Fix missing type error message (#51)

Fixes: FG-4493

packages/omgidl-parser/src/IDLNodeProcessor.ts

@@ -101,7 +101,9 @@ export class IDLNodeProcessor {
       });
       if (!typeNode) {
         throw new Error(
-          `Could not find type <${type}> for field <${node.name ?? "undefined"}> in <${node.name}>`,
+          `Could not find type <${type}> for ${node.declarator} <${
+            node.name ?? "undefined"
+          }> in <${getParentScopedIdentifier(scopedIdentifier)}>`,
         );
       }
       if (typeNode.declarator === "enum") {
@@ -186,7 +188,7 @@ export class IDLNodeProcessor {
       if (typeNode.declarator === "typedef") {
         // To fully support this we would need to either make multiple passes or recursively resolve typedefs
         throw new Error(
-          `We do not support typedefs that reference other typedefs ${node.name} -> ${typeNode.name}`,
+          `We do not support typedefs that reference other typedefs ${node.name} -> ${type}`,
         );
       }
       if (typeNode.declarator === "struct") {
@@ -413,6 +415,15 @@ function fromScopedIdentifier(path: string): string[] {
   return path.split("::");
 }
 
+/** Used for error messages. Returns "global scope" when there is no parent scoped identifier */
+function getParentScopedIdentifier(scopedIdentifier: string): string {
+  const path = fromScopedIdentifier(scopedIdentifier);
+  if (path.length === 1) {
+    return "global scope";
+  }
+  return toScopedIdentifier(path.slice(0, -1));
+}
+
 function normalizeType(type: string): string {
   const toType = numericTypeMap[type];
   if (toType != undefined) {