src-runtime/validateType.js: Test IArguments and ArrayBufferView (#166)

* src-runtime/validateType.js: Test `IArguments` and `ArrayBufferView`

* Fix validateType, add comments

Author: kungfooman

src-runtime/validateType.js

@@ -169,6 +169,17 @@ function validateType(value, expect, loc, name, critical = true, warn, depth) {
       }
       warn(`${loc}> validateType> class> expected object, not '${value}'`);
       return false;
+    case 'IArguments':
+      // Used in playcanvas-engine/src/core/tags.js
+      // Testable via physics/offset-collision example.
+      /** @todo unit tests */
+      return value[Symbol.iterator] instanceof Function;
+    case 'ArrayBufferView':
+      /**
+       * @todo unit tests + TS Lib object like customObjects...
+       * for e.g. different TS versions or environments
+       */
+      return ArrayBuffer.isView(value);
   }
   //if (value === null) {
   //  /** @todo Add unit-tests/asserts tests to make sure this never happens */