Fully support @abstract tag

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 -   Added `markdownLinkExternal` option to treat `http[s]://` links in markdown documents and comments as external to be opened in a new tab, #2679.
 -   Added `navigation.excludeReferences` option to prevent re-exports from appearing in the left hand navigation, #2685.
+-   Added support for the `@abstract` tag, #2692.
 
 ### Bug Fixes
 

src/lib/converter/plugins/CommentPlugin.ts

@@ -192,6 +192,15 @@ export class CommentPlugin extends ConverterComponent {
             comment.removeModifier("@interface");
         }
 
+        if (comment.hasModifier("@abstract")) {
+            if (reflection.kindOf(ReflectionKind.SomeSignature)) {
+                reflection.parent!.setFlag(ReflectionFlag.Abstract);
+            } else {
+                reflection.setFlag(ReflectionFlag.Abstract);
+            }
+            comment.removeModifier("@abstract");
+        }
+
         if (comment.hasModifier("@private")) {
             reflection.setFlag(ReflectionFlag.Private);
             if (reflection.kindOf(ReflectionKind.CallSignature)) {

src/test/converter2/issues/gh2693.ts

@@ -0,0 +1,14 @@
+export abstract class Foo {
+    abstract foo(): void;
+
+    abstract x: number;
+}
+
+/** @abstract */
+export class Bar {
+    /** @abstract */
+    foo() {}
+
+    /** @abstract */
+    x!: number;
+}

src/test/issues.c2.test.ts

@@ -1707,4 +1707,15 @@ describe("Issue Tests", () => {
         // had a chance to copy the data's @param to the parameter.
         equal(data2.comment, undefined);
     });
+
+    it("#2693 handles the @abstract tag", () => {
+        const project = convert();
+        ok(query(project, "Foo.foo").flags.isAbstract);
+        ok(!querySig(project, "Foo.foo").flags.isAbstract);
+        ok(query(project, "Foo.x").flags.isAbstract);
+
+        ok(query(project, "Bar.foo").flags.isAbstract);
+        ok(!querySig(project, "Bar.foo").flags.isAbstract);
+        ok(query(project, "Bar.x").flags.isAbstract);
+    });
 });