1 files changed, 19 insertions, 8 deletions
diff --git a/packages/website/ts/local_storage/tracked_token_storage.ts b/packages/website/ts/local_storage/tracked_token_storage.ts
index 051a78ae1..7733e8436 100644
--- a/packages/website/ts/local_storage/tracked_token_storage.ts
+++ b/packages/website/ts/local_storage/tracked_token_storage.ts
@@ -1,26 +1,37 @@
 import * as _ from 'lodash';
-import {localStorage} from 'ts/local_storage/local_storage';
-import {Token, TrackedTokensByNetworkId} from 'ts/types';
+import { localStorage } from 'ts/local_storage/local_storage';
+import { Token, TrackedTokensByUserAddress } from 'ts/types';
+import { configs } from 'ts/utils/configs';
 
 const TRACKED_TOKENS_KEY = 'trackedTokens';
+const TRACKED_TOKENS_CLEAR_KEY = 'lastClearTrackedTokensDate';
 
 export const trackedTokenStorage = {
-    addTrackedTokenToUser(userAddress: string, networkId: number, token: Token) {
+    // Clear trackedTokens localStorage if we've updated the config variable in an update
+    // that introduced a backward incompatible change requiring the tracked tokens to be re-set
+    clearIfRequired(): void {
+        const lastClearFillDate = localStorage.getItemIfExists(TRACKED_TOKENS_CLEAR_KEY);
+        if (lastClearFillDate !== configs.LAST_LOCAL_STORAGE_TRACKED_TOKEN_CLEARANCE_DATE) {
+            localStorage.removeItem(TRACKED_TOKENS_KEY);
+        }
+        localStorage.setItem(TRACKED_TOKENS_CLEAR_KEY, configs.LAST_LOCAL_STORAGE_TRACKED_TOKEN_CLEARANCE_DATE);
+    },
+    addTrackedTokenToUser(userAddress: string, networkId: number, token: Token): void {
         const trackedTokensByUserAddress = this.getTrackedTokensByUserAddress();
         let trackedTokensByNetworkId = trackedTokensByUserAddress[userAddress];
         if (_.isUndefined(trackedTokensByNetworkId)) {
             trackedTokensByNetworkId = {};
         }
-        const trackedTokens = !_.isUndefined(trackedTokensByNetworkId[networkId]) ?
-                                    trackedTokensByNetworkId[networkId] :
-                                    [];
+        const trackedTokens = !_.isUndefined(trackedTokensByNetworkId[networkId])
+            ? trackedTokensByNetworkId[networkId]
+            : [];
         trackedTokens.push(token);
         trackedTokensByNetworkId[networkId] = trackedTokens;
         trackedTokensByUserAddress[userAddress] = trackedTokensByNetworkId;
         const trackedTokensByUserAddressJSONString = JSON.stringify(trackedTokensByUserAddress);
         localStorage.setItem(TRACKED_TOKENS_KEY, trackedTokensByUserAddressJSONString);
     },
-    getTrackedTokensByUserAddress(): TrackedTokensByNetworkId {
+    getTrackedTokensByUserAddress(): TrackedTokensByUserAddress {
         const trackedTokensJSONString = localStorage.getItemIfExists(TRACKED_TOKENS_KEY);
         if (_.isEmpty(trackedTokensJSONString)) {
             return {};
@@ -41,7 +52,7 @@ export const trackedTokenStorage = {
         const trackedTokens = trackedTokensByNetworkId[networkId];
         return trackedTokens;
     },
-    removeTrackedToken(userAddress: string, networkId: number, tokenAddress: string) {
+    removeTrackedToken(userAddress: string, networkId: number, tokenAddress: string): void {
         const trackedTokensByUserAddress = this.getTrackedTokensByUserAddress();
         const trackedTokensByNetworkId = trackedTokensByUserAddress[userAddress];
         const trackedTokens = trackedTokensByNetworkId[networkId];