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node_modules/es-abstract/2019/IsInteger.js

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+'use strict';
+
+var GetIntrinsic = require('../GetIntrinsic');
+
+var $Math = GetIntrinsic('%Math%');
+
+var $floor = $Math.floor;
+var $abs = $Math.abs;
+
+var $isNaN = require('../helpers/isNaN');
+var $isFinite = require('../helpers/isFinite');
+
+// https://www.ecma-international.org/ecma-262/6.0/#sec-isinteger
+
+module.exports = function IsInteger(argument) {
+	if (typeof argument !== 'number' || $isNaN(argument) || !$isFinite(argument)) {
+		return false;
+	}
+	var abs = $abs(argument);
+	return $floor(abs) === abs;
+};