add all frontend files

node_modules/es-abstract/2025/ThisNumberValue.js

@@ -0,0 +1,15 @@
+'use strict';
+
+var callBound = require('call-bound');
+
+var $NumberValueOf = callBound('Number.prototype.valueOf');
+
+// https://262.ecma-international.org/15.0/#sec-thisnumbervalue
+
+module.exports = function ThisNumberValue(value) {
+	if (typeof value === 'number') {
+		return value;
+	}
+
+	return $NumberValueOf(value);
+};