feat: redux migration (#6830)

* feat: start working on redux migrations

* feat: fix migations and add tests

* feat: fix persistence and improve tests

* fix: tests

* fix: rename test file so it doesnt run in jest

* fix: tests

* fix: lint

* feat: indexedDB

* fix: e2e tests

* fix: address some comments

* fix: update legacy migrations

* fix: fix rehydrations

* fix: remove PersistGate and fix e2e tests

* fix: add comment to helper function

cypress/support/commands.ts

@@ -3,8 +3,8 @@ import 'cypress-hardhat/lib/browser'
 import { Eip1193Bridge } from '@ethersproject/experimental/lib/eip1193-bridge'
 
 import { FeatureFlag } from '../../src/featureFlags'
-import { UserState } from '../../src/state/user/reducer'
-import { CONNECTED_WALLET_USER_STATE } from '../utils/user-state'
+import { initialState, UserState } from '../../src/state/user/reducer'
+import { CONNECTED_WALLET_USER_STATE, setInitialUserState } from '../utils/user-state'
 
 declare global {
   // eslint-disable-next-line @typescript-eslint/no-namespace
@@ -54,18 +54,12 @@ Cypress.Commands.overwrite(
           onBeforeLoad(win) {
             options?.onBeforeLoad?.(win)
 
-            // We want to test from a clean state, so we clear the local storage (which clears redux).
-            win.localStorage.clear()
-
-            // Set initial user state.
-            win.localStorage.setItem(
-              'redux_localstorage_simple_user', // storage key for the user reducer using 'redux-localstorage-simple'
-              JSON.stringify({
+            setInitialUserState(win, {
+              ...initialState,
               hideUniswapWalletBanner: true,
               ...CONNECTED_WALLET_USER_STATE,
               ...(options?.userState ?? {}),
             })
-            )
 
             // Set feature flags, if configured.
             if (options?.featureFlags) {

cypress/utils/user-state.ts

@@ -4,3 +4,31 @@ import { UserState } from '../../src/state/user/reducer'
 export const CONNECTED_WALLET_USER_STATE: Partial<UserState> = { selectedWallet: ConnectionType.INJECTED }
 
 export const DISCONNECTED_WALLET_USER_STATE: Partial<UserState> = { selectedWallet: undefined }
+
+/**
+ * This sets the initial value of the "user" slice in IndexedDB.
+ * Other persisted slices are not set, so they will be filled with their respective initial values
+ * when the app runs.
+ */
+export function setInitialUserState(win: Cypress.AUTWindow, initialUserState: any) {
+  win.indexedDB.deleteDatabase('redux')
+
+  const dbRequest = win.indexedDB.open('redux')
+
+  dbRequest.onsuccess = function () {
+    const db = dbRequest.result
+    const transaction = db.transaction('keyvaluepairs', 'readwrite')
+    const store = transaction.objectStore('keyvaluepairs')
+    store.put(
+      {
+        user: initialUserState,
+      },
+      'persist:interface'
+    )
+  }
+
+  dbRequest.onupgradeneeded = function () {
+    const db = dbRequest.result
+    db.createObjectStore('keyvaluepairs')
+  }
+}

package.json

@@ -143,6 +143,7 @@
     "terser-webpack-plugin": "^5.3.9",
     "ts-jest": "^29.1.1",
     "ts-transform-graphql-tag": "^0.2.1",
+    "tsafe": "^1.6.4",
     "typechain": "^5.0.0",
     "typescript": "^4.9.4",
     "webpack": "^5.88.2",
@@ -235,6 +236,7 @@
     "inter-ui": "^3.13.1",
     "jotai": "^1.3.7",
     "jsbi": "^3.1.4",
+    "localforage": "^1.10.0",
     "make-plural": "^7.0.0",
     "ms": "^2.1.3",
     "multicodec": "^3.0.1",
@@ -265,7 +267,7 @@
     "react-window-infinite-loader": "^1.0.8",
     "rebass": "^4.0.7",
     "redux": "^4.1.2",
-    "redux-localstorage-simple": "^2.3.1",
+    "redux-persist": "^6.0.0",
     "statsig-react": "^1.22.0",
     "styled-components": "^5.3.5",
     "tiny-invariant": "^1.2.0",

src/hooks/useEagerlyConnect.ts

 import { Connector } from '@web3-react/types'
 import { gnosisSafeConnection, networkConnection } from 'connection'
 import { getConnection } from 'connection'
-import { Connection } from 'connection/types'
 import { useEffect } from 'react'
 import { useAppDispatch, useAppSelector } from 'state/hooks'
 import { updateSelectedWallet } from 'state/user/reducer'
@@ -22,22 +21,24 @@ export default function useEagerlyConnect() {
   const dispatch = useAppDispatch()
 
   const selectedWallet = useAppSelector((state) => state.user.selectedWallet)
-
-  let selectedConnection: Connection | undefined
-  if (selectedWallet) {
-    try {
-      selectedConnection = getConnection(selectedWallet)
-    } catch {
-      dispatch(updateSelectedWallet({ wallet: undefined }))
-    }
-  }
+  const rehydrated = useAppSelector((state) => state._persist.rehydrated)
 
   useEffect(() => {
+    if (!selectedWallet) return
+    try {
+      const selectedConnection = getConnection(selectedWallet)
       connect(gnosisSafeConnection.connector)
       connect(networkConnection.connector)
 
       if (selectedConnection) {
         connect(selectedConnection.connector)
-    } // The dependency list is empty so this is only run once on mount
-  }, []) // eslint-disable-line react-hooks/exhaustive-deps
+      }
+    } catch {
+      // only clear the persisted wallet type if it failed to connect.
+      if (rehydrated) {
+        dispatch(updateSelectedWallet({ wallet: undefined }))
+      }
+      return
+    }
+  }, [dispatch, rehydrated, selectedWallet])
 }

src/state/application/hooks.ts

@@ -3,8 +3,8 @@ import { sendAnalyticsEvent } from 'analytics'
 import { DEFAULT_TXN_DISMISS_MS } from 'constants/misc'
 import { useCallback, useEffect, useMemo, useState } from 'react'
 import { useAppDispatch, useAppSelector } from 'state/hooks'
+import { AppState } from 'state/reducer'
 
-import { AppState } from '../types'
 import {
   addPopup,
   ApplicationModal,

src/state/application/reducer.ts

@@ -47,7 +47,7 @@ export enum ApplicationModal {
   UNISWAP_NFT_AIRDROP_CLAIM,
 }
 
-type PopupList = Array<{ key: string; show: boolean; content: PopupContent; removeAfterMs: number | null }>
+export type PopupList = Array<{ key: string; show: boolean; content: PopupContent; removeAfterMs: number | null }>
 
 export interface ApplicationState {
   readonly chainId: number | null

src/state/burn/hooks.tsx

@@ -6,11 +6,11 @@ import JSBI from 'jsbi'
 import tryParseCurrencyAmount from 'lib/utils/tryParseCurrencyAmount'
 import { ReactNode, useCallback } from 'react'
 import { useAppDispatch, useAppSelector } from 'state/hooks'
+import { AppState } from 'state/reducer'
 
 import { useTotalSupply } from '../../hooks/useTotalSupply'
 import { useV2Pair } from '../../hooks/useV2Pairs'
 import { useTokenBalances } from '../connection/hooks'
-import { AppState } from '../types'
 import { Field, typeInput } from './actions'
 
 export function useBurnState(): AppState['burn'] {

src/state/burn/reducer.ts

@@ -2,7 +2,7 @@ import { createReducer } from '@reduxjs/toolkit'
 
 import { Field, typeInput } from './actions'
 
-interface BurnState {
+export interface BurnState {
   readonly independentField: Field
   readonly typedValue: string
 }

src/state/burn/v3/hooks.tsx

@@ -10,7 +10,7 @@ import { useAppDispatch, useAppSelector } from 'state/hooks'
 import { PositionDetails } from 'types/position'
 import { unwrappedToken } from 'utils/unwrappedToken'
 
-import { AppState } from '../../types'
+import { AppState } from '../../reducer'
 import { selectPercent } from './actions'
 
 export function useBurnV3State(): AppState['burnV3'] {

src/state/burn/v3/reducer.ts

@@ -2,7 +2,7 @@ import { createReducer } from '@reduxjs/toolkit'
 
 import { selectPercent } from './actions'
 
-interface BurnV3State {
+export interface BurnV3State {
   readonly percent: number
 }
 

src/state/index.ts

 import { configureStore } from '@reduxjs/toolkit'
 import { setupListeners } from '@reduxjs/toolkit/query/react'
-import { load, save } from 'redux-localstorage-simple'
-import { isTestEnv } from 'utils/env'
+import { persistStore } from 'redux-persist'
 
 import { updateVersion } from './global/actions'
 import { sentryEnhancer } from './logging'
 import reducer from './reducer'
 import { routingApi } from './routing/slice'
 
-const PERSISTED_KEYS: string[] = ['user', 'transactions', 'signatures', 'lists']
-
-const store = configureStore({
+export function createDefaultStore() {
+  return configureStore({
     reducer,
     enhancers: (defaultEnhancers) => defaultEnhancers.concat(sentryEnhancer),
     middleware: (getDefaultMiddleware) =>
@@ -21,15 +19,23 @@ const store = configureStore({
           // because we are not adding it into any persisted store that requires serialization (e.g. localStorage)
           ignoredActionPaths: ['meta.arg', 'meta.baseQueryMeta', 'payload.trade'],
           ignoredPaths: [routingApi.reducerPath],
+          ignoredActions: [
+            // ignore the redux-persist actions
+            'persist/PERSIST',
+            'persist/REHYDRATE',
+            'persist/PURGE',
+            'persist/FLUSH',
+          ],
         },
+      }).concat(routingApi.middleware),
   })
-      .concat(routingApi.middleware)
-      .concat(save({ states: PERSISTED_KEYS, debounce: 1000 })),
-  preloadedState: load({ states: PERSISTED_KEYS, disableWarnings: isTestEnv() }),
-})
+}
 
-store.dispatch(updateVersion())
+const store = createDefaultStore()
+export const persistor = persistStore(store)
 
 setupListeners(store.dispatch)
 
+store.dispatch(updateVersion())
+
 export default store

src/state/lists/hooks.ts

 import { TokenAddressMap, tokensToChainTokenMap } from 'lib/hooks/useTokenList/utils'
 import { useMemo } from 'react'
 import { useAppSelector } from 'state/hooks'
+import { AppState } from 'state/reducer'
 import sortByListPriority from 'utils/listSort'
 
 import BROKEN_LIST from '../../constants/tokenLists/broken.tokenlist.json'
-import { AppState } from '../types'
 import { DEFAULT_ACTIVE_LIST_URLS, UNSUPPORTED_LIST_URLS } from './../../constants/lists'
 
 type Mutable<T> = {

src/state/lists/reducer.test.ts

+import tokenSafetyLookup from 'constants/tokenSafetyLookup'
 import { createStore, Store } from 'redux'
+import { updateVersion } from 'state/global/actions'
 
 import { DEFAULT_LIST_OF_LISTS } from '../../constants/lists'
-import tokenSafetyLookup from '../../constants/tokenSafetyLookup'
-import { updateVersion } from '../global/actions'
 import { acceptListUpdate, addList, fetchTokenList, removeList } from './actions'
 import reducer, { ListsState } from './reducer'
 

src/state/lists/reducer.ts

@@ -30,7 +30,7 @@ const NEW_LIST_STATE: ListState = {
 
 type Mutable<T> = { -readonly [P in keyof T]: T[P] extends ReadonlyArray<infer U> ? U[] : T[P] }
 
-const initialState: ListsState = {
+export const initialState: ListsState = {
   lastInitializedDefaultListOfLists: DEFAULT_LIST_OF_LISTS,
   byUrl: {
     ...DEFAULT_LIST_OF_LISTS.reduce<Mutable<ListsState['byUrl']>>((memo, listUrl) => {

src/state/logging.ts

 import * as Sentry from '@sentry/react'
 import noop from 'utils/noop'
 
-import { AppState } from './types'
+import { AppState } from './reducer'
 
 /* Utility type to mark all properties of a type as optional */
 type DeepPartial<T> = T extends object

src/state/logs/slice.ts

@@ -3,7 +3,7 @@ import { createSlice, PayloadAction } from '@reduxjs/toolkit'
 
 import { filterToKey, Log } from './utils'
 
-interface LogsState {
+export interface LogsState {
   [chainId: number]: {
     [filterKey: string]: {
       listeners: number

src/state/migrations.test.ts

+import { Store } from '@reduxjs/toolkit'
+import { persistStore } from 'redux-persist'
+import { createDefaultStore } from 'state'
+
+import { initialState as initialListsState } from './lists/reducer'
+import { initialState as initialSignaturesState } from './signatures/reducer'
+import { initialState as initialTransactionsState } from './transactions/reducer'
+import { initialState as initialUserState } from './user/reducer'
+
+const defaultState = {
+  lists: {},
+  transactions: {},
+  user: {},
+  _persist: {
+    rehydrated: true,
+    version: 0,
+  },
+  application: {
+    chainId: null,
+    fiatOnramp: {
+      availabilityChecked: false,
+      available: false,
+    },
+    openModal: null,
+    popupList: [],
+  },
+  burn: {
+    independentField: 'LIQUIDITY_PERCENT',
+    typedValue: '0',
+  },
+  burnV3: {
+    percent: 0,
+  },
+  logs: {},
+  mint: {
+    independentField: 'CURRENCY_A',
+    leftRangeTypedValue: '',
+    otherTypedValue: '',
+    rightRangeTypedValue: '',
+    startPriceTypedValue: '',
+    typedValue: '',
+  },
+  mintV3: {
+    independentField: 'CURRENCY_A',
+    leftRangeTypedValue: '',
+    rightRangeTypedValue: '',
+    startPriceTypedValue: '',
+    typedValue: '',
+  },
+  multicall: {
+    callResults: {},
+  },
+  wallets: {
+    connectedWallets: [],
+    switchingChain: false,
+  },
+}
+
+describe('redux migrations', () => {
+  let store: Store
+
+  beforeEach(() => {
+    localStorage.clear()
+    // Re-create the store before each test so it starts with undefined state.
+    store = createDefaultStore()
+  })
+
+  it('clears legacy redux_localstorage_simple values during the initial migration', async () => {
+    localStorage.setItem(
+      'redux_localstorage_simple_transactions',
+      JSON.stringify({ 1: { test: { info: 'transactions' } } })
+    )
+    localStorage.setItem('redux_localstorage_simple_user', JSON.stringify({ test: 'user' }))
+    localStorage.setItem('redux_localstorage_simple_lists', JSON.stringify({ test: 'lists' }))
+    localStorage.setItem('redux_localstorage_simple_signatures', JSON.stringify({ test: 'signatures' }))
+
+    persistStore(store)
+    // wait for the migration to complete
+    await new Promise((resolve) => setTimeout(resolve, 0))
+
+    expect(localStorage.getItem('redux_localstorage_simple_transactions')).toBeNull()
+    expect(localStorage.getItem('redux_localstorage_simple_user')).toBeNull()
+    expect(localStorage.getItem('redux_localstorage_simple_lists')).toBeNull()
+    expect(localStorage.getItem('redux_localstorage_simple_signatures')).toBeNull()
+
+    const state = store.getState()
+    expect(state).toMatchObject({
+      ...defaultState,
+      // These are migrated values.
+      lists: {
+        test: 'lists',
+      },
+      transactions: {
+        1: {
+          test: { info: 'transactions' },
+        },
+      },
+      user: {
+        test: 'user',
+      },
+      signatures: {
+        test: 'signatures',
+      },
+    })
+  })
+
+  it('initial state with no previous persisted state', async () => {
+    persistStore(store)
+    // wait for the migration to complete
+    await new Promise((resolve) => setTimeout(resolve, 0))
+
+    const state = store.getState()
+    expect(state).toMatchObject(defaultState)
+  })
+
+  it('migrates from a previous version of the state type', async () => {
+    localStorage.setItem(
+      'persist:interface',
+      JSON.stringify({
+        user: { ...initialUserState, test: 'user' },
+        transactions: initialTransactionsState,
+        lists: initialListsState,
+        signatures: initialSignaturesState,
+        _persist: { version: -1 },
+      })
+    )
+
+    persistStore(store)
+    // wait for the migration to complete
+    await new Promise((resolve) => setTimeout(resolve, 0))
+
+    const state = store.getState()
+    expect(state).toMatchObject(defaultState)
+  })
+})

src/state/migrations.ts

+import { createMigrate, MigrationManifest, PersistedState, PersistMigrate } from 'redux-persist'
+import { MigrationConfig } from 'redux-persist/es/createMigrate'
+
+import { migration0 } from './migrations/0'
+import { legacyLocalStorageMigration } from './migrations/legacy'
+
+/**
+ * These run once per state re-hydration when a version mismatch is detected.
+ * Keep them as lightweight as possible.
+ *
+ * Migration functions should not assume that any value exists in localStorage previously,
+ * because a user may be visiting the site for the first time or have cleared their localStorage.
+ */
+
+// The target version number is the key
+export const migrations: MigrationManifest = {
+  0: migration0,
+}
+
+// We use a custom migration function for the initial state, because redux-persist
+// skips migration if there is no initial state, but we want to migrate
+// previous persisted state from redux-localstorage-simple.
+export function customCreateMigrate(migrations: MigrationManifest, options: MigrationConfig): PersistMigrate {
+  const defaultMigrate = createMigrate(migrations, options)
+
+  return async (state: PersistedState, currentVersion: number) => {
+    if (state === undefined) {
+      // If no state exists, run the legacy migration to set initial state
+      state = await legacyLocalStorageMigration()
+    }
+
+    // Otherwise, use the default migration process
+    return defaultMigrate(state, currentVersion)
+  }
+}

src/state/migrations/0.ts

+import { PersistedState } from 'redux-persist'
+
+/**
+ * Initial migration as a proof of concept.
+ *
+ * Legacy migration from redux-localstorage-simple happens in legacy.ts
+ */
+export const migration0 = (state: PersistedState) => {
+  return state
+}

src/state/migrations/legacy.ts

+import { DEFAULT_DEADLINE_FROM_NOW } from 'constants/misc'
+import { persistor } from 'state'
+
+import { initialState as initialListsState } from '../lists/reducer'
+import { RouterPreference } from '../routing/types'
+import { TransactionState } from '../transactions/reducer'
+import { initialState as initialTransactionsState } from '../transactions/reducer'
+import { UserState } from '../user/reducer'
+import { initialState as initialUserState } from '../user/reducer'
+import { SlippageTolerance } from '../user/types'
+
+const currentTimestamp = () => new Date().getTime()
+
+function tryParseOldState<T>(value: string | null, fallback: T): T {
+  try {
+    return value ? JSON.parse(value) : fallback
+  } catch (e) {
+    return fallback
+  }
+}
+
+/**
+ * These functions handle all migrations that existed before we started tracking version numbers.
+ */
+
+export const legacyLocalStorageMigration = async () => {
+  const oldTransactions = localStorage.getItem('redux_localstorage_simple_transactions')
+  const oldUser = localStorage.getItem('redux_localstorage_simple_user')
+  const oldLists = localStorage.getItem('redux_localstorage_simple_lists')
+  const oldSignatures = localStorage.getItem('redux_localstorage_simple_signatures')
+
+  const newTransactions = tryParseOldState(oldTransactions, initialTransactionsState)
+  const newUser = tryParseOldState(oldUser, initialUserState)
+  const newLists = tryParseOldState(oldLists, initialListsState)
+  const newSignatures = tryParseOldState(oldSignatures, {})
+
+  const result = {
+    user: legacyUserMigrations(newUser),
+    transactions: legacyTransactionMigrations(newTransactions),
+    lists: newLists,
+    signatures: newSignatures,
+    _persist: { version: 0, rehydrated: true },
+  }
+
+  await persistor.flush()
+
+  localStorage.removeItem('redux_localstorage_simple_transactions')
+  localStorage.removeItem('redux_localstorage_simple_user')
+  localStorage.removeItem('redux_localstorage_simple_lists')
+  localStorage.removeItem('redux_localstorage_simple_signatures')
+  return result
+}
+
+function legacyTransactionMigrations(state: any): TransactionState {
+  // Make a copy of the object so we can mutate it.
+  const result = JSON.parse(JSON.stringify(state))
+  // in case there are any transactions in the store with the old format, remove them
+  Object.keys(result).forEach((chainId) => {
+    const chainTransactions = result[chainId as unknown as number]
+    Object.keys(chainTransactions).forEach((hash) => {
+      if (!('info' in chainTransactions[hash])) {
+        // clear old transactions that don't have the right format
+        delete chainTransactions[hash]
+      }
+    })
+  })
+  return result
+}
+
+function legacyUserMigrations(state: any): UserState {
+  // Make a copy of the object so we can mutate it.
+  const result = JSON.parse(JSON.stringify(state))
+  // If `selectedWallet` is a WalletConnect v1 wallet, reset to default.
+  if (result.selectedWallet) {
+    const selectedWallet = result.selectedWallet as string
+    if (selectedWallet === 'UNIWALLET' || selectedWallet === 'UNISWAP_WALLET' || selectedWallet === 'WALLET_CONNECT') {
+      delete result.selectedWallet
+    }
+  }
+
+  // If `userSlippageTolerance` is not present or its value is invalid, reset to default
+  if (
+    typeof result.userSlippageTolerance !== 'number' ||
+    !Number.isInteger(result.userSlippageTolerance) ||
+    result.userSlippageTolerance < 0 ||
+    result.userSlippageTolerance > 5000
+  ) {
+    result.userSlippageTolerance = SlippageTolerance.Auto
+  } else {
+    if (
+      !result.userSlippageToleranceHasBeenMigratedToAuto &&
+      [10, 50, 100].indexOf(result.userSlippageTolerance) !== -1
+    ) {
+      result.userSlippageTolerance = SlippageTolerance.Auto
+      result.userSlippageToleranceHasBeenMigratedToAuto = true
+    }
+  }
+
+  // If `userDeadline` is not present or its value is invalid, reset to default
+  if (
+    typeof result.userDeadline !== 'number' ||
+    !Number.isInteger(result.userDeadline) ||
+    result.userDeadline < 60 ||
+    result.userDeadline > 180 * 60
+  ) {
+    result.userDeadline = DEFAULT_DEADLINE_FROM_NOW
+  }
+
+  // If `userRouterPreference` is not present, reset to default
+  if (typeof result.userRouterPreference !== 'string') {
+    result.userRouterPreference = RouterPreference.API
+  }
+
+  // If `userRouterPreference` is `AUTO`, migrate to `API`
+  if ((result.userRouterPreference as string) === 'auto') {
+    result.userRouterPreference = RouterPreference.API
+  }
+
+  //If `buyFiatFlowCompleted` is present, delete it using filtering
+  if ('buyFiatFlowCompleted' in result) {
+    //ignoring due to type errors occuring since we now remove this state
+    //@ts-ignore
+    delete result.buyFiatFlowCompleted
+  }
+
+  result.lastUpdateVersionTimestamp = currentTimestamp()
+  return result
+}

src/state/mint/hooks.tsx

@@ -10,7 +10,7 @@ import { useAppDispatch, useAppSelector } from 'state/hooks'
 import { useTotalSupply } from '../../hooks/useTotalSupply'
 import { PairState, useV2Pair } from '../../hooks/useV2Pairs'
 import { useCurrencyBalances } from '../connection/hooks'
-import { AppState } from '../types'
+import { AppState } from '../reducer'
 import { Field, typeInput } from './actions'
 
 const ZERO = JSBI.BigInt(0)

src/state/mint/v3/hooks.tsx

@@ -23,7 +23,7 @@ import { getTickToPrice } from 'utils/getTickToPrice'
 import { BIG_INT_ZERO } from '../../../constants/misc'
 import { PoolState } from '../../../hooks/usePools'
 import { useCurrencyBalances } from '../../connection/hooks'
-import { AppState } from '../../types'
+import { AppState } from '../../reducer'
 import {
   Bound,
   Field,

src/state/mint/v3/reducer.ts

@@ -10,9 +10,9 @@ import {
   typeStartPriceInput,
 } from './actions'
 
-type FullRange = true
+export type FullRange = true
 
-interface MintState {
+export interface MintState {
   readonly independentField: Field
   readonly typedValue: string
   readonly startPriceTypedValue: string // for the case when there's no liquidity

src/state/reducer.ts

+import { combineReducers } from '@reduxjs/toolkit'
 import multicall from 'lib/state/multicall'
+import localForage from 'localforage'
+import { PersistConfig, persistReducer } from 'redux-persist'
+import { isDevelopmentEnv } from 'utils/env'
 
 import application from './application/reducer'
 import burn from './burn/reducer'
 import burnV3 from './burn/v3/reducer'
 import lists from './lists/reducer'
 import logs from './logs/slice'
+import { customCreateMigrate, migrations } from './migrations'
 import mint from './mint/reducer'
 import mintV3 from './mint/v3/reducer'
 import { routingApi } from './routing/slice'
@@ -13,18 +18,45 @@ import transactions from './transactions/reducer'
 import user from './user/reducer'
 import wallets from './wallets/reducer'
 
-export default {
-  application,
+const persistedReducers = {
   user,
   transactions,
   signatures,
+  lists,
+}
+
+const appReducer = combineReducers({
+  application,
   wallets,
   mint,
   mintV3,
   burn,
   burnV3,
   multicall: multicall.reducer,
-  lists,
   logs,
   [routingApi.reducerPath]: routingApi.reducer,
+  ...persistedReducers,
+})
+
+export type AppState = ReturnType<typeof appReducer>
+
+const persistConfig: PersistConfig<AppState> = {
+  key: 'interface',
+  version: 0, // see migrations.ts for more details about this version
+  storage: localForage.createInstance({
+    name: 'redux',
+  }),
+  migrate: customCreateMigrate(migrations, { debug: false }),
+  whitelist: Object.keys(persistedReducers),
+  throttle: 1000, // ms
+  serialize: false,
+  // The typescript definitions are wrong - we need this to be false for unserialized storage to work.
+  // We need unserialized storage for inspectable db entries for debugging.
+  // @ts-ignore
+  deserialize: false,
+  debug: isDevelopmentEnv(),
 }
+
+const persistedReducer = persistReducer(persistConfig, appReducer)
+
+export default persistedReducer

src/state/reducerTypeTest.ts

+import { ChainId } from '@uniswap/sdk-core'
+import { TokenList } from '@uniswap/token-lists'
+import { ConnectionType } from 'connection/types'
+import { SupportedLocale } from 'constants/locales'
+import multicall from 'lib/state/multicall'
+import { CombinedState } from 'redux'
+import { assert, Equals } from 'tsafe'
+
+import { ApplicationModal, ApplicationState, PopupList } from './application/reducer'
+import { Field as BurnField } from './burn/actions'
+import { BurnState } from './burn/reducer'
+import { BurnV3State } from './burn/v3/reducer'
+import { ListsState } from './lists/reducer'
+import { LogsState } from './logs/slice'
+import { Log } from './logs/utils'
+import { Field } from './mint/actions'
+import { MintState } from './mint/reducer'
+import { Field as FieldV3 } from './mint/v3/actions'
+import { FullRange, MintState as MintV3State } from './mint/v3/reducer'
+import { AppState } from './reducer'
+import { routingApi } from './routing/slice'
+import { RouterPreference } from './routing/types'
+import { SignatureState } from './signatures/reducer'
+import { TransactionState } from './transactions/reducer'
+import { TransactionDetails } from './transactions/types'
+import { UserState } from './user/reducer'
+import { SerializedPair, SerializedToken, SlippageTolerance } from './user/types'
+import { WalletState } from './wallets/reducer'
+import { Wallet } from './wallets/types'
+
+/**
+ * WARNING:
+ * Any changes made to the types of the Redux store could potentially require a migration.
+ *
+ * If you're making a change that alters the structure or types of the Redux state,
+ * consider whether existing state stored in users' browsers will still be compatible
+ * with the new types.
+ *
+ * If compatibility could be broken, you may need to create a migration
+ * function that can convert the existing state into a format that's compatible with
+ * the new types, or otherwise adjust the user's persisted state in some way
+ * to prevent undesirable behavior.
+ *
+ * This migration function should be added to the `migrations` object
+ * in our Redux store configuration.
+ *
+ * If no migration is needed, just update the expected types here to fix the typecheck.
+ */
+
+type ExpectedAppState = CombinedState<{
+  user: UserState
+  transactions: TransactionState
+  signatures: SignatureState
+  lists: ListsState
+  application: ApplicationState
+  wallets: WalletState
+  mint: MintState
+  mintV3: MintV3State
+  burn: BurnState
+  burnV3: BurnV3State
+  multicall: ReturnType<typeof multicall.reducer>
+  logs: LogsState
+  [routingApi.reducerPath]: ReturnType<typeof routingApi.reducer>
+}>
+
+assert<Equals<AppState, ExpectedAppState>>()
+
+interface ExpectedUserState {
+  selectedWallet?: ConnectionType
+  lastUpdateVersionTimestamp?: number
+  userLocale: SupportedLocale | null
+  userRouterPreference: RouterPreference
+  userHideClosedPositions: boolean
+  userSlippageTolerance: number | SlippageTolerance.Auto
+  userSlippageToleranceHasBeenMigratedToAuto: boolean
+  userDeadline: number
+  tokens: {
+    [chainId: number]: {
+      [address: string]: SerializedToken
+    }
+  }
+  pairs: {
+    [chainId: number]: {
+      [key: string]: SerializedPair
+    }
+  }
+  timestamp: number
+  URLWarningVisible: boolean
+  hideBaseWalletBanner: boolean
+  showSurveyPopup?: boolean
+  disabledUniswapX?: boolean
+}
+
+assert<Equals<UserState, ExpectedUserState>>()
+
+interface ExpectedTransactionState {
+  [chainId: number]: {
+    [txHash: string]: TransactionDetails
+  }
+}
+
+assert<Equals<TransactionState, ExpectedTransactionState>>()
+
+interface ExpectedListsState {
+  readonly byUrl: {
+    readonly [url: string]: {
+      readonly current: TokenList | null
+      readonly pendingUpdate: TokenList | null
+      readonly loadingRequestId: string | null
+      readonly error: string | null
+    }
+  }
+  readonly lastInitializedDefaultListOfLists?: string[]
+}
+
+assert<Equals<ListsState, ExpectedListsState>>()
+
+interface ExpectedApplicationState {
+  readonly chainId: number | null
+  readonly fiatOnramp: { available: boolean; availabilityChecked: boolean }
+  readonly openModal: ApplicationModal | null
+  readonly popupList: PopupList
+}
+
+assert<Equals<ApplicationState, ExpectedApplicationState>>()
+
+interface ExpectedWalletState {
+  connectedWallets: Wallet[]
+  switchingChain: ChainId | false
+}
+
+assert<Equals<WalletState, ExpectedWalletState>>()
+
+interface ExpectedMintState {
+  readonly independentField: Field
+  readonly typedValue: string
+  readonly otherTypedValue: string
+  readonly startPriceTypedValue: string
+  readonly leftRangeTypedValue: string
+  readonly rightRangeTypedValue: string
+}
+
+assert<Equals<MintState, ExpectedMintState>>()
+
+interface ExpectedMintV3State {
+  readonly independentField: FieldV3
+  readonly typedValue: string
+  readonly startPriceTypedValue: string
+  readonly leftRangeTypedValue: string | FullRange
+  readonly rightRangeTypedValue: string | FullRange
+}
+
+assert<Equals<MintV3State, ExpectedMintV3State>>()
+
+interface ExpectedBurnState {
+  readonly independentField: BurnField
+  readonly typedValue: string
+}
+
+assert<Equals<BurnState, ExpectedBurnState>>()
+
+interface ExpectedBurnV3State {
+  readonly percent: number
+}
+
+assert<Equals<BurnV3State, ExpectedBurnV3State>>()
+
+interface ExpectedLogsState {
+  [chainId: number]: {
+    [filterKey: string]: {
+      listeners: number
+      fetchingBlockNumber?: number
+      results?:
+        | {
+            blockNumber: number
+            logs: Log[]
+            error?: undefined
+          }
+        | {
+            blockNumber: number
+            logs?: undefined
+            error: true
+          }
+    }
+  }
+}
+
+assert<Equals<LogsState, ExpectedLogsState>>()

src/state/transactions/reducer.test.ts

 import { ChainId } from '@uniswap/sdk-core'
 import { createStore, Store } from 'redux'
 
-import { updateVersion } from '../global/actions'
 import reducer, {
   addTransaction,
   cancelTransaction,
@@ -20,32 +19,6 @@ describe('transaction reducer', () => {
     store = createStore(reducer, initialState)
   })
 
-  describe('updateVersion', () => {
-    it('clears old format transactions that do not have info', () => {
-      store = createStore(reducer, {
-        1: {
-          abc: {
-            hash: 'abc',
-          } as any,
-        },
-      })
-      store.dispatch(updateVersion())
-      expect(store.getState()[ChainId.MAINNET]['abc']).toBeUndefined()
-    })
-    it('keeps old format transactions that do have info', () => {
-      store = createStore(reducer, {
-        1: {
-          abc: {
-            hash: 'abc',
-            info: {},
-          } as any,
-        },
-      })
-      store.dispatch(updateVersion())
-      expect(store.getState()[ChainId.MAINNET]['abc']).toBeTruthy()
-    })
-  })
-
   describe('addTransaction', () => {
     it('adds the transaction', () => {
       const beforeTime = new Date().getTime()

src/state/transactions/reducer.ts

 import { createSlice } from '@reduxjs/toolkit'
 import { ChainId } from '@uniswap/sdk-core'
 
-import { updateVersion } from '../global/actions'
 import { SerializableTransactionReceipt, TransactionDetails, TransactionInfo } from './types'
 
 // TODO(WEB-2053): update this to be a map of account -> chainId -> txHash -> TransactionDetails
@@ -80,20 +79,6 @@ const transactionSlice = createSlice({
       }
     },
   },
-  extraReducers: (builder) => {
-    builder.addCase(updateVersion, (transactions) => {
-      // in case there are any transactions in the store with the old format, remove them
-      Object.keys(transactions).forEach((chainId) => {
-        const chainTransactions = transactions[chainId as unknown as number]
-        Object.keys(chainTransactions).forEach((hash) => {
-          if (!('info' in chainTransactions[hash])) {
-            // clear old transactions that don't have the right format
-            delete chainTransactions[hash]
-          }
-        })
-      })
-    })
-  },
 })
 
 export const {

src/state/types.ts

-import { Reducer } from '@reduxjs/toolkit'
-
-import reducer from './reducer'
-
-/* Utility type to extract state type out of a @reduxjs/toolkit Reducer type */
-type GetState<T> = T extends Reducer<infer State> ? State : never
-
-export type AppState = {
-  [K in keyof typeof reducer]: GetState<(typeof reducer)[K]>
-}

src/state/user/hooks.tsx

@@ -12,7 +12,7 @@ import { UserAddedToken } from 'types/tokens'
 
 import { BASES_TO_TRACK_LIQUIDITY_FOR, PINNED_PAIRS } from '../../constants/routing'
 import { useDefaultActiveTokens } from '../../hooks/Tokens'
-import { AppState } from '../types'
+import { AppState } from '../reducer'
 import {
   addSerializedPair,
   addSerializedToken,

src/state/user/reducer.test.ts

 import { createStore, Store } from 'redux'
 import { RouterPreference } from 'state/routing/types'
 
-import { DEFAULT_DEADLINE_FROM_NOW } from '../../constants/misc'
-import { updateVersion } from '../global/actions'
 import reducer, {
   addSerializedPair,
   addSerializedToken,
@@ -16,7 +14,6 @@ import reducer, {
   updateUserSlippageTolerance,
   UserState,
 } from './reducer'
-import { SlippageTolerance } from './types'
 
 function buildSerializedPair(token0Address: string, token1Address: string, chainId: number) {
   return {
@@ -38,36 +35,6 @@ describe('swap reducer', () => {
     store = createStore(reducer, initialState)
   })
 
-  describe('updateVersion', () => {
-    it('has no timestamp originally', () => {
-      expect(store.getState().lastUpdateVersionTimestamp).toBeUndefined()
-    })
-    it('sets the lastUpdateVersionTimestamp', () => {
-      const time = new Date().getTime()
-      store.dispatch(updateVersion())
-      expect(store.getState().lastUpdateVersionTimestamp).toBeGreaterThanOrEqual(time)
-    })
-    it('sets allowed slippage and deadline', () => {
-      store = createStore(reducer, {
-        ...initialState,
-        userDeadline: undefined,
-        userSlippageTolerance: undefined,
-      } as any)
-      store.dispatch(updateVersion())
-      expect(store.getState().userDeadline).toEqual(DEFAULT_DEADLINE_FROM_NOW)
-      expect(store.getState().userSlippageTolerance).toEqual(SlippageTolerance.Auto)
-    })
-    it('sets allowed slippage and deadline to auto', () => {
-      store = createStore(reducer, {
-        ...initialState,
-        userSlippageTolerance: 10,
-        userSlippageToleranceHasBeenMigratedToAuto: undefined,
-      } as any)
-      store.dispatch(updateVersion())
-      expect(store.getState().userSlippageToleranceHasBeenMigratedToAuto).toEqual(true)
-    })
-  })
-
   describe('updateSelectedWallet', () => {
     it('updates the selected wallet', () => {
       store.dispatch(updateSelectedWallet({ wallet: 'metamask' }))

src/state/user/reducer.ts

@@ -4,7 +4,6 @@ import { ConnectionType } from '../../connection/types'
 import { SupportedLocale } from '../../constants/locales'
 import { DEFAULT_DEADLINE_FROM_NOW } from '../../constants/misc'
 import { RouterPreference } from '../../state/routing/types'
-import { updateVersion } from '../global/actions'
 import { SerializedPair, SerializedToken, SlippageTolerance } from './types'
 
 const currentTimestamp = () => new Date().getTime()
@@ -124,85 +123,6 @@ const userSlice = createSlice({
       state.timestamp = currentTimestamp()
     },
   },
-  extraReducers: (builder) => {
-    // After adding a new property to the state, its value will be `undefined` (instead of the default)
-    // for all existing users with a previous version of the state in their localStorage.
-    // In order to avoid this, we need to set a default value for each new property manually during hydration.
-    builder.addCase(updateVersion, (state) => {
-      // If `selectedWallet` is a WalletConnect v1 wallet, reset to default.
-      if (state.selectedWallet) {
-        const selectedWallet = state.selectedWallet as string
-        if (
-          selectedWallet === 'UNIWALLET' ||
-          selectedWallet === 'UNISWAP_WALLET' ||
-          selectedWallet === 'WALLET_CONNECT'
-        ) {
-          delete state.selectedWallet
-        }
-      }
-
-      // If `userSlippageTolerance` is not present or its value is invalid, reset to default
-      if (
-        typeof state.userSlippageTolerance !== 'number' ||
-        !Number.isInteger(state.userSlippageTolerance) ||
-        state.userSlippageTolerance < 0 ||
-        state.userSlippageTolerance > 5000
-      ) {
-        state.userSlippageTolerance = SlippageTolerance.Auto
-      } else {
-        if (
-          !state.userSlippageToleranceHasBeenMigratedToAuto &&
-          [10, 50, 100].indexOf(state.userSlippageTolerance) !== -1
-        ) {
-          state.userSlippageTolerance = SlippageTolerance.Auto
-          state.userSlippageToleranceHasBeenMigratedToAuto = true
-        }
-      }
-
-      // If `userDeadline` is not present or its value is invalid, reset to default
-      if (
-        typeof state.userDeadline !== 'number' ||
-        !Number.isInteger(state.userDeadline) ||
-        state.userDeadline < 60 ||
-        state.userDeadline > 180 * 60
-      ) {
-        state.userDeadline = DEFAULT_DEADLINE_FROM_NOW
-      }
-
-      // If `userRouterPreference` is not present, reset to default
-      if (typeof state.userRouterPreference !== 'string') {
-        state.userRouterPreference = RouterPreference.API
-      }
-
-      // If `userRouterPreference` is `AUTO`, migrate to `API`
-      if ((state.userRouterPreference as string) === 'auto') {
-        state.userRouterPreference = RouterPreference.API
-      }
-
-      //If `buyFiatFlowCompleted` is present, delete it using filtering
-      if ('buyFiatFlowCompleted' in state) {
-        //ignoring due to type errors occuring since we now remove this state
-        //@ts-ignore
-        delete state.buyFiatFlowCompleted
-      }
-
-      // If `buyFiatFlowCompleted` is present, delete it using filtering
-      if ('buyFiatFlowCompleted' in state) {
-        //ignoring due to type errors occuring since we now remove this state
-        //@ts-ignore
-        delete state.buyFiatFlowCompleted
-      }
-
-      //If `buyFiatFlowCompleted` is present, delete it using filtering
-      if ('buyFiatFlowCompleted' in state) {
-        //ignoring due to type errors occuring since we now remove this state
-        //@ts-ignore
-        delete state.buyFiatFlowCompleted
-      }
-
-      state.lastUpdateVersionTimestamp = currentTimestamp()
-    })
-  },
 })
 
 export const {

src/state/wallets/reducer.ts

@@ -4,7 +4,7 @@ import { shallowEqual } from 'react-redux'
 
 import { Wallet } from './types'
 
-interface WalletState {
+export interface WalletState {
   // Used to track wallets that have been connected by the user in current session, and remove them when deliberately disconnected.
   // Used to compute is_reconnect event property for analytics
   connectedWallets: Wallet[]

yarn.lock

@@ -12952,6 +12952,11 @@ image-q@^1.1.1:
   resolved "https://registry.npmjs.org/image-q/-/image-q-1.1.1.tgz"
   integrity sha1-/IQJlmRGC5DKhi2TALa/u7+/gFY=
 
+immediate@~3.0.5:
+  version "3.0.6"
+  resolved "https://registry.yarnpkg.com/immediate/-/immediate-3.0.6.tgz#9db1dbd0faf8de6fbe0f5dd5e56bb606280de69b"
+  integrity sha512-XXOFtyqDjNDAQxVfYxuF7g9Il/IbWmmlQg2MYKOH8ExIT1qg6xc4zyS3HaEEATgs1btfzxq15ciUiY7gjSXRGQ==
+
 immer@^9.0.21, immer@^9.0.6, immer@^9.0.7:
   version "9.0.21"
   resolved "https://registry.npmjs.org/immer/-/immer-9.0.21.tgz#1e025ea31a40f24fb064f1fef23e931496330176"
@@ -14896,6 +14901,13 @@ levn@~0.3.0:
     prelude-ls "~1.1.2"
     type-check "~0.3.2"
 
+lie@3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/lie/-/lie-3.1.1.tgz#9a436b2cc7746ca59de7a41fa469b3efb76bd87e"
+  integrity sha512-RiNhHysUjhrDQntfYSfY4MU24coXXdEOgw9WGcKHNeEwffDYbF//u87M1EWaMGzuFoSbqW0C9C6lEEhDOAswfw==
+  dependencies:
+    immediate "~3.0.5"
+
 lilconfig@^2.0.3, lilconfig@^2.0.5, lilconfig@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/lilconfig/-/lilconfig-2.1.0.tgz#78e23ac89ebb7e1bfbf25b18043de756548e7f52"
@@ -14999,6 +15011,13 @@ loader-utils@^3.2.0:
   resolved "https://registry.yarnpkg.com/loader-utils/-/loader-utils-3.2.1.tgz#4fb104b599daafd82ef3e1a41fb9265f87e1f576"
   integrity sha512-ZvFw1KWS3GVyYBYb7qkmRM/WwL2TQQBxgCK62rlvm4WpVQ23Nb4tYjApUlfjrEGvOs7KHEsmyUn75OHZrJMWPw==
 
+localforage@^1.10.0:
+  version "1.10.0"
+  resolved "https://registry.yarnpkg.com/localforage/-/localforage-1.10.0.tgz#5c465dc5f62b2807c3a84c0c6a1b1b3212781dd4"
+  integrity sha512-14/H1aX7hzBBmmh7sGPd+AOMkkIrHM3Z1PAyGgZigA1H1p5O5ANnMyWzvpAETtG68/dC4pC0ncy3+PPGzXZHPg==
+  dependencies:
+    lie "3.1.1"
+
 locate-path@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-2.0.0.tgz#2b568b265eec944c6d9c0de9c3dbbbca0354cd8e"
@@ -15298,11 +15317,6 @@ merge2@^1.3.0, merge2@^1.4.1:
   resolved "https://registry.yarnpkg.com/merge2/-/merge2-1.4.1.tgz#4368892f885e907455a6fd7dc55c0c9d404990ae"
   integrity sha512-8q7VEgMJW4J8tcfVPy8g09NcQwZdbwFEqhe/WZkoIzjn/3TGDwtOCYtXGxA3O8tPzpczCCDgv+P2P5y00ZJOOg==
 
-merge@2.1.0:
-  version "2.1.0"
-  resolved "https://registry.npmjs.org/merge/-/merge-2.1.0.tgz"
-  integrity sha512-TcuhVDV+e6X457MQAm7xIb19rWhZuEDEho7RrwxMpQ/3GhD5sDlnP188gjQQuweXHy9igdke5oUtVOXX1X8Sxg==
-
 merkletreejs@^0.3.9:
   version "0.3.9"
   resolved "https://registry.yarnpkg.com/merkletreejs/-/merkletreejs-0.3.9.tgz#cdb364a3b974a44f4eff3446522d7066e0cf95de"
@@ -17861,12 +17875,10 @@ reduce-function-call@^1.0.1:
   dependencies:
     balanced-match "^1.0.0"
 
-redux-localstorage-simple@^2.3.1:
-  version "2.4.0"
-  resolved "https://registry.npmjs.org/redux-localstorage-simple/-/redux-localstorage-simple-2.4.0.tgz"
-  integrity sha512-Zj28elJtO4fqXXC+gikonbKhFUkiwlalScYRn3EGUU44Pika1995AqUgzjIcsSPlBhIDV2WudFqa/YI9+3aE9Q==
-  dependencies:
-    merge "2.1.0"
+redux-persist@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/redux-persist/-/redux-persist-6.0.0.tgz#b4d2972f9859597c130d40d4b146fecdab51b3a8"
+  integrity sha512-71LLMbUq2r02ng2We9S215LtPu3fY0KgaGE0k8WRgl6RkqxtGfl7HUozz1Dftwsb0D/5mZ8dwAaPbtnzfvbEwQ==
 
 redux-thunk@^2.4.2:
   version "2.4.2"
@@ -19846,6 +19858,11 @@ ts-transform-graphql-tag@^0.2.1:
   resolved "https://registry.yarnpkg.com/ts-transform-graphql-tag/-/ts-transform-graphql-tag-0.2.1.tgz#f596c491196b6a6a65b65a8b99bf6e2314c78017"
   integrity sha512-gciNzCpVafccayI/VQKU2ROaol4gMpz0t5sAW/jzG/J/wnjPYCn06yKzlM4mkQ5tjCvPmFuZnLYF4i0tUiIiMQ==
 
+tsafe@^1.6.4:
+  version "1.6.4"
+  resolved "https://registry.yarnpkg.com/tsafe/-/tsafe-1.6.4.tgz#048a114761714538c72f16abd25bb247d4e3780e"
+  integrity sha512-l4Z54QFGHO8GF0gBpb3yPGHjkIkIirl8rwW+lMBmtEMzOJeRs8BdjkDEx6nU8Ak9PQVp/KNDtECxTja8MMIDoA==
+
 tsconfig-paths@^3.14.1:
   version "3.14.1"
   resolved "https://registry.yarnpkg.com/tsconfig-paths/-/tsconfig-paths-3.14.1.tgz#ba0734599e8ea36c862798e920bcf163277b137a"