Merge pull request github#12759 from asgerf/js/getset-in-pattern

JS: Fix parsing of 'get' or 'set' pattern with a default value

Author: asgerf

javascript/extractor/src/com/semmle/jcorn/Parser.java

@@ -2069,6 +2069,7 @@ protected void parsePropertyValue(PropertyInfo pi, DestructuringErrors refDestru
       pi.value = this.parseMethod(pi.isGenerator, pi.isAsync);
     } else if (this.options.ecmaVersion() >= 5
         && !pi.computed
+        && !pi.isPattern
         && pi.key instanceof Identifier
         && (((Identifier) pi.key).getName().equals("get")
             || ((Identifier) pi.key).getName().equals("set"))

javascript/extractor/tests/exprs/input/patterns.js

@@ -0,0 +1,4 @@
+var { get, set } = x;
+var { get = 1 } = x;
+var { set = 1 } = x;
+var { get = 1, set = 1 } = x;