# `Localize.DependencyRequiredError`
[🔗](https://github.com/elixir-localize/localize/blob/v1.3.0/lib/localize/exception/dependency_required_error.ex#L1)

Exception returned when an operation needs a companion package that is
not among the application's dependencies.

Localize delegates a few operations to sibling packages that depend on
Localize in turn, so it cannot depend on them back. Those operations
resolve the module at runtime and return this exception when it is
absent, naming the package to add.

# `t`

```elixir
@type t() :: %Localize.DependencyRequiredError{
  __exception__: term(),
  operation: String.t(),
  package: String.t()
}
```

The package that is required, and the operation that needs it.

---

*Consult [api-reference.md](api-reference.md) for complete listing*