[Fix] Network add in portfolio swap (#1153)

* fix network add in portfolio swap

* run prettier

Author: BrettCleary

src/backend/proxy/providerPreload.ts

@@ -42,8 +42,33 @@ const listenToRendererCalls = (
   })
 }
 
+function extractJSONAfterError(input: string): object | null {
+  try {
+    // Match the pattern where "error=" precedes a JSON string
+    const errorPattern = /error=(\{[^{}]*\})/
+
+    const match = input.match(errorPattern)
+
+    if (match && match[1]) {
+      // Parse the JSON string captured by the regex
+      return JSON.parse(match[1])
+    }
+
+    // Return null if no valid JSON is found
+    return null
+  } catch (error) {
+    console.error('Error parsing JSON:', error)
+    return null
+  }
+}
+
 const provRequest = async (args: RequestArguments) => {
   const x = await ipcRenderer.invoke('providerRequest', args)
+  const jsonErrorInString = extractJSONAfterError(`${x}`)
+  if (jsonErrorInString !== null) {
+    throw jsonErrorInString
+  }
+
   if (
     x !== null &&
     x !== 'undefined' &&