error-enum-core 1.0.0-alpha.6

Provide a easy way to define an enum that represents errors with error codes, document comments and several other functionalities.
Documentation 
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//! Tests for the [`Indexer`] implementations.
use error_enum_core::{ErrorType, SimpleSpan};

#[expect(dead_code)]
fn dyn_compatibility(_: Box<dyn ErrorType<Span = SimpleSpan, Message = String>>) {}