Fuzz testing using Jazzer.js

test/jazzer-test-fuzzing.js

@@ -0,0 +1,15 @@
+const UAParser = require('ua-parser-js');
+
+module.exports.fuzz = function (buffer) {
+    const userAgent = buffer.toString();
+    const start = process.hrtime();
+    UAParser(userAgent);
+    const elapsed = process.hrtime(start);
+    const milisec = (elapsed[0]*1e3+elapsed[1]*1e-6).toFixed(3);
+    if (milisec > 1000) {
+        throw new Error(
+            `Potential ReDoS\n` +
+            `Time taken: ${milisec} ms.\n` +
+            `User agent: ${userAgent}`);
+    }
+};