[Robustness] cache RegExp.prototype.test

Author: ljharb

index.js

@@ -16,6 +16,7 @@ var booleanValueOf = Boolean.prototype.valueOf;
 var objectToString = Object.prototype.toString;
 var functionToString = Function.prototype.toString;
 var match = String.prototype.match;
+var test = RegExp.prototype.test;
 var bigIntValueOf = typeof BigInt === 'function' ? BigInt.prototype.valueOf : null;
 var gOPS = Object.getOwnPropertySymbols;
 var symToString = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? Symbol.prototype.toString : null;
@@ -454,7 +455,7 @@ function arrObjKeys(obj, inspect) {
         if (hasShammedSymbols && symMap['$' + key] instanceof Symbol) {
             // this is to prevent shammed Symbols, which are stored as strings, from being included in the string key section
             continue; // eslint-disable-line no-restricted-syntax, no-continue
-        } else if ((/[^\w$]/).test(key)) {
+        } else if (test.call(/[^\w$]/, key)) {
             xs.push(inspect(key, obj) + ': ' + inspect(obj[key], obj));
         } else {
             xs.push(key + ': ' + inspect(obj[key], obj));