diff --git a/javascriptv3/biome.json b/javascriptv3/biome.json
index 01380d4621a..d23d6c62596 100644
--- a/javascriptv3/biome.json
+++ b/javascriptv3/biome.json
@@ -12,6 +12,7 @@
       "./example_code/medical-imaging/scenarios/health-image-sets/pixel-data-verification",
       "./example_code/kinesis/kinesis-cdk",
       "./example_code/medical-imaging/scenarios/health-image-sets/pixel-data-verification/openjphjs/openjphjs.js",
+      "./example_code/cross-services/textract-react",
       "**/dist"
     ]
   },
@@ -25,7 +26,12 @@
   "linter": {
     "enabled": true,
     "rules": {
-      "recommended": true
+      "recommended": true,
+      "correctness": {
+        "noUndeclaredVariables": {
+          "level": "error"
+        }
+      }
     }
   },
   "javascript": {
diff --git a/javascriptv3/example_code/bedrock-agent/tests/bedrock-agent-actions.integration.test.js b/javascriptv3/example_code/bedrock-agent/tests/bedrock-agent-actions.integration.test.js
index 61f262adc34..0e0382b14fe 100644
--- a/javascriptv3/example_code/bedrock-agent/tests/bedrock-agent-actions.integration.test.js
+++ b/javascriptv3/example_code/bedrock-agent/tests/bedrock-agent-actions.integration.test.js
@@ -5,7 +5,7 @@ import { afterAll, beforeAll, describe, expect, it } from "vitest";
 
 import { getRandomAlphanumericString } from "@aws-doc-sdk-examples/lib/utils/util-string.js";
 import { wait } from "@aws-doc-sdk-examples/lib/utils/util-timers.js";
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 
 import {
   CreateRoleCommand,
@@ -97,7 +97,7 @@ describe("create-list-get-delete", () => {
         }),
       );
     } catch (err) {
-      log(err);
+      logger.error(err);
       throw err;
     }
   });
@@ -152,7 +152,7 @@ describe("create-list-get-delete", () => {
       );
       await iam.send(new DeleteRoleCommand({ RoleName: agentRoleName }));
     } catch (err) {
-      log(err);
+      logger.error(err);
       throw err;
     }
   });
diff --git a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/admin-get-user-handler.js b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/admin-get-user-handler.js
index 31e884a4b28..b5acd941689 100644
--- a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/admin-get-user-handler.js
+++ b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/admin-get-user-handler.js
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import { getFirstEntry } from "@aws-doc-sdk-examples/lib/utils/util-csv.js";
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { adminGetUser } from "../../../actions/admin-get-user.js";
 import { FILE_USER_POOLS } from "./constants.js";
 
@@ -41,9 +41,9 @@ const adminGetUserHandler = async ([_cmd, username]) => {
 
     const user = await getUser(username);
 
-    log(formatUser(user));
+    logger.log(formatUser(user));
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/admin-initiate-auth-handler.js b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/admin-initiate-auth-handler.js
index e142346bf84..6a82d3fdc1e 100644
--- a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/admin-initiate-auth-handler.js
+++ b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/admin-initiate-auth-handler.js
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 /** snippet-start:[javascript.v3.cognito-idp.scenarios.basic.AdminInitiateAuthHandler] **/
 import qrcode from "qrcode-terminal";
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { adminInitiateAuth } from "../../../actions/admin-initiate-auth.js";
 import { associateSoftwareToken } from "../../../actions/associate-software-token.js";
 import { FILE_USER_POOLS } from "./constants.js";
@@ -61,7 +61,7 @@ const adminInitiateAuthHandler = async (commands) => {
     validateId(userPoolId);
     validateClient(clientId);
 
-    log("Signing in.");
+    logger.log("Signing in.");
     const { ChallengeName, Session } = await adminInitiateAuth({
       clientId,
       userPoolId,
@@ -70,16 +70,16 @@ const adminInitiateAuthHandler = async (commands) => {
     });
 
     if (ChallengeName === "MFA_SETUP") {
-      log("MFA setup is required.");
+      logger.log("MFA setup is required.");
       return handleMfaSetup(Session, username);
     }
 
     if (ChallengeName === "SOFTWARE_TOKEN_MFA") {
       handleSoftwareTokenMfa(Session);
-      log(`Run 'admin-respond-to-auth-challenge ${username} <totp>'`);
+      logger.log(`Run 'admin-respond-to-auth-challenge ${username} <totp>'`);
     }
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/admin-respond-to-auth-challenge-handler.js b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/admin-respond-to-auth-challenge-handler.js
index 5ab41beeffc..099c4d5528b 100644
--- a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/admin-respond-to-auth-challenge-handler.js
+++ b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/admin-respond-to-auth-challenge-handler.js
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 /** snippet-start:[javascript.v3.cognito-idp.scenarios.basic.AdminRespondToAuthChallengeHandler] **/
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { adminRespondToAuthChallenge } from "../../../actions/admin-respond-to-auth-challenge.js";
 import { getFirstEntry } from "@aws-doc-sdk-examples/lib/utils/util-csv.js";
 import { FILE_USER_POOLS } from "./constants.js";
@@ -47,9 +47,9 @@ const adminRespondToAuthChallengeHandler = async (commands) => {
 
     storeAccessToken(AuthenticationResult.AccessToken);
 
-    log("Successfully authenticated.");
+    logger.log("Successfully authenticated.");
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/clean-up-handler.js b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/clean-up-handler.js
index 3190ae364d8..38a3b6bd3b8 100644
--- a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/clean-up-handler.js
+++ b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/clean-up-handler.js
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import { deleteFiles } from "@aws-doc-sdk-examples/lib/utils/util-fs.js";
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { deleteUserPool } from "../../../actions/delete-user-pool.js";
 import { FILE_USER_POOLS } from "./constants.js";
 import { getFirstValuesFromEntries } from "@aws-doc-sdk-examples/lib/utils/util-csv.js";
@@ -12,7 +12,7 @@ import { getFirstValuesFromEntries } from "@aws-doc-sdk-examples/lib/utils/util-
  */
 function cleanUpUserPools(userPoolIds) {
   const deletePromises = userPoolIds.map((id) =>
-    deleteUserPool(id).catch((err) => log(err)),
+    deleteUserPool(id).catch((err) => logger.error(err)),
   );
   return Promise.all(deletePromises);
 }
@@ -26,24 +26,24 @@ function createUserPoolList(userPoolIds) {
 
 const cleanUpHandler = async () => {
   try {
-    log("Tidying up");
+    logger.log("Tidying up");
 
     /**
      * @type {string[]}
      */
     const userPoolIds = getFirstValuesFromEntries(FILE_USER_POOLS);
     if (userPoolIds[0].length > 0) {
-      log(`Deleting user pools: \n${createUserPoolList(userPoolIds)}`);
+      logger.log(`Deleting user pools: \n${createUserPoolList(userPoolIds)}`);
       await cleanUpUserPools(userPoolIds);
-      log("User pools deleted.");
+      logger.log("User pools deleted.");
     }
 
-    log("Removing temporary files.");
+    logger.log("Removing temporary files.");
     await deleteFiles([`./${FILE_USER_POOLS}.tmp`]);
 
-    log("All done ✨.");
+    logger.log("All done ✨.");
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/confirm-sign-up-handler.js b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/confirm-sign-up-handler.js
index 0d910b5fd10..d5874722162 100644
--- a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/confirm-sign-up-handler.js
+++ b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/confirm-sign-up-handler.js
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 /** snippet-start:[javascript.v3.cognito-idp.scenarios.basic.ConfirmSignUpHandler] **/
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { confirmSignUp } from "../../../actions/confirm-sign-up.js";
 import { FILE_USER_POOLS } from "./constants.js";
 import { getSecondValuesFromEntries } from "@aws-doc-sdk-examples/lib/utils/util-csv.js";
@@ -43,13 +43,13 @@ const confirmSignUpHandler = async (commands) => {
     const values = getSecondValuesFromEntries(FILE_USER_POOLS);
     const clientId = values[0];
     validateClient(clientId);
-    log("Confirming user.");
+    logger.log("Confirming user.");
     await confirmSignUp({ clientId, username, code });
-    log(
+    logger.log(
       `User confirmed. Run 'admin-initiate-auth ${username} <password>' to sign in.`,
     );
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/create-user-pool-handler.js b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/create-user-pool-handler.js
index 93cd6a073d1..33fca4525b9 100644
--- a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/create-user-pool-handler.js
+++ b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/create-user-pool-handler.js
@@ -1,7 +1,7 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { getTmp, setTmp } from "@aws-doc-sdk-examples/lib/utils/util-fs.js";
 import { createUserPool } from "../../../actions/create-user-pool.js";
 import { FILE_USER_POOLS, NAME_CLIENT } from "./constants.js";
@@ -36,26 +36,28 @@ const createUserPoolHandler = async (commands) => {
   try {
     validateUserPool(poolName);
 
-    log(`Creating user pool: ${poolName}`);
+    logger.log(`Creating user pool: ${poolName}`);
 
     const {
       UserPool: { Id },
     } = await createUserPool(poolName);
-    log("User pool created.");
+    logger.log("User pool created.");
 
-    log("Configuring user pool to only allow MFA via an authenticator app.");
+    logger.log(
+      "Configuring user pool to only allow MFA via an authenticator app.",
+    );
     await setUserPoolMfaConfig(Id);
-    log("MFA configured.");
+    logger.log("MFA configured.");
 
-    log(`Creating user pool client: ${NAME_CLIENT}`);
+    logger.log(`Creating user pool client: ${NAME_CLIENT}`);
     const {
       UserPoolClient: { ClientId },
     } = await createUserPoolClient(NAME_CLIENT, Id);
-    log("Client created.");
+    logger.log("Client created.");
 
     storeUserPoolMeta(Id, ClientId, poolName);
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/list-users-handler.js b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/list-users-handler.js
index 591f0bc8d5e..aa5a3d88474 100644
--- a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/list-users-handler.js
+++ b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/list-users-handler.js
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import { getFirstEntry } from "@aws-doc-sdk-examples/lib/utils/util-csv.js";
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { listUsers } from "../../../actions/list-users.js";
 import { FILE_USER_POOLS } from "./constants.js";
 
@@ -27,9 +27,9 @@ const listUsersHandler = async () => {
   try {
     const response = await getUsers();
 
-    log(formatUsers(response.Users));
+    logger.log(formatUsers(response.Users));
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/resend-confirmation-code-handler.js b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/resend-confirmation-code-handler.js
index 0980c8d4a1a..9e9920e1fc8 100644
--- a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/resend-confirmation-code-handler.js
+++ b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/resend-confirmation-code-handler.js
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import { getFirstEntry } from "@aws-doc-sdk-examples/lib/utils/util-csv.js";
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { resendConfirmationCode } from "../../../actions/resend-confirmation-code.js";
 import { FILE_USER_POOLS } from "./constants.js";
 
@@ -10,9 +10,9 @@ const resendConfirmationCodeHandler = async ([_cmd, username]) => {
   try {
     const [_userPoolId, clientId] = getFirstEntry(FILE_USER_POOLS);
     await resendConfirmationCode({ clientId, username });
-    log("Confirmation code sent.");
+    logger.log("Confirmation code sent.");
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/sign-up-handler.js b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/sign-up-handler.js
index 9e94964ecaa..466c54d6ea7 100644
--- a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/sign-up-handler.js
+++ b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/sign-up-handler.js
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 /** snippet-start:[javascript.v3.cognito-idp.scenarios.basic.SignUpHandler] **/
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { signUp } from "../../../actions/sign-up.js";
 import { FILE_USER_POOLS } from "./constants.js";
 import { getSecondValuesFromEntries } from "@aws-doc-sdk-examples/lib/utils/util-csv.js";
@@ -34,12 +34,14 @@ const signUpHandler = async (commands) => {
     const values = getSecondValuesFromEntries(FILE_USER_POOLS);
     const clientId = values[0];
     validateClient(clientId);
-    log("Signing up.");
+    logger.log("Signing up.");
     await signUp({ clientId, username, password, email });
-    log(`Signed up. A confirmation email has been sent to: ${email}.`);
-    log(`Run 'confirm-sign-up ${username} <code>' to confirm your account.`);
+    logger.log(`Signed up. A confirmation email has been sent to: ${email}.`);
+    logger.log(
+      `Run 'confirm-sign-up ${username} <code>' to confirm your account.`,
+    );
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/verify-software-token-handler.js b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/verify-software-token-handler.js
index 87682bd37a6..63dfafd8d74 100644
--- a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/verify-software-token-handler.js
+++ b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/command-handlers/verify-software-token-handler.js
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 /** snippet-start:[javascript.v3.cognito-idp.scenarios.basic.VerifySoftwareTokenHandler] **/
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { verifySoftwareToken } from "../../../actions/verify-software-token.js";
 
 const validateTotp = (totp) => {
@@ -18,11 +18,11 @@ const verifySoftwareTokenHandler = async (commands) => {
   try {
     validateTotp(totp);
 
-    log("Verifying TOTP.");
+    logger.log("Verifying TOTP.");
     await verifySoftwareToken(totp);
-    log("TOTP Verified. Run 'admin-initiate-auth' again to sign-in.");
+    logger.log("TOTP Verified. Run 'admin-initiate-auth' again to sign-in.");
   } catch (err) {
-    console.log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/index.js b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/index.js
index 9320c34366c..3aeb32ff66f 100644
--- a/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/index.js
+++ b/javascriptv3/example_code/cognito-identity-provider/scenarios/basic/index.js
@@ -4,7 +4,6 @@ import { createInterface } from "node:readline";
 import { stdin as input, stdout as output } from "node:process";
 
 import { readCommands } from "@aws-doc-sdk-examples/lib/cmd-runner.js";
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { startsWith } from "@aws-doc-sdk-examples/lib/utils/util-array.js";
 
 import { createUserPoolHandler } from "./command-handlers/create-user-pool-handler.js";
@@ -61,7 +60,7 @@ const help = `
  `;
 
 const handlers = [
-  [startsWith(["help"]), () => log(help)],
+  [startsWith(["help"]), () => console.log(help)],
   [startsWith(["create-user-pool"]), createUserPoolHandler],
   [startsWith(["sign-up"]), signUpHandler],
   [startsWith(["resend-confirmation-code"]), resendConfirmationCodeHandler],
diff --git a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/handlers/get-items-handler.ts b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/handlers/get-items-handler.ts
index 8b0292648f8..6a77ec901ab 100644
--- a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/handlers/get-items-handler.ts
+++ b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/handlers/get-items-handler.ts
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import type { Handler } from "src/types/handler.js";
+import type { DBRecords } from "src/types/db-record.js";
 import { command as getAllItemsCommand } from "../statement-commands/get-all-items.js";
 import { command as getArchivedItemsCommand } from "../statement-commands/get-archived-items.js";
 import { command as getActiveItemsCommand } from "../statement-commands/get-active-items.js";
diff --git a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/handlers/parse-item.ts b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/handlers/parse-item.ts
index e39f954cb55..ec28ec46792 100644
--- a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/handlers/parse-item.ts
+++ b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/handlers/parse-item.ts
@@ -1,6 +1,7 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 import type { Item } from "../types/item.js";
+import type { DBRecord } from "../types/db-record.js";
 
 const parseItem = (record: DBRecord): Item => {
   return {
diff --git a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/handlers/post-items-report-handler.ts b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/handlers/post-items-report-handler.ts
index cf88a576ba4..1de17cca76c 100644
--- a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/handlers/post-items-report-handler.ts
+++ b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/handlers/post-items-report-handler.ts
@@ -5,6 +5,7 @@ import { SendRawEmailCommand } from "@aws-sdk/client-ses";
 import { createMimeMessage, type TextFormat } from "mimetext";
 import { format } from "prettier";
 import type { Handler } from "src/types/handler.js";
+import type { DBRecords } from "src/types/db-record.js";
 import { command as getActiveItemsCommand } from "../statement-commands/get-active-items.js";
 
 const makeCsv = (records: DBRecords) => {
diff --git a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/middleware/validate-db.ts b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/middleware/validate-db.ts
index efe50e8a43f..a106fa26efb 100644
--- a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/middleware/validate-db.ts
+++ b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/middleware/validate-db.ts
@@ -5,6 +5,7 @@ import type { RequestHandler } from "express";
 import { command as createTableCommand } from "../statement-commands/create-table.js";
 import { command as getAllItemsCommand } from "../statement-commands/get-all-items.js";
 import type { Handler } from "src/types/handler.js";
+import type { Sendable } from "src/types/sendable.js";
 
 const errorCodes = {
   TABLE_NOT_FOUND: "Error code: 1146",
diff --git a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/db-record.d.ts b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/db-record.d.ts
deleted file mode 100644
index 06df8f6dad3..00000000000
--- a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/db-record.d.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
-// SPDX-License-Identifier: Apache-2.0
-declare type DBRecordValue = Record<string, string | number>;
-declare type DBRecord = DBRecordValue[];
-declare type DBRecords = DBRecord[];
diff --git a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/db-record.ts b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/db-record.ts
new file mode 100644
index 00000000000..eac42191733
--- /dev/null
+++ b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/db-record.ts
@@ -0,0 +1,6 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+export type DBRecordValue = Record<string, string | number>;
+export type DBRecord = DBRecordValue[];
+export type DBRecords = DBRecord[];
diff --git a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/handler.d.ts b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/handler.ts
similarity index 82%
rename from javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/handler.d.ts
rename to javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/handler.ts
index 7bcf2ddc365..f736237c8c9 100644
--- a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/handler.d.ts
+++ b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/handler.ts
@@ -1,8 +1,10 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
+
 import type { RequestHandler } from "express";
+import type { Sendable } from "./sendable.js";
 
-declare type Handler = {
+export type Handler = {
   withClient: ({
     rdsDataClient,
     sesClient,
diff --git a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/item.d.ts b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/item.ts
similarity index 94%
rename from javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/item.d.ts
rename to javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/item.ts
index 3544cd094fb..25ae57cd064 100644
--- a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/item.d.ts
+++ b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/item.ts
@@ -1,6 +1,7 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
-declare type Item = {
+
+export type Item = {
   /**
    * A UUID that is generated by the middleware.
    */
@@ -31,5 +32,3 @@ declare type Item = {
    */
   archived: boolean;
 };
-
-export type { Item };
diff --git a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/sendable.d.ts b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/sendable.ts
similarity index 84%
rename from javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/sendable.d.ts
rename to javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/sendable.ts
index 3fe0d16c6d2..8938b37e934 100644
--- a/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/sendable.d.ts
+++ b/javascriptv3/example_code/cross-services/aurora-serverless-app/src/types/sendable.ts
@@ -1,6 +1,6 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
-declare interface Sendable {
+export interface Sendable {
   send: <R>(command: unknown) => Promise<R>;
 }
diff --git a/javascriptv3/example_code/cross-services/aurora-serverless-app/tests/parse-item.unit.test.ts b/javascriptv3/example_code/cross-services/aurora-serverless-app/tests/parse-item.unit.test.ts
index 0e6f14bfbc6..659dc0df219 100644
--- a/javascriptv3/example_code/cross-services/aurora-serverless-app/tests/parse-item.unit.test.ts
+++ b/javascriptv3/example_code/cross-services/aurora-serverless-app/tests/parse-item.unit.test.ts
@@ -1,8 +1,10 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
+
 import { describe, it, expect } from "vitest";
 import type { Item } from "src/types/item.js";
 import { parseItem } from "../src/handlers/parse-item.js";
+import type { DBRecord } from "../src/types/db-record.js";
 
 describe("parseItem", () => {
   it("should convert a DBRecord into an Item", () => {
diff --git a/javascriptv3/example_code/cross-services/aurora-serverless-app/tests/validate-db.unit.test.ts b/javascriptv3/example_code/cross-services/aurora-serverless-app/tests/validate-db.unit.test.ts
index 0fd75d8bef6..37265ea20f2 100644
--- a/javascriptv3/example_code/cross-services/aurora-serverless-app/tests/validate-db.unit.test.ts
+++ b/javascriptv3/example_code/cross-services/aurora-serverless-app/tests/validate-db.unit.test.ts
@@ -3,6 +3,7 @@
 import { describe, expect, it, vi } from "vitest";
 import type { NextFunction, Request, Response } from "express";
 import { errorCodes, validateDb } from "../src/middleware/validate-db.js";
+import type { Sendable } from "../src/types/sendable.ts";
 
 describe("validate-db", () => {
   describe("generated handler", () => {
diff --git a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/clean-up-handler.js b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/clean-up-handler.js
index 64bda8684f3..7dac95704fc 100644
--- a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/clean-up-handler.js
+++ b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/clean-up-handler.js
@@ -1,7 +1,7 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 import { readdirSync } from "node:fs";
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import {
   deleteFiles,
   dirnameFromMetaUrl,
@@ -38,7 +38,7 @@ const getTmpFiles = getFilesByExt(".tmp");
  * @param {string[]} functionNames
  */
 const cleanUpFunctions = (functionNames) =>
-  Promise.all(functionNames.map((n) => deleteFunction(n).catch(log)));
+  Promise.all(functionNames.map((n) => deleteFunction(n).catch(logger.error)));
 
 /**
  * @param {string[]} tmpFileNames
@@ -47,9 +47,9 @@ const cleanUpTmpFiles = (tmpFileNames) =>
   deleteFiles(tmpFileNames.map((tmpFileName) => `./${tmpFileName}`));
 
 const cleanUpRolePolicy = (policyArn, roleName) =>
-  detachRolePolicy(policyArn, roleName).catch(log);
+  detachRolePolicy(policyArn, roleName).catch(logger.error);
 
-const cleanUpRole = (roleName) => deleteRole(roleName).catch(log);
+const cleanUpRole = (roleName) => deleteRole(roleName).catch(logger.error);
 
 const cleanUpHandler = async () => {
   const zippedFuncs = getZipFiles(`${dirname}../../../functions/`);
@@ -57,26 +57,26 @@ const cleanUpHandler = async () => {
   const funcNames = zippedFuncs.map((zip) => zip.split(".zip")[0]);
 
   try {
-    log("Tidying up");
+    logger.log("Tidying up");
 
-    log("Deleting Lambda functions.");
+    logger.log("Deleting Lambda functions.");
     await cleanUpFunctions(funcNames);
 
-    log("Removing policy from role created during initialization.");
+    logger.log("Removing policy from role created during initialization.");
     await cleanUpRolePolicy(
       ARN_POLICY_LAMBDA_BASIC_EXECUTION,
       NAME_ROLE_LAMBDA,
     );
 
-    log("Deleting role created during initialization.");
+    logger.log("Deleting role created during initialization.");
     await cleanUpRole(NAME_ROLE_LAMBDA);
 
-    log("Removing temporary files.");
+    logger.log("Removing temporary files.");
     cleanUpTmpFiles(tmpFiles);
 
-    log("All done ✨.");
+    logger.log("All done ✨.");
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/create-function-handler.js b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/create-function-handler.js
index 5a57df22e98..43b9e4f558e 100644
--- a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/create-function-handler.js
+++ b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/create-function-handler.js
@@ -1,6 +1,6 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { getTmp } from "@aws-doc-sdk-examples/lib/utils/util-fs.js";
 import { createFunction } from "../../../actions/create-function.js";
 
@@ -12,18 +12,20 @@ const createFunctionHandler = async (commands) => {
   const roleArn = getTmp("roleArn");
 
   if (!(funcName && roleArn)) {
-    log(
+    logger.log(
       "Either the function name or .tmp file is missing. Did you initialize?",
     );
     return;
   }
 
   try {
-    log(`Asking Lambda to create ${funcName}...`);
+    logger.log(`Asking Lambda to create ${funcName}...`);
     await createFunction(funcName, roleArn);
-    log(`Lambda is creating ${funcName}. Check the AWS Management Console.`);
+    logger.log(
+      `Lambda is creating ${funcName}. Check the AWS Management Console.`,
+    );
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/initialize-handler.js b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/initialize-handler.js
index 0e2e0f2ce72..21f0a602f5a 100644
--- a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/initialize-handler.js
+++ b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/initialize-handler.js
@@ -1,6 +1,6 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { getTmp, setTmp } from "@aws-doc-sdk-examples/lib/utils/util-fs.js";
 import { attachRolePolicy } from "../../../../iam/actions/attach-role-policy.js";
 import { createRole } from "../../../../iam/actions/create-role.js";
@@ -12,31 +12,31 @@ import {
 const initializeHandler = async () => {
   const tmp = getTmp("roleArn");
   if (tmp) {
-    log("You've already initialized.");
+    logger.log("You've already initialized.");
     return;
   }
 
   try {
     /** snippet-start:[javascript.v3.lambda.scenarios.basic.CreateRole] */
-    log(`Creating role (${NAME_ROLE_LAMBDA})...`);
+    logger.log(`Creating role (${NAME_ROLE_LAMBDA})...`);
     const response = await createRole(NAME_ROLE_LAMBDA);
     /** snippet-end:[javascript.v3.lambda.scenarios.basic.CreateRole] */
 
-    log(
+    logger.log(
       `${NAME_ROLE_LAMBDA} created successfully. Saving Role ARN for later use.`,
     );
     setTmp("roleArn", response.Role ? response.Role.Arn : null);
-    log(
+    logger.log(
       `Attaching policy ${ARN_POLICY_LAMBDA_BASIC_EXECUTION} to ${NAME_ROLE_LAMBDA}...`,
     );
 
     await attachRolePolicy(ARN_POLICY_LAMBDA_BASIC_EXECUTION, NAME_ROLE_LAMBDA);
 
-    log(
+    logger.log(
       `${ARN_POLICY_LAMBDA_BASIC_EXECUTION} successfully attached to ${NAME_ROLE_LAMBDA}`,
     );
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/invoke-handler.js b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/invoke-handler.js
index 5a31bd37499..47f13948462 100644
--- a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/invoke-handler.js
+++ b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/invoke-handler.js
@@ -1,29 +1,29 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { invoke } from "../../../actions/invoke.js";
 
 const invokeHandler = async (commands) => {
   const [_, funcName, ...funcArgs] = commands;
 
   if (!funcName) {
-    log(
+    logger.log(
       `Function name is missing. It must be provided as an argument to the 'invoke' command.`,
     );
     return;
   }
 
   try {
-    log(
+    logger.log(
       `Invoking ${funcName} with ${typeof funcArgs}(${JSON.stringify(
         funcArgs,
       )})...`,
     );
     const { logs, result } = await invoke(funcName, funcArgs);
-    log(`${funcName} invoked successfully. Result was: ${result}`);
-    log(`Logs: ${logs}`);
+    logger.log(`${funcName} invoked successfully. Result was: ${result}`);
+    logger.log(`Logs: ${logs}`);
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/list-functions-handler.js b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/list-functions-handler.js
index 357d9afd78d..a023dec69fe 100644
--- a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/list-functions-handler.js
+++ b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/list-functions-handler.js
@@ -1,6 +1,6 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { listFunctions } from "../../../actions/list-functions.js";
 
 const makeListItem = (s) => `• ${s}`;
@@ -21,13 +21,13 @@ const getFunctionNames = (response) =>
 
 const listFunctionsHandler = async () => {
   try {
-    log("Getting function list...");
+    logger.log("Getting function list...");
     const response = await listFunctions();
 
     const functionList = getFunctionNames(response);
-    log(functionList);
+    logger.log(functionList);
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/update-function-code-handler.js b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/update-function-code-handler.js
index ea27ff99f63..3181a8d07e5 100644
--- a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/update-function-code-handler.js
+++ b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/update-function-code-handler.js
@@ -1,6 +1,6 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { updateFunctionCode } from "../../../actions/update-function-code.js";
 
 const updateFunctionHandler = async (commands) => {
@@ -8,11 +8,11 @@ const updateFunctionHandler = async (commands) => {
   const replacementFunc = funcCode || funcName;
 
   try {
-    log(`Updating ${funcName} with code from ${replacementFunc}...`);
+    logger.log(`Updating ${funcName} with code from ${replacementFunc}...`);
     await updateFunctionCode(funcName, replacementFunc);
-    log(`${funcName} updated successfully.`);
+    logger.log(`${funcName} updated successfully.`);
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/update-function-configuration-handler.js b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/update-function-configuration-handler.js
index 3d81f7309fc..982a041d93d 100644
--- a/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/update-function-configuration-handler.js
+++ b/javascriptv3/example_code/lambda/scenarios/basic/command-handlers/update-function-configuration-handler.js
@@ -1,16 +1,16 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { updateFunctionConfiguration } from "../../../actions/update-function-configuration.js";
 
 const updateFunctionConfigurationHandler = async (commands) => {
   const [_, funcName] = commands;
   try {
-    log(`Updating configuration for ${funcName}...`);
+    logger.log(`Updating configuration for ${funcName}...`);
     await updateFunctionConfiguration(funcName);
-    log(`Configuration for ${funcName} updated.`);
+    logger.log(`Configuration for ${funcName} updated.`);
   } catch (err) {
-    log(err);
+    logger.error(err);
   }
 };
 
diff --git a/javascriptv3/example_code/lambda/scenarios/basic/index.js b/javascriptv3/example_code/lambda/scenarios/basic/index.js
index 533b76b9f14..75e467a93e5 100644
--- a/javascriptv3/example_code/lambda/scenarios/basic/index.js
+++ b/javascriptv3/example_code/lambda/scenarios/basic/index.js
@@ -4,7 +4,6 @@ import { createInterface } from "node:readline";
 import { stdin as input, stdout as output } from "node:process";
 
 import { readCommands } from "@aws-doc-sdk-examples/lib/cmd-runner.js";
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { startsWith } from "@aws-doc-sdk-examples/lib/utils/util-array.js";
 
 import { initializeHandler } from "./command-handlers/initialize-handler.js";
@@ -49,7 +48,7 @@ usage: <command> [<args>]
 `;
 
 const handlers = [
-  [startsWith(["help"]), () => log(help)],
+  [startsWith(["help"]), () => console.log(help)],
   [startsWith(["initialize"]), initializeHandler],
   [startsWith(["create-function"]), createFunctionHandler],
   [startsWith(["update-function-code"]), updateFunctionHandler],
diff --git a/javascriptv3/example_code/lambda/tests/lambda-actions.integration.test.js b/javascriptv3/example_code/lambda/tests/lambda-actions.integration.test.js
index 09c222c6e00..79b8ad13dcc 100644
--- a/javascriptv3/example_code/lambda/tests/lambda-actions.integration.test.js
+++ b/javascriptv3/example_code/lambda/tests/lambda-actions.integration.test.js
@@ -10,7 +10,7 @@ import {
   waitUntilRoleExists,
 } from "@aws-sdk/client-iam";
 
-import { log } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import { logger } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 import { retry } from "@aws-doc-sdk-examples/lib/utils/util-timers.js";
 
 import {
@@ -66,7 +66,7 @@ describe("Creating, getting, invoking, listing, updating, and deleting", () => {
       });
       await iamClient.send(attachRolePolicyCommand);
     } catch (err) {
-      log(err);
+      logger.error(err);
       throw err;
     }
   });
@@ -81,7 +81,7 @@ describe("Creating, getting, invoking, listing, updating, and deleting", () => {
       const deleteRoleCommand = new DeleteRoleCommand({ RoleName: roleName });
       await iamClient.send(deleteRoleCommand);
     } catch (err) {
-      log(err);
+      logger.error(err);
       throw err;
     }
 
@@ -90,7 +90,7 @@ describe("Creating, getting, invoking, listing, updating, and deleting", () => {
       // before the deletion step.
       await deleteFunction(funcName);
     } catch (err) {
-      log(err);
+      logger.error(err);
     }
   });
 
diff --git a/javascriptv3/example_code/libs/cmd-runner.js b/javascriptv3/example_code/libs/cmd-runner.js
index 807995b0b78..6cc44430e00 100644
--- a/javascriptv3/example_code/libs/cmd-runner.js
+++ b/javascriptv3/example_code/libs/cmd-runner.js
@@ -1,7 +1,7 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 import { startsWith } from "./utils/util-array.js";
-import { log } from "./utils/util-log.js";
+import { logger } from "./utils/util-log.js";
 
 /**
  * @typedef {(...args: unknown[]) => void} HandlerFn
@@ -42,7 +42,7 @@ function readCommands({ reader, handlers }) {
       return reader.close();
     }
 
-    return log("Command not recognized.");
+    return logger.error("Command not recognized.");
   });
 }
 
diff --git a/javascriptv3/example_code/libs/tests/util-log.unit.test.js b/javascriptv3/example_code/libs/tests/util-log.unit.test.js
deleted file mode 100644
index 75f4b3750d4..00000000000
--- a/javascriptv3/example_code/libs/tests/util-log.unit.test.js
+++ /dev/null
@@ -1,10 +0,0 @@
-// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
-// SPDX-License-Identifier: Apache-2.0
-import { it, describe, expect } from "vitest";
-import { log } from "../utils/util-log";
-
-describe("log", () => {
-  it("should parse a string from an object", () => {
-    expect(log({})).toEqual("{}");
-  });
-});
diff --git a/javascriptv3/example_code/libs/utils/util-fs.js b/javascriptv3/example_code/libs/utils/util-fs.js
index f290e3f3b38..1e5cb16338e 100644
--- a/javascriptv3/example_code/libs/utils/util-fs.js
+++ b/javascriptv3/example_code/libs/utils/util-fs.js
@@ -12,7 +12,7 @@ import {
 } from "node:fs";
 import archiver from "archiver";
 import { fileURLToPath } from "node:url";
-import { log } from "./util-log.js";
+import { logger } from "./util-log.js";
 import { splitMapTrim } from "./util-string.js";
 
 /**
@@ -40,12 +40,12 @@ export const setTmp = (name, data) =>
   writeFileSync(`./${name}.tmp`, data, { encoding: "utf-8" });
 
 export const handleZipWarning = (resolve) => (w) => {
-  log(w);
+  logger.log(w);
   resolve();
 };
 
 export const handleZipEnd = (resolve, path) => async () => {
-  log("Zipped successfully.");
+  logger.log("Zipped successfully.");
   const buffer = await readFile(path);
   resolve(buffer);
 };
@@ -72,7 +72,7 @@ export const zip = (inputPath) =>
       return;
     }
     const archive = archiver("zip");
-    log(`Zipping ${inputPath}...`);
+    logger.log(`Zipping ${inputPath}...`);
 
     const output = createWriteStream(`${inputPath}.zip`);
     output.on("close", handleZipEnd(resolve, `${inputPath}.zip`));
diff --git a/javascriptv3/example_code/libs/utils/util-log.js b/javascriptv3/example_code/libs/utils/util-log.js
index fd24cdbe9d1..8c2de93421a 100644
--- a/javascriptv3/example_code/libs/utils/util-log.js
+++ b/javascriptv3/example_code/libs/utils/util-log.js
@@ -10,6 +10,19 @@ export const log = (str) => {
   return parsed;
 };
 
+export const logger = {
+  log: console.log,
+  warn: (message) => {
+    console.warn(`[WARNING] ${message}`);
+  },
+  debug: (message) => {
+    console.debug(`[DEBUG ${new Date().toISOString()}] ${message}`);
+  },
+  error: (message) => {
+    console.error(`[ERROR] ${message}`);
+  },
+};
+
 export class ProgressBar {
   /**
    * Create a progress bar that will display in the console.
diff --git a/javascriptv3/example_code/s3/scenarios/multipart-upload.js b/javascriptv3/example_code/s3/scenarios/multipart-upload.js
index 9bfdc2876d8..15c96f20077 100644
--- a/javascriptv3/example_code/s3/scenarios/multipart-upload.js
+++ b/javascriptv3/example_code/s3/scenarios/multipart-upload.js
@@ -5,7 +5,10 @@
 import { S3Client } from "@aws-sdk/client-s3";
 import { Upload } from "@aws-sdk/lib-storage";
 
-import { ProgressBar } from "@aws-doc-sdk-examples/lib/utils/util-log.js";
+import {
+  ProgressBar,
+  logger,
+} from "@aws-doc-sdk-examples/lib/utils/util-log.js";
 
 const twentyFiveMB = 25 * 1024 * 1024;
 
@@ -43,7 +46,7 @@ export const main = async ({ bucketName, key }) => {
     await upload.done();
   } catch (caught) {
     if (caught instanceof Error && caught.name === "AbortError") {
-      console.error(`Multipart upload was aborted. ${caught.message}`);
+      logger.error(`Multipart upload was aborted. ${caught.message}`);
     } else {
       throw caught;
     }
@@ -80,6 +83,6 @@ if (isMain(import.meta.url)) {
   if (!errors) {
     main(results.values);
   } else {
-    console.error(errors.join("\n"));
+    logger.error(errors.join("\n"));
   }
 }
diff --git a/javascriptv3/example_code/ssm/scenarios/ssm-basics.js b/javascriptv3/example_code/ssm/scenarios/ssm-basics.js
index 83f33594232..a7f54e6cd65 100644
--- a/javascriptv3/example_code/ssm/scenarios/ssm-basics.js
+++ b/javascriptv3/example_code/ssm/scenarios/ssm-basics.js
@@ -162,7 +162,7 @@ const sdkCreateSSMDoc = new ScenarioAction(
         }),
       );
     } catch (caught) {
-      console.log(`Exception type: (${typeof e})`);
+      console.log(`Exception type: (${typeof caught})`);
       if (caught instanceof DocumentAlreadyExists) {
         console.log("Document already exists. Continuing...\n");
       } else {