const Hackle = require("@hackler/hackle-sdk");

const hackleClient = Hackle.createInstance("YOUR_SDK_KEY");

hackleClient.onReady(() => {
    const variation = hackleClient.variation(AB_TEST_KEY);
   
    if (variation === "A") {
      // AS-IS Code
    } else if (variation === "B") {
      // TO-BE Code
    }
})

hackleClient.onReady(() => {
  hackleClient.track(EVENT_KEY);
});