gistfile1.m

    // Error Condition handling
    if (writeError) {
        // Craft a failure message
        NSDictionary *resultsDict = @{
            @"success" : @NO,
            @"errMsg"  : [writeError localizedDescription]
        };
        
        // Execute the JavaScript failure callback handler
        failureCallback(@[resultsDict]);
    }
    // Success handling
    else {
    
        // Craft a success return message
        NSDictionary *resultsDict = @{
            @"success" : @YES
        };
        
        // Call the JavaScript sucess handler
        successCallback(@[resultsDict]);
    }