Sync each account one by one instead of all accounts

src/internals/accounts/sync.js

@@ -17,9 +17,13 @@ export default (send: Function) => ({
     send('accounts.sync.progress', null, { kill: false })
 
     try {
-      const result = await Promise.all(accounts.map(syncAccount))
+      await Promise.all(
+        accounts.map(a =>
+          syncAccount(a).then(account => send('account.sync.success', account, { kill: false })),
+        ),
+      )
 
-      send('accounts.sync.success', result)
+      send('accounts.sync.success')
     } catch (err) {
       send('accounts.sync.fail', err.stack || err)
     }

src/renderer/events.js

@@ -63,24 +63,30 @@ export function checkUpdates() {
 
 export default ({ store, locked }: { store: Object, locked: boolean }) => {
   const handlers = {
+    account: {
+      sync: {
+        success: account => {
+          if (syncAccounts) {
+            const currentAccountData = getAccountData(store.getState(), account.id) || {}
+            const transactions = uniqBy(
+              [...currentAccountData.transactions, ...account.transactions],
+              tx => tx.hash,
+            )
+
+            if (currentAccountData.transactions.length !== transactions.length) {
+              store.dispatch(syncAccount(account))
+            }
+          }
+        },
+      },
+    },
     accounts: {
       sync: {
-        success: accounts => {
+        success: () => {
           if (syncAccounts) {
-            const currentState = store.getState()
-            accounts.forEach(account => {
-              const currentAccountData = getAccountData(currentState, account.id) || {}
-              const transactions = uniqBy(
-                [...currentAccountData.transactions, ...account.transactions],
-                tx => tx.hash,
-              )
-              if (currentAccountData.transactions.length !== transactions.length) {
-                store.dispatch(syncAccount(account))
-              }
-            })
             syncTimeout = setTimeout(() => {
-              const newAccounts = getAccounts(store.getState())
-              startSyncAccounts(newAccounts)
+              const accounts = getAccounts(store.getState())
+              startSyncAccounts(accounts)
             }, SYNC_ACCOUNT_TIMEOUT)
           }
         },