Version 1.14.0

Added

• Refactored the SDK to provide support for multiple instances. Previously, the SDK was singleton-based, which caused state to be shared across multiple SDK instances. Now, you can create any number of SDK instances, each with its own isolated utils, services, and associated state.

import VWO_FME

// Initialize first instance
let options1 = VWOInitOptions(
    sdkKey: "first_sdk_key",
    accountId: 123456,
    logLevel: .info,
    logPrefix: "Instance1",
    batchUploadTimeInterval: 60000  // 1 minute
)

VWOFme.initialize(options: options1) { result in
    switch result {
    case .success:
        print("First instance initialized")

        let userContext1 = VWOUserContext(id: "user_123")
        VWOFme.getFlag(featureKey: "feature_1", context: userContext1) { flag in
            // Use flag from first instance
        }
    case .failure(let error):
        print("First instance initialization failed: \(error)")
    }
}

// Initialize second instance with different configuration
let options2 = VWOInitOptions(
    sdkKey: "second_sdk_key",
    accountId: 789012,
    logLevel: .debug,
    logPrefix: "Instance2",
    batchUploadTimeInterval: 120000  // 2 minutes
)

VWOFme.initialize(options: options2) { result in
    switch result {
    case .success:
        print("Second instance initialized")

        let userContext2 = VWOUserContext(id: "user_456")
        VWOFme.getFlag(featureKey: "feature_2", context: userContext2) { flag in
            // Use flag from second instance
        }
    case .failure(let error):
        print("Second instance initialization failed: \(error)")
    }
}

Each SDK instance maintains its own:

• Settings and configuration
• Services (storage, logger, network layer, etc.)
• Utils and helper functions
• State and cached data

This ensures complete isolation between instances, allowing you to safely use multiple VWO accounts or environments in the same application without any interference.

Fixed

• Prevent API call retries when invalid credentials are provided.