auth0
diff --git a/‎sign.js
+6-1 b/‎sign.js
+6-1
@@ -154,7 +154,12 @@ module.exports = function (payload, secretOrPrivateKey, options, callback) {
   }
 
   if (typeof options.expiresIn !== 'undefined' && typeof payload === 'object') {
-    payload.exp = timespan(options.expiresIn, timestamp);
+    try {
+      payload.exp = timespan(options.expiresIn, timestamp);
+    }
+    catch (err) {
+      return failure(err);
+    }
     if (typeof payload.exp === 'undefined') {
       return failure(new Error('"expiresIn" should be a number of seconds or string representing a timespan eg: "1d", "20h", 60'));
     }
Original file line number	Diff line number	Diff line change
`@@ -154,7 +154,12 @@ module.exports = function (payload, secretOrPrivateKey, options, callback) {`
`154`	`154`	`}`
`155`	`155`
`156`	`156`	`if (typeof options.expiresIn !== 'undefined' && typeof payload === 'object') {`
`157`		`- payload.exp = timespan(options.expiresIn, timestamp);`
	`157`	`+ try {`
	`158`	`+ payload.exp = timespan(options.expiresIn, timestamp);`
	`159`	`+ }`
	`160`	`+ catch (err) {`
	`161`	`+ return failure(err);`
	`162`	`+ }`
`158`	`163`	`if (typeof payload.exp === 'undefined') {`
`159`	`164`	`return failure(new Error('"expiresIn" should be a number of seconds or string representing a timespan eg: "1d", "20h", 60'));`
`160`	`165`	`}`