AWS SDK Setting up credentials file

You can keep your AWS credentials data in a shared file used by SDKs and the command line interface. When the SDK for JavaScript loads, it automatically searches the shared credentials file, which is named "credentials". Where you keep the shared credentials file depends on your operating system:

The shared credentials file on Linux, Unix, and macOS: ~/.aws/credentials

The shared credentials file on Windows: C:\Users\USER_NAME\.aws\credentials

If you do not already have a shared credentials file, see Getting Your Credentials. Once you follow those instructions, you should see text similar to the following in the credentials file, where <YOUR_ACCESS_KEY_ID> is your access key ID and <YOUR_SECRET_ACCESS_KEY> is your secret access key:

[default]

aws_access_key_id = <YOUR_ACCESS_KEY_ID>

aws_secret_access_key = <YOUR_SECRET_ACCESS_KEY>

references:

https://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/loading-node-credentials-shared.html