Basics

This check has a base priority of high and works with any version of Elixir.

Explanation

Requires DynamicSupervisor and Registry child specs to declare a :name option.

Both processes are typically referenced by name from the rest of the application: DynamicSupervisor.start_child(MySupervisor, ...), Registry.lookup(MyRegistry, key). Starting them anonymously means callers must thread the pid through every callsite, and crashes replace the pid with a new one — silently breaking every caller that cached the old reference.

The check inspects list literals whose elements all look like child specs (bare module aliases or {Module, opts} 2-tuples) and flags DynamicSupervisor/Registry entries inside them that lack :name (or set name: to a literal nil).

Map-form child specs (%{id: ..., start: {M, :start_link, [opts]}}) aren't inspected — they're rare and would require walking inside the :start MFA tuple.

Bad

children = [
  DynamicSupervisor,
  {Registry, keys: :unique}
]

Good

children = [
  {DynamicSupervisor, name: MyApp.WorkerSupervisor},
  {Registry, keys: :unique, name: MyApp.WorkerRegistry}
]

Check-Specific Parameters

There are no specific parameters for this check.

General Parameters

Like with all checks, general params can be applied.

Parameters can be configured via the .credo.exs config file.