Normative: use Numbers for counters instead of mathematical values

spec.emu

@@ -16,22 +16,22 @@ copyright: false
     1. If _O_ is not an Object, throw a *TypeError* exception.
     1. Let _iterated_ be the Iterator Record { [[Iterator]]: _O_, [[NextMethod]]: *undefined*, [[Done]]: *false* }.
     1. If _skippedElements_ is *undefined*, then
-      1. Let _toSkip_ be 0.
+      1. Let _toSkip_ be *+0*<sub>𝔽</sub>.
     1. Else,
       1. If _skippedElements_ is not one of *+∞<sub>𝔽</sub>*, *-∞<sub>𝔽</sub>*, or an integral Number, then
         1. Let _error_ be ThrowCompletion(a newly created *TypeError* object).
         1. Return ? IteratorClose(_iterated_, _error_).
-      1. Let _toSkip_ be the extended mathematical value of _skippedElements_.
-    1. If _toSkip_ &lt; 0, then
+      1. Let _toSkip_ be _skippedElements_.
+    1. If _toSkip_ &lt; *-0*<sub>𝔽</sub>, then
       1. Let _error_ be ThrowCompletion(a newly created *RangeError* object).
       1. Return ? IteratorClose(_iterated_, _error_).
-    1. Let _skipped_ be 0.
+    1. Let _skipped_ be *+0*<sub>𝔽</sub>.
     1. Set _iterated_ to ? GetIteratorDirect(_O_).
     1. Repeat,
       1. Let _value_ be ? IteratorStepValue(_iterated_).
       1. If _value_ is ~done~, return *false*.
       1. If _skipped_ &lt; _toSkip_, then
-        1. Set _skipped_ to _skipped_ + 1.
+        1. Set _skipped_ to _skipped_ + *1*<sub>𝔽</sub>.
       1. Else if SameValueZero(_value_, _searchElement_) is *true*, then
         1. Return ? IteratorClose(_iterated_, NormalCompletion(*true*)).
   </emu-alg>