Fix: object-shorthand's consistent-as-needed option (issue #7214) (#7215

)

* Fix: object-shorthand's consistent-as-needed option (issue #7214)

* Revise isRedundant and add more specs

* Trigger CLA agreement check again (empty commit)

* Fix typo

lib/rules/object-shorthand.js

@@ -14,6 +14,11 @@ const OPTIONS = {
     consistentAsNeeded: "consistent-as-needed"
 };
 
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+const astUtils = require("../ast-utils");
+
 //------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
@@ -149,15 +154,17 @@ module.exports = {
          * @returns {boolean} True if the key and value are named equally, false if not.
          * @private
          **/
-        function isRedudant(property) {
-            return (property.key && (
+        function isRedundant(property) {
+            const value = property.value;
 
-                // A function expression
-                property.value && property.value.id && property.value.id.name === property.key.name ||
+            if (value.type === "FunctionExpression") {
+                return !value.id; // Only anonymous should be shorthand method.
+            }
+            if (value.type === "Identifier") {
+                return astUtils.getStaticPropertyName(property) === value.name;
+            }
 
-                // A property
-                property.value && property.value.name === property.key.name
-            ));
+            return false;
         }
 
         /**
@@ -185,8 +192,8 @@ module.exports = {
                     } else if (checkRedundancy) {
 
                         // If all properties of the object contain a method or value with a name matching it's key,
-                        // all the keys are redudant.
-                        const canAlwaysUseShorthand = properties.every(isRedudant);
+                        // all the keys are redundant.
+                        const canAlwaysUseShorthand = properties.every(isRedundant);
 
                         if (canAlwaysUseShorthand) {
                             context.report(node, "Expected shorthand for all properties.");

tests/lib/rules/object-shorthand.js

@@ -103,7 +103,13 @@ ruleTester.run("object-shorthand", rule, {
 
         // consistent-as-needed
         { code: "var x = {a, b}", parserOptions: { ecmaVersion: 6}, options: ["consistent-as-needed"] },
-        { code: "var x = {a, b, get test(){return 1;}}", parserOptions: { ecmaVersion: 6}, options: ["consistent-as-needed"] }
+        { code: "var x = {a, b, get test(){return 1;}}", parserOptions: { ecmaVersion: 6}, options: ["consistent-as-needed"] },
+        { code: "var x = {0: 'foo'}", parserOptions: { ecmaVersion: 6}, options: ["consistent-as-needed"] },
+        { code: "var x = {'key': 'baz'}", parserOptions: { ecmaVersion: 6}, options: ["consistent-as-needed"] },
+        { code: "var x = {foo: 'foo'}", parserOptions: { ecmaVersion: 6}, options: ["consistent-as-needed"] },
+        { code: "var x = {[foo]: foo}", parserOptions: { ecmaVersion: 6}, options: ["consistent-as-needed"] },
+        { code: "var x = {foo: function foo() {}}", parserOptions: { ecmaVersion: 6}, options: ["consistent-as-needed"] },
+        { code: "var x = {[foo]: 'foo'}", parserOptions: { ecmaVersion: 6}, options: ["consistent-as-needed"] }
     ],
     invalid: [
         { code: "var x = {x: x}", output: "var x = {x}", parserOptions: { ecmaVersion: 6 }, errors: [{ message: "Expected property shorthand.", type: "Property" }] },
@@ -158,6 +164,7 @@ ruleTester.run("object-shorthand", rule, {
 
         // consistent-as-needed
         { code: "var x = {a: a, b: b}", parserOptions: { ecmaVersion: 6}, errors: [{ message: "Expected shorthand for all properties.", type: "" }], options: ["consistent-as-needed"] },
-        { code: "var x = {a, z: function z(){}}", parserOptions: { ecmaVersion: 6}, errors: [{ message: "Unexpected mix of shorthand and non-shorthand properties.", type: "" }], options: ["consistent-as-needed"] }
+        { code: "var x = {a, z: function z(){}}", parserOptions: { ecmaVersion: 6}, errors: [{ message: "Unexpected mix of shorthand and non-shorthand properties.", type: "" }], options: ["consistent-as-needed"] },
+        { code: "var x = {foo: function() {}}", parserOptions: { ecmaVersion: 6}, errors: [{ message: "Expected shorthand for all properties.", type: "" }], options: ["consistent-as-needed"] },
     ]
 });