Refactor subscription to return zeroExSignature object

1 files changed, 2 insertions, 2 deletions

diff --git a/src/utils/utils.ts b/src/utils/utils.ts
index 5786bab07..bad5b6498 100644
--- a/src/utils/utils.ts
+++ b/src/utils/utils.ts
@@ -22,11 +22,11 @@ export const utils = {
     isParityNode(nodeVersion: string): boolean {
         return _.includes(nodeVersion, 'Parity');
     },
-    isValidOrderHash(orderHashHex: string) {
+    isValidOrderHash(orderHashHex: string): boolean {
         const isValid = /^0x[0-9A-F]{64}$/i.test(orderHashHex);
         return isValid;
     },
-    spawnSwitchErr(name: string, value: any) {
+    spawnSwitchErr(name: string, value: any): Error {
         return new Error(`Unexpected switch value: ${value} encountered for ${name}`);
     },
     getOrderHashHex(order: Order|SignedOrder, exchangeContractAddr: string): string {