Editorial: Use IsInteger abstract op (#1534)

Author: shvaikalesh

spec.html

@@ -7571,7 +7571,7 @@ <h1>SetFunctionLength ( _F_, _length_ )</h1>
       <emu-alg>
         1. Assert: _F_ is an extensible object that does not have a `"length"` own property.
         1. Assert: Type(_length_) is Number.
-        1. Assert: _length_ ≥ 0 and ! ToInteger(_length_) is equal to _length_.
+        1. Assert: _length_ ≥ 0 and ! IsInteger(_length_).
         1. Return ! DefinePropertyOrThrow(_F_, `"length"`, PropertyDescriptor { [[Value]]: _length_, [[Writable]]: *false*, [[Enumerable]]: *false*, [[Configurable]]: *true* }).
       </emu-alg>
     </emu-clause>
@@ -25604,11 +25604,7 @@ <h1>Number.isFinite ( _number_ )</h1>
         <h1>Number.isInteger ( _number_ )</h1>
         <p>When `Number.isInteger` is called with one argument _number_, the following steps are taken:</p>
         <emu-alg>
-          1. If Type(_number_) is not Number, return *false*.
-          1. If _number_ is *NaN*, *+&infin;*, or *-&infin;*, return *false*.
-          1. Let _integer_ be ! ToInteger(_number_).
-          1. If _integer_ is not equal to _number_, return *false*.
-          1. Otherwise, return *true*.
+          1. Return ! IsInteger(_number_).
         </emu-alg>
       </emu-clause>
 
@@ -25629,12 +25625,9 @@ <h1>Number.isNaN ( _number_ )</h1>
         <h1>Number.isSafeInteger ( _number_ )</h1>
         <p>When `Number.isSafeInteger` is called with one argument _number_, the following steps are taken:</p>
         <emu-alg>
-          1. If Type(_number_) is not Number, return *false*.
-          1. If _number_ is *NaN*, *+&infin;*, or *-&infin;*, return *false*.
-          1. Let _integer_ be ! ToInteger(_number_).
-          1. If _integer_ is not equal to _number_, return *false*.
-          1. If abs(_integer_) &le; 2<sup>53</sup> - 1, return *true*.
-          1. Otherwise, return *false*.
+          1. If ! IsInteger(_number_) is *true*, then
+            1. If abs(_number_) &le; 2<sup>53</sup> - 1, return *true*.
+          1. Return *false*.
         </emu-alg>
       </emu-clause>
 
@@ -28205,7 +28198,7 @@ <h1>String.fromCodePoint ( ..._codePoints_ )</h1>
           1. Repeat, while _nextIndex_ &lt; _length_
             1. Let _next_ be _codePoints_[_nextIndex_].
             1. Let _nextCP_ be ? ToNumber(_next_).
-            1. If SameValue(_nextCP_, ! ToInteger(_nextCP_)) is *false*, throw a *RangeError* exception.
+            1. If ! IsInteger(_nextCP_) is *false*, throw a *RangeError* exception.
             1. If _nextCP_ &lt; 0 or _nextCP_ &gt; 0x10FFFF, throw a *RangeError* exception.
             1. Append the elements of the UTF16Encoding of _nextCP_ to the end of _elements_.
             1. Increase _nextIndex_ by 1.