Module prune 

Pruning component-schema models that no generated operation uses.

This mirrors oapi-codegen’s default behaviour of pruning unused #/components entries before generation: only the schema models reachable from an operation survive. Roots are the types an operation references directly (path/query/header/cookie parameters, request and response bodies, and response headers). Reachability then follows each retained model’s own type references to a fixpoint, so a chain A -> B -> C rooted at an operation keeps all three while a model referenced by nothing is dropped.

Import-mapped (External) types are emitted into other modules and never appear as items here, so they are naturally excluded from the reachable set. Pruning is only applied when a server or client is generated (operations provide the roots). Models-only generation keeps every schema.

Functions

prune_unused_models

Drop every module item not reachable from service’s operations.