single-spa Inspector is a Chrome add-on developed by single.spa.inspector.dev. It is a devtools panel specifically designed for single-spa applications. With this tool, developers can easily visualize their single-spa applications, update their status, and add import overrides directly in their browser.

The single-spa Inspector add-on provides a convenient way for developers to inspect and debug their single-spa applications. It allows them to view the structure of their applications, including the different micro-frontends and their dependencies. Developers can also see the current status of each micro-frontend, such as whether it is mounted or unmounted.

In addition to visualization, single-spa Inspector also offers the ability to update the status of micro-frontends. Developers can easily toggle the mount and unmount states of their applications, making it easier to test different scenarios and debug any issues that arise.

Another useful feature of single-spa Inspector is the ability to add import overrides. This allows developers to override specific imports within their single-spa applications, enabling them to test different versions of dependencies or mock certain modules for testing purposes.

Overall, single-spa Inspector is a valuable tool for developers working with single-spa applications. It provides a comprehensive set of features for inspecting, debugging, and manipulating single-spa applications directly in the browser.