Which file type is typically used for Puppet module metadata?

The typical file type used for Puppet module metadata is a .json file. In Puppet, metadata related to a module is defined within a file called metadata.json. This file contains crucial information about the module, such as its name, version, author, dependencies, and other essential attributes that help manage the module in the Puppet ecosystem.

Utilizing JSON for this purpose allows for a structured format that is both easy for humans to read and for machines to parse. JSON's widespread use in configuration and data interchange scenarios makes it a practical choice for Puppet's module metadata.

Other file types mentioned serve different purposes within the Puppet ecosystem. For instance, .pm files are typically associated with Perl modules, .yaml files might be used for configuration data but are not standard for Puppet module metadata, and .pp files are used for Puppet manifests, which contain the code that defines the configuration of resources rather than metadata about the module itself.