docs: function parseImportSpecifier() {
          // import {<foo as bar>} ...;
          var local, imported, node = new Node();
  
          imported = parseNonComputedProperty();
          if (matchContextualKeyword('as')) {
              lex();
              local = parseVariableIdentifier();
          }
  
          return node.finishImportSpecifier(local, imported);
      }