Ensure _.omit works with symbols.

lodash.js

@@ -2303,7 +2303,7 @@
      *
      * @private
      * @param {*} value The value to inspect.
-     * @returns {Array} Returns the array-like object.
+     * @returns {Array|Object} Returns the cast array-like object.
      */
     function baseCastArrayLikeObject(value) {
       return isArrayLikeObject(value) ? value : [];
@@ -2314,12 +2314,23 @@
      *
      * @private
      * @param {*} value The value to inspect.
-     * @returns {Array} Returns the array-like object.
+     * @returns {Function} Returns cast function.
      */
     function baseCastFunction(value) {
       return typeof value == 'function' ? value : identity;
     }
 
+    /**
+     * Casts `value` to a string if it's not a string or symbol.
+     *
+     * @private
+     * @param {*} value The value to inspect.
+     * @returns {string|symbol} Returns the cast key.
+     */
+    function baseCastKey(key) {
+      return (typeof key == 'string' || isSymbol(key)) ? key : (key + '');
+    }
+
     /**
      * Casts `value` to a path array if it's not one.
      *
@@ -12042,8 +12053,12 @@
       if (object == null) {
         return {};
       }
-      props = arrayMap(baseFlatten(props, 1), String);
-      return basePick(object, baseDifference(keysIn(object), props));
+      var allProps = keysIn(object);
+      if (!isArray(object)) {
+        arrayPush(allProps, getSymbolsIn(object));
+      }
+      props = arrayMap(baseFlatten(props, 1), baseCastKey);
+      return basePick(object, baseDifference(allProps, props));
     });
 
     /**
@@ -14494,7 +14509,7 @@
      * // => false
      */
     function toPath(value) {
-      return isArray(value) ? arrayMap(value, String) : stringToPath(value);
+      return isArray(value) ? arrayMap(value, baseCastKey) : stringToPath(value);
     }
 
     /**

test/test.js

@@ -15512,24 +15512,26 @@
     var expected = { 'b': 2, 'd': 4 },
         func = _[methodName],
         object = { 'a': 1, 'b': 2, 'c': 3, 'd': 4 },
-        prop = function(object, props) { return props; };
+        prop = lodashStable.nthArg(1);
 
     if (methodName == 'omitBy') {
       prop = function(object, props) {
-        props = typeof props == 'string' ? [props] : props;
+        props = lodashStable.isArray(props) ? props : [props];
         return function(value) {
-          return _.some(props, function(key) { return object[key] === value; });
+          return lodashStable.some(props, function(key) {
+            return object[key] === value;
+          });
         };
       };
     }
-    QUnit.test('`_.' + methodName + '` should create an object with omitted properties', function(assert) {
+    QUnit.test('`_.' + methodName + '` should create an object with omitted string keyed properties', function(assert) {
       assert.expect(2);
 
       assert.deepEqual(func(object, prop(object, 'a')), { 'b': 2, 'c': 3, 'd': 4 });
       assert.deepEqual(func(object, prop(object, ['a', 'c'])), expected);
     });
 
-    QUnit.test('`_.' + methodName + '` should iterate over inherited string keyed properties', function(assert) {
+    QUnit.test('`_.' + methodName + '` should include inherited string keyed properties', function(assert) {
       assert.expect(1);
 
       function Foo() {}
@@ -15538,6 +15540,59 @@
       assert.deepEqual(func(new Foo, prop(object, ['a', 'c'])), expected);
     });
 
+    QUnit.test('`_.' + methodName + '` should include symbol properties', function(assert) {
+      assert.expect(2);
+
+      function Foo() {
+        this.a = 0;
+        this[symbol] = 1;
+      }
+
+      if (Symbol) {
+        var symbol2 = Symbol('b');
+        Foo.prototype[symbol2] = 2;
+
+        var foo = new Foo,
+            actual = func(foo, prop(foo, 'a'));
+
+        assert.strictEqual(actual[symbol], 1);
+        assert.strictEqual(actual[symbol2], 2);
+      }
+      else {
+        skipAssert(assert, 2);
+      }
+    });
+
+    QUnit.test('`_.' + methodName + '` should create an object with omitted symbol properties', function(assert) {
+      assert.expect(6);
+
+      function Foo() {
+        this.a = 0;
+        this[symbol] = 1;
+      }
+
+      if (Symbol) {
+        var symbol2 = Symbol('b');
+        Foo.prototype[symbol2] = 2;
+
+        var foo = new Foo,
+            actual = func(foo, prop(foo, symbol));
+
+        assert.strictEqual(actual.a, 0);
+        assert.strictEqual(actual[symbol], undefined);
+        assert.strictEqual(actual[symbol2], 2);
+
+        actual = func(foo, prop(foo, symbol2));
+
+        assert.strictEqual(actual.a, 0);
+        assert.strictEqual(actual[symbol], 1);
+        assert.strictEqual(actual[symbol2], undefined);
+      }
+      else {
+        skipAssert(assert, 6);
+      }
+    });
+
     QUnit.test('`_.' + methodName + '` should work with an array `object` argument', function(assert) {
       assert.expect(1);
 
@@ -16574,14 +16629,14 @@
         };
       };
     }
-    QUnit.test('`_.' + methodName + '` should create an object of picked properties', function(assert) {
+    QUnit.test('`_.' + methodName + '` should create an object of picked string keyed properties', function(assert) {
       assert.expect(2);
 
       assert.deepEqual(func(object, prop(object, 'a')), { 'a': 1 });
       assert.deepEqual(func(object, prop(object, ['a', 'c'])), expected);
     });
 
-    QUnit.test('`_.' + methodName + '` should pick inherited properties', function(assert) {
+    QUnit.test('`_.' + methodName + '` should pick inherited string keyed properties', function(assert) {
       assert.expect(1);
 
       function Foo() {}