align generics expansion between rust and typescript

Author: Anaethelion

compiler-rs/clients_schema/src/transform/expand_generics.rs

@@ -211,8 +211,10 @@ pub fn expand(model: IndexedModel, config: ExpandConfig) -> anyhow::Result<Index
 
         expand_behaviors(&mut resp.behaviors, &mappings, model, ctx)?;
         expand_body(&mut resp.body, &mappings, model, ctx)?;
-
-        // TODO: exceptions
+        
+        for exception in &mut resp.exceptions {
+            expand_body(&mut exception.body, &mappings, model, ctx)?;
+        }
 
         Ok(resp.into())
     }

compiler/src/transform/expand-generics.ts

@@ -27,7 +27,7 @@ import {
   Request,
   Response,
   Body,
-  InstanceOf, Inherits, Property
+  InstanceOf, Inherits, Property, ResponseException
 } from '../model/metamodel'
 import { readFile, writeFile } from 'fs/promises'
 import stringify from 'safe-stable-stringify'
@@ -293,6 +293,17 @@ export function expandGenerics (inputModel: Model, config?: ExpansionConfig): Mo
     return addIfNotSeen(resp.name, () => {
       const result = { ...resp }
       result.body = expandBody(resp.body, genericParamMapping(resp.generics, params))
+      if (resp.exceptions != null) {
+        result.exceptions = [];
+        for (const exception of resp.exceptions) {
+          const except: ResponseException = {
+              description: exception.description,
+              statusCodes: exception.statusCodes,
+              body: expandBody(exception.body, genericParamMapping(resp.generics, params))
+          }
+          result.exceptions.push(except)
+        }
+      }
       result.generics = undefined
       return result
     })