flow like the river

BACK_BACK/node_modules/es-abstract/2022/Number/sameValueZero.js

@@ -0,0 +1,20 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var isNaN = require('../../helpers/isNaN');
+
+// https://262.ecma-international.org/11.0/#sec-numeric-types-number-sameValueZero
+
+module.exports = function NumberSameValueZero(x, y) {
+	if (typeof x !== 'number' || typeof y !== 'number') {
+		throw new $TypeError('Assertion failed: `x` and `y` arguments must be Numbers');
+	}
+
+	var xNaN = isNaN(x);
+	var yNaN = isNaN(y);
+	if (xNaN || yNaN) {
+		return xNaN === yNaN;
+	}
+	return x === y;
+};