diff --git a/packages/credential-providers/src/fromTemporaryCredentials.base.ts b/packages/credential-providers/src/fromTemporaryCredentials.base.ts
new file mode 100644
index 000000000000..28c92364070d
--- /dev/null
+++ b/packages/credential-providers/src/fromTemporaryCredentials.base.ts
@@ -0,0 +1,75 @@
+import type { AssumeRoleCommandInput, STSClient, STSClientConfig } from "@aws-sdk/nested-clients/sts";
+import type {
+  AwsIdentityProperties,
+  CredentialProviderOptions,
+  RuntimeConfigAwsCredentialIdentityProvider,
+} from "@aws-sdk/types";
+import { CredentialsProviderError } from "@smithy/property-provider";
+import { AwsCredentialIdentity, AwsCredentialIdentityProvider, Pluggable } from "@smithy/types";
+
+export interface FromTemporaryCredentialsOptions extends CredentialProviderOptions {
+  params: Omit<AssumeRoleCommandInput, "RoleSessionName"> & { RoleSessionName?: string };
+  masterCredentials?: AwsCredentialIdentity | AwsCredentialIdentityProvider;
+  clientConfig?: STSClientConfig;
+  clientPlugins?: Pluggable<any, any>[];
+  mfaCodeProvider?: (mfaSerial: string) => Promise<string>;
+}
+
+export const fromTemporaryCredentials = (
+  options: FromTemporaryCredentialsOptions,
+  credentialDefaultProvider?: () => AwsCredentialIdentityProvider
+): RuntimeConfigAwsCredentialIdentityProvider => {
+  let stsClient: STSClient;
+  return async (awsIdentityProperties: AwsIdentityProperties = {}): Promise<AwsCredentialIdentity> => {
+    options.logger?.debug("@aws-sdk/credential-providers - fromTemporaryCredentials (STS)");
+    const params = { ...options.params, RoleSessionName: options.params.RoleSessionName ?? "aws-sdk-js-" + Date.now() };
+    if (params?.SerialNumber) {
+      if (!options.mfaCodeProvider) {
+        throw new CredentialsProviderError(
+          `Temporary credential requires multi-factor authentication, but no MFA code callback was provided.`,
+          {
+            tryNextLink: false,
+            logger: options.logger,
+          }
+        );
+      }
+      params.TokenCode = await options.mfaCodeProvider(params?.SerialNumber);
+    }
+
+    const { AssumeRoleCommand, STSClient } = await import("./loadSts");
+
+    if (!stsClient) {
+      const defaultCredentialsOrError =
+        typeof credentialDefaultProvider === "function" ? credentialDefaultProvider() : undefined;
+
+      const { callerClientConfig } = awsIdentityProperties;
+      stsClient = new STSClient({
+        ...options.clientConfig,
+        credentials:
+          options.masterCredentials ??
+          options.clientConfig?.credentials ??
+          callerClientConfig?.credentialDefaultProvider?.() ??
+          defaultCredentialsOrError,
+      });
+    }
+    if (options.clientPlugins) {
+      for (const plugin of options.clientPlugins) {
+        stsClient.middlewareStack.use(plugin);
+      }
+    }
+    const { Credentials } = await stsClient.send(new AssumeRoleCommand(params));
+    if (!Credentials || !Credentials.AccessKeyId || !Credentials.SecretAccessKey) {
+      throw new CredentialsProviderError(`Invalid response from STS.assumeRole call with role ${params.RoleArn}`, {
+        logger: options.logger,
+      });
+    }
+    return {
+      accessKeyId: Credentials.AccessKeyId,
+      secretAccessKey: Credentials.SecretAccessKey,
+      sessionToken: Credentials.SessionToken,
+      expiration: Credentials.Expiration,
+      // TODO(credentialScope): access normally when shape is updated.
+      credentialScope: (Credentials as any).CredentialScope,
+    };
+  };
+};
diff --git a/packages/credential-providers/src/fromTemporaryCredentials.browser.ts b/packages/credential-providers/src/fromTemporaryCredentials.browser.ts
index 28c92364070d..9bcd22de9426 100644
--- a/packages/credential-providers/src/fromTemporaryCredentials.browser.ts
+++ b/packages/credential-providers/src/fromTemporaryCredentials.browser.ts
@@ -1,75 +1 @@
-import type { AssumeRoleCommandInput, STSClient, STSClientConfig } from "@aws-sdk/nested-clients/sts";
-import type {
-  AwsIdentityProperties,
-  CredentialProviderOptions,
-  RuntimeConfigAwsCredentialIdentityProvider,
-} from "@aws-sdk/types";
-import { CredentialsProviderError } from "@smithy/property-provider";
-import { AwsCredentialIdentity, AwsCredentialIdentityProvider, Pluggable } from "@smithy/types";
-
-export interface FromTemporaryCredentialsOptions extends CredentialProviderOptions {
-  params: Omit<AssumeRoleCommandInput, "RoleSessionName"> & { RoleSessionName?: string };
-  masterCredentials?: AwsCredentialIdentity | AwsCredentialIdentityProvider;
-  clientConfig?: STSClientConfig;
-  clientPlugins?: Pluggable<any, any>[];
-  mfaCodeProvider?: (mfaSerial: string) => Promise<string>;
-}
-
-export const fromTemporaryCredentials = (
-  options: FromTemporaryCredentialsOptions,
-  credentialDefaultProvider?: () => AwsCredentialIdentityProvider
-): RuntimeConfigAwsCredentialIdentityProvider => {
-  let stsClient: STSClient;
-  return async (awsIdentityProperties: AwsIdentityProperties = {}): Promise<AwsCredentialIdentity> => {
-    options.logger?.debug("@aws-sdk/credential-providers - fromTemporaryCredentials (STS)");
-    const params = { ...options.params, RoleSessionName: options.params.RoleSessionName ?? "aws-sdk-js-" + Date.now() };
-    if (params?.SerialNumber) {
-      if (!options.mfaCodeProvider) {
-        throw new CredentialsProviderError(
-          `Temporary credential requires multi-factor authentication, but no MFA code callback was provided.`,
-          {
-            tryNextLink: false,
-            logger: options.logger,
-          }
-        );
-      }
-      params.TokenCode = await options.mfaCodeProvider(params?.SerialNumber);
-    }
-
-    const { AssumeRoleCommand, STSClient } = await import("./loadSts");
-
-    if (!stsClient) {
-      const defaultCredentialsOrError =
-        typeof credentialDefaultProvider === "function" ? credentialDefaultProvider() : undefined;
-
-      const { callerClientConfig } = awsIdentityProperties;
-      stsClient = new STSClient({
-        ...options.clientConfig,
-        credentials:
-          options.masterCredentials ??
-          options.clientConfig?.credentials ??
-          callerClientConfig?.credentialDefaultProvider?.() ??
-          defaultCredentialsOrError,
-      });
-    }
-    if (options.clientPlugins) {
-      for (const plugin of options.clientPlugins) {
-        stsClient.middlewareStack.use(plugin);
-      }
-    }
-    const { Credentials } = await stsClient.send(new AssumeRoleCommand(params));
-    if (!Credentials || !Credentials.AccessKeyId || !Credentials.SecretAccessKey) {
-      throw new CredentialsProviderError(`Invalid response from STS.assumeRole call with role ${params.RoleArn}`, {
-        logger: options.logger,
-      });
-    }
-    return {
-      accessKeyId: Credentials.AccessKeyId,
-      secretAccessKey: Credentials.SecretAccessKey,
-      sessionToken: Credentials.SessionToken,
-      expiration: Credentials.Expiration,
-      // TODO(credentialScope): access normally when shape is updated.
-      credentialScope: (Credentials as any).CredentialScope,
-    };
-  };
-};
+export { FromTemporaryCredentialsOptions, fromTemporaryCredentials } from "./fromTemporaryCredentials.base";
diff --git a/packages/credential-providers/src/fromTemporaryCredentials.spec.ts b/packages/credential-providers/src/fromTemporaryCredentials.spec.ts
index ea0f512e63a8..f9bc202a2791 100644
--- a/packages/credential-providers/src/fromTemporaryCredentials.spec.ts
+++ b/packages/credential-providers/src/fromTemporaryCredentials.spec.ts
@@ -1,8 +1,8 @@
 import { AssumeRoleCommand, STSClient } from "@aws-sdk/nested-clients/sts";
-import { afterEach, beforeEach, describe, expect, test as it, vi } from "vitest";
+import { beforeEach, describe, expect, test as it, vi } from "vitest";
 
 import { fromTemporaryCredentials as fromTemporaryCredentialsNode } from "./fromTemporaryCredentials";
-import { fromTemporaryCredentials } from "./fromTemporaryCredentials.browser";
+import { fromTemporaryCredentials } from "./fromTemporaryCredentials.base";
 
 const mockSend = vi.fn();
 const mockUsePlugin = vi.fn();
diff --git a/packages/credential-providers/src/fromTemporaryCredentials.ts b/packages/credential-providers/src/fromTemporaryCredentials.ts
index 679e0c66b8e4..5ccbeddd038e 100644
--- a/packages/credential-providers/src/fromTemporaryCredentials.ts
+++ b/packages/credential-providers/src/fromTemporaryCredentials.ts
@@ -1,8 +1,8 @@
 import type { RuntimeConfigAwsCredentialIdentityProvider } from "@aws-sdk/types";
 
 import { fromNodeProviderChain } from "./fromNodeProviderChain";
-import type { FromTemporaryCredentialsOptions } from "./fromTemporaryCredentials.browser";
-import { fromTemporaryCredentials as fromTemporaryCredentialsBase } from "./fromTemporaryCredentials.browser";
+import type { FromTemporaryCredentialsOptions } from "./fromTemporaryCredentials.base";
+import { fromTemporaryCredentials as fromTemporaryCredentialsBase } from "./fromTemporaryCredentials.base";
 
 /**
  * @public