Rule: Do not use additional "future reserved words" as identifiers

title

Do not use additional future reserved words as identifiers

description

The following words may be used as keywords in future evolutions of the language, so using them as identifiers should be avoided to allow an easier adoption of those potential future evolutions:

• implements
• let
• private
• public
• yield
• interface
• package
• protected
• static

Usage of those words as identifiers would produce an error in JavaScript strict mode code. See http://www.ecma-international.org/ecma-262/5.1/#sec-7.6.1.2.

The following code snippet illustrates this rule :

var package = document.getElementsByName("foo"); // non-compliant
var elements = document.getElementsByName("foo"); // compliant
var data = { package: true }; // compliant, as it is not used as an identifier here 

message

Rename "

" identifier to prevent potential conflicts with future evolutions of the JavaScript language.

severity

Critical

in Sonar way?

Yes