "./src",
+    "tsBuildInfoFile": ".tsbuildinfo/cjs.json"
+  },
+  "include": ["./src/**/*"]
+}
diff --git a/packages/commons/typedoc.json b/packages/commons/typedoc.json
index d3799003ef..60dfaa41cd 100644
--- a/packages/commons/typedoc.json
+++ b/packages/commons/typedoc.json
@@ -1,10 +1,5 @@
 {
-  "extends": [
-    "../../typedoc.base.json"
-  ],
-  "entryPoints": [
-    "./src/index.ts",
-    "./src/types/index.ts"
-  ],
+  "extends": ["../../typedoc.base.json"],
+  "entryPoints": ["./src/index.ts", "./src/types/index.ts"],
   "readme": "./README.md"
-}
\ No newline at end of file
+}