fix(rules): removed switch from 'no-shadowing' check

Author: alecxe

docs/rules/no-shadowing.md

@@ -24,7 +24,6 @@ var $ = 1;
 var a = 2, $$ = 3;
 for (var by = 0; by < 10; ++by) {}
 try { json = JSON.parse(input) } catch (browser) {}
-switch (element) { case 1: break; default: break; }
 ```
 
 The following patterns are not warnings:
@@ -37,5 +36,4 @@ var elm = $(".myclass");
 var elements = $$(".myclass");
 for (var i = 0; i < 10; ++i) {}
 try { json = JSON.parse(input) } catch (e) {}
-switch (a) { case 1: break; default: break; }
 ```

lib/rules/no-shadowing.js

@@ -22,20 +22,12 @@ module.exports = function (context) {
         context.report(node, 'Unexpected Protractor built-in global variable shadowing')
       }
     }
-
-    // handling switch manually - getDeclaredVariables() does not return the switch discriminant
-    if (node.type === 'SwitchStatement' && node.discriminant) {
-      if (protractorGlobals.indexOf(node.discriminant.name) !== -1) {
-        context.report(node, 'Unexpected Protractor built-in global variable shadowing')
-      }
-    }
   }
 
   return {
     'VariableDeclaration': checkVariables,
     'FunctionDeclaration': checkVariables,
     'FunctionExpression': checkVariables,
-    'CatchClause': checkVariables,
-    'SwitchStatement': checkVariables
+    'CatchClause': checkVariables
   }
 }

test/rules/no-shadowing.js

@@ -13,8 +13,7 @@ eslintTester.run('no-shadowing', rule, {
     'var elm = $(".myclass");',
     'var elements = $$(".myclass");',
     'for (var i = 0; i < variables.length; ++i) {}',
-    'try { json = JSON.parse(input) } catch (e) {}',
-    'switch (a) { case 1: break; default: break; }'
+    'try { json = JSON.parse(input) } catch (e) {}'
   ],
 
   invalid: [
@@ -81,14 +80,6 @@ eslintTester.run('no-shadowing', rule, {
           message: 'Unexpected Protractor built-in global variable shadowing'
         }
       ]
-    },
-    {
-      code: 'switch (element) { case 1: break; default: break; }',
-      errors: [
-        {
-          message: 'Unexpected Protractor built-in global variable shadowing'
-        }
-      ]
     }
   ]
 })