publicize BuildError type and BuildErrorType enum (apollographql#309)

follow-up to: apollographql/federation-rs#276

allows matching on the `BuildErrorType` enum

Author: xuorig

apollo-federation-types/src/build/error.rs

@@ -51,6 +51,10 @@ impl BuildError {
     pub fn get_code(&self) -> Option<String> {
         self.code.clone()
     }
+
+    pub fn get_type(&self) -> BuildErrorType {
+        self.r#type.clone()
+    }
 }
 
 #[derive(Debug, Deserialize, Serialize, Clone, PartialEq, Eq)]

apollo-federation-types/src/build/mod.rs

@@ -5,7 +5,7 @@ mod subgraph_definition;
 
 /// The type representing the result of a supergraph build (for any version)
 pub type BuildResult = std::result::Result<BuildOutput, BuildErrors>;
-pub use error::{BuildError, BuildErrors};
+pub use error::{BuildError, BuildErrorType, BuildErrors};
 pub use hint::BuildHint;
 pub use output::BuildOutput;
 pub use subgraph_definition::SubgraphDefinition;