fix(language-service): do not crash when hovering over a label definitions (#17974)

Fixes: #17972
2017-07-07 09:46:18 -06:00
parent ae27af7399
commit 3b2d2c467a
2 changed files with 11 additions and 1 deletions
--- a/packages/language-service/src/locate_symbol.ts
+++ b/packages/language-service/src/locate_symbol.ts
@ -68,7 +68,7 @@ export function locateSymbol(info: TemplateInfo): SymbolInfo|undefined {
            }
          },
          visitReference(ast) {
-            symbol = info.template.query.getTypeSymbol(tokenReference(ast.value));
+            symbol = ast.value && info.template.query.getTypeSymbol(tokenReference(ast.value));
            span = spanOf(ast);
          },
          visitVariable(ast) {},