Merge pull request #4144 from MetaMask/ui-actions-pify-importNewAccount

ui - actions - importNewAccount - use async and pify for cleaner syntax

ui/app/actions.js

@@ -1,4 +1,5 @@
 const abi = require('human-standard-token-abi')
+const pify = require('pify')
 const getBuyEthUrl = require('../../app/scripts/lib/buy-eth-url')
 const { getTokenAddressFromTokenObject } = require('./util')
 const ethUtil = require('ethereumjs-util')
@@ -523,31 +524,26 @@ function addNewKeyring (type, opts) {
 }
 
 function importNewAccount (strategy, args) {
-  return (dispatch) => {
-    dispatch(actions.showLoadingIndication('This may take a while, be patient.'))
-    log.debug(`background.importAccountWithStrategy`)
-    return new Promise((resolve, reject) => {
-      background.importAccountWithStrategy(strategy, args, (err) => {
-        if (err) {
-          dispatch(actions.displayWarning(err.message))
-          return reject(err)
-        }
-        log.debug(`background.getState`)
-        background.getState((err, newState) => {
-          dispatch(actions.hideLoadingIndication())
-          if (err) {
-            dispatch(actions.displayWarning(err.message))
-            return reject(err)
-          }
-          dispatch(actions.updateMetamaskState(newState))
-          dispatch({
-            type: actions.SHOW_ACCOUNT_DETAIL,
-            value: newState.selectedAddress,
-          })
-          resolve(newState)
-        })
-      })
+  return async (dispatch) => {
+    let newState
+    dispatch(actions.showLoadingIndication('This may take a while, please be patient.'))
+    try {
+      log.debug(`background.importAccountWithStrategy`)
+      await pify(background.importAccountWithStrategy).call(background, strategy, args)
+      log.debug(`background.getState`)
+      newState = await pify(background.getState).call(background)
+    } catch (err) {
+      dispatch(actions.hideLoadingIndication())
+      dispatch(actions.displayWarning(err.message))
+      return
+    }
+    dispatch(actions.hideLoadingIndication())
+    dispatch(actions.updateMetamaskState(newState))
+    dispatch({
+      type: actions.SHOW_ACCOUNT_DETAIL,
+      value: newState.selectedAddress,
     })
+    return newState
   }
 }