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metamask-extension/app/scripts/migrations/038.js

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const version = 38
import clone from 'clone'
import ABTestController from '../controllers/ab-test'
import { getRandomArrayItem } from '../lib/util'
/**
* The purpose of this migration is to assign all users to a test group for the fullScreenVsPopup a/b test
*/
export default {
version,
migrate: async function (originalVersionedData) {
const versionedData = clone(originalVersionedData)
versionedData.meta.version = version
const state = versionedData.data
versionedData.data = transformState(state)
return versionedData
},
}
function transformState (state) {
const { ABTestController: ABTestControllerState = {} } = state
const { abTests = {} } = ABTestControllerState
if (!abTests.fullScreenVsPopup) {
state = {
...state,
ABTestController: {
...ABTestControllerState,
abTests: {
...abTests,
fullScreenVsPopup: getRandomArrayItem(ABTestController.abTestGroupNames.fullScreenVsPopup),
},
},
}
}
return state
}