POJOs: use symbol properties as well, just not in a normalized order

src/keys.js

@@ -14,7 +14,7 @@ let recurse = obj => {
 			obj.forEach(recurse)
 			break
 		case Object.prototype:
-			temp = Object.getOwnPropertyNames(obj).sort()
+			temp = [...Object.getOwnPropertyNames(obj).sort(), ...Object.getOwnPropertySymbols(obj)]
 			array.push(OBJECT, temp.length, ...temp)
 			temp.forEach(key => recurse(obj[key]))
 			break

test.js

@@ -33,6 +33,13 @@ assert.notEqual(call([[0, 0], [0]]), call([[0], [0, 0]]))
 
 assert.equal(call({ a: 0, b: 1 }), call({ b: 1, a: 0 }))
 
+{
+	let s = Symbol()
+	assert.notEqual(call({ a: 0, b: 1 }), call({ [s]: 2, b: 1, a: 0 }))
+	assert.equal(call({ a: 0, b: 1, [s]: 2 }), call({ [s]: 2, b: 1, a: 0 }))
+	assert.notEqual(call({ a: 0, b: 1, [s]: 2 }), call({ [s]: 3, b: 1, a: 0 }))
+}
+
 assert.equal(call(new Date(2000, 0, 1)), call(new Date(2000, 0, 1, 0, 0, 0)))
 
 assert.equal(call([new Date(2000, 0, 1)]), call([new Date(2000, 0, 1, 0, 0, 0)]))