Fix broken required-properties check

index.js

@@ -4,6 +4,7 @@ const asExpression = require("as-expression");
 const defaultValue = require("default-value");
 const assureArray = require("assure-array");
 const flatten = require("flatten");
+const arrayUnion = require("array-union");
 
 const ValidationError = require("@validatem/error");
 const validationResult = require("@validatem/validation-result");
@@ -55,7 +56,14 @@ module.exports = function hasShape(rules) {
 			let errors = [];
 			let newObject = {};
 
-			for (let [ key, value ] of Object.entries(object)) {
+			// We need to consider the keys from the ruleset (for detecting missing required properties) *and* the keys from the actual object (for handling extraneous values).
+			let allKeys = arrayUnion(
+				Object.keys(rules),
+				Object.keys(object)
+			);
+
+			for (let key of allKeys) {
+				let value = object[key];
 				let rule = rules[key];
 
 				if (rule != null) {

package.json

@@ -16,6 +16,7 @@
     "@validatem/combinator": "^0.1.0",
     "@validatem/error": "^1.0.0",
     "@validatem/validation-result": "^0.1.1",
+    "array-union": "^2.1.0",
     "as-expression": "^1.0.0",
     "assure-array": "^1.0.0",
     "default-value": "^1.0.0",

yarn.lock

@@ -135,6 +135,11 @@
   resolved "https://registry.yarnpkg.com/@validatem/virtual-property/-/virtual-property-0.1.0.tgz#880540dfd149f98ecf1095d93912e34443381fe4"
   integrity sha512-JUUvWtdqoSkOwlsl20oB3qFHYIL05a/TAfdY4AJcs55QeVTiX5iI1b8IoQW644sIWWooBuLv+XwoxjRsQFczlQ==
 
+array-union@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/array-union/-/array-union-2.1.0.tgz#b798420adbeb1de828d84acd8a2e23d3efe85e8d"
+  integrity sha512-HGyxoOTYUyCM6stUe6EJgnd4EoewAI7zMdfqO+kGjnlZmBDz/cR5pf8r/cR4Wq60sL/p0IkcjUEEPwS3GFrIyw==
+
 as-expression@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/as-expression/-/as-expression-1.0.0.tgz#7bc620ca4cb2fe0ee90d86729bd6add33b8fd831"