react-native swift module with no macros

example.swift

//
//  RCTViewController.swift
//  Grocerest
//
//  Created by Davide Bertola on 15/03/2017.
//


import Foundation
import UIKit
import React


class MyMethod: NSObject, RCTBridgeMethod {
    @objc(JSMethodName) var jsMethodName: String! = "MyMethod"
    
    public var functionType: RCTFunctionType = RCTFunctionType.normal
    
    public func invoke(
        with bridge: RCTBridge!,
        module: Any!,
        arguments: [Any]!) -> Any!
    {
        print("I have been invoked", bridge, module, arguments.description)
        return "value"
    }
}


class MyModule: NSObject, RCTBridgeModule {
    public static func moduleName() -> String! {
        return "MyModule"
    }
    
    public func methodsToExport() -> [RCTBridgeMethod]! {
        return [MyMethod()]
    }
}


class RCTViewController: UIViewController {
    
    var moduleName:String = "ProductAvailabilityModal"
    
    let data:NSDictionary = [
        "scores": [
            [
                "name": "Alex",
                "value": "42"
            ],
            [
                "name": "Joel",
                "value": "10"
            ]
        ]
    ]
    
    
    override func loadView() {
        super.loadView()
        
        let providerSettings = RCTBundleURLProvider.sharedSettings()!
        let jsCodeLocation = providerSettings.jsBundleURL(
            forBundleRoot: "index.ios",
            fallbackResource: nil
        )
        
        // a bridge holds one jsContext and may be shared between multiple RCTViews
        let rctBridge = RCTBridge.init(
            bundleURL: jsCodeLocation,
            moduleProvider: { () -> [RCTBridgeModule]? in
                return [MyModule()]
            },
            launchOptions: nil
        )
        
        let rctRootView = RCTRootView.init(
            bridge: rctBridge,
            moduleName: moduleName,
            initialProperties: data as [NSObject : AnyObject]
        )
        
        view = rctRootView
    }
}