`iso-error` is an isomorphic error library that enables errors to work across physical boundaries, making it easier to handle errors in distributed systems. It provides a suite of packages, including `iso-error`, `google-cloud-api`, `iso-error-google-cloud-api`, and `iso-error-web`, to support various use cases and integrations. This library is ideal for developers working on applications that span multiple environments or require consistent error handling across different platforms.