fix(ivy): add missing exportAs field to ngDirectiveDef (#25392)

This commit includes the missing exportAs field from @Directive and
propagates it into the ngDirectiveDef.

PR Close #25392

packages/compiler/src/render3/view/api.ts

@@ -96,6 +96,12 @@ export interface R3DirectiveMetadata {
    * Whether or not the component or directive inherits from another class
    */
   usesInheritance: boolean;
+
+  /**
+   * Reference name under which to export the directive's type in a template,
+   * if any.
+   */
+  exportAs: string|null;
 }
 
 /**

packages/compiler/src/render3/view/compiler.ts

@@ -79,6 +79,9 @@ function baseDirectiveFields(
   if (features.length) {
     definitionMap.set('features', o.literalArr(features));
   }
+  if (meta.exportAs !== null) {
+    definitionMap.set('exportAs', o.literal(meta.exportAs));
+  }
 
   return {definitionMap, statements: result.statements};
 }
@@ -279,6 +282,7 @@ function directiveMetadataFromGlobalMetadata(
     inputs: directive.inputs,
     outputs: directive.outputs,
     usesInheritance: false,
+    exportAs: null,
   };
 }