feat(limit-order-protocol-facade): improve parsing result of simulate…

…TransferFroms for ethereum mainnet
1inch · Apr 30, 2021 · 69b41ac · 69b41ac
1 parent 4dc1301
commit 69b41ac
Showing 1 changed file with 18 additions and 3 deletions.
diff --git a/src/limit-order-protocol.facade.ts b/src/limit-order-protocol.facade.ts
@@ -139,11 +139,16 @@ export class LimitOrderProtocolFacade {
             .then((result) => {
                 const parsed = this.parseSimulateTransferResponse(result);
 
-                if (parsed !== null) {
-                    return parsed;
-                }
+                if (parsed !== null) return parsed;
 
                 return Promise.reject(result);
+            })
+            .catch((error) => {
+                const parsed = this.parseSimulateTransferError(error);
+
+                if (parsed !== null) return parsed;
+
+                return Promise.reject(error);
             });
     }
 
@@ -159,6 +164,16 @@ export class LimitOrderProtocolFacade {
         return null;
     }
 
+    parseSimulateTransferError(error: Error | string): boolean | null {
+        const message = typeof error === 'string' ? error : error.message;
+
+        if (message.includes(SIMULATE_TRANSFER_PREFIX)) {
+            return !message.includes('0');
+        }
+
+        return null;
+    }
+
     parseContractResponse(response: string): string {
         return this.providerConnector.decodeABIParameter<string>(
             'string',