Fix parsing of qualified name in @Augments (#18914)

Author: Andy

src/compiler/parser.ts

@@ -6632,7 +6632,7 @@ namespace ts {
 
                 function parsePropertyAccessEntityNameExpression() {
                     let node: Identifier | PropertyAccessEntityNameExpression = parseJSDocIdentifierName(/*createIfMissing*/ true);
-                    while (token() === SyntaxKind.DotToken) {
+                    while (parseOptional(SyntaxKind.DotToken)) {
                         const prop: PropertyAccessEntityNameExpression = createNode(SyntaxKind.PropertyAccessExpression, node.pos) as PropertyAccessEntityNameExpression;
                         prop.expression = node;
                         prop.name = parseJSDocIdentifierName();

tests/baselines/reference/jsdocAugments_qualifiedName.symbols

@@ -0,0 +1,12 @@
+=== /a.js ===
+export class A {}
+>A : Symbol(A, Decl(a.js, 0, 0))
+
+=== /b.js ===
+import * as a from "./a";
+>a : Symbol(a, Decl(b.js, 0, 6))
+
+/** @augments a.A */
+class B {}
+>B : Symbol(B, Decl(b.js, 0, 25))
+

tests/baselines/reference/jsdocAugments_qualifiedName.types

@@ -0,0 +1,12 @@
+=== /a.js ===
+export class A {}
+>A : A
+
+=== /b.js ===
+import * as a from "./a";
+>a : typeof a
+
+/** @augments a.A */
+class B {}
+>B : B
+

tests/cases/compiler/jsdocAugments_qualifiedName.ts

@@ -0,0 +1,11 @@
+// @allowJs: true
+// @checkJs: true
+// @noEmit: true
+
+// @Filename: /a.js
+export class A {}
+
+// @Filename: /b.js
+import * as a from "./a";
+/** @augments a.A */
+class B {}