fix: Expand logic to include type elements in JSDoc

Author: jgsheppa

internal/astnav/tokens.go

@@ -190,7 +190,7 @@ func getTokenAtPosition(
 				flags := scanner.TokenFlags()
 				if tokenStart <= position && (position < tokenEnd) {
 					if token == ast.KindIdentifier || !ast.IsTokenKind(token) {
-						if ast.IsJSDocKind(current.Kind) {
+						if ast.IsJSDocKind(current.Kind) || ast.IsTypeElement(current) {
 							return current
 						}
 						panic(fmt.Sprintf("did not expect %s to have %s in its trivia", current.Kind.String(), token.String()))

internal/fourslash/tests/completionsJsdocStringProperty_test.go

@@ -26,7 +26,7 @@ var someVariable;`
 	f.VerifyCompletions(t, nil, &fourslash.CompletionsExpectedList{
 		IsIncomplete: false,
 		ItemDefaults: &fourslash.CompletionsExpectedItemDefaults{
-			CommitCharacters: &[]string{},
+			CommitCharacters: &[]string{".", ",", ";"},
 			EditRange:        Ignored,
 		},
 		Items: &fourslash.CompletionsExpectedItems{},