null & undefined handling

src/blockchain/wallet.js

@@ -106,13 +106,21 @@ function discoverVaults(owner) {
 
 const doDiscoverVaults = new SingletonCoroutine(_discoverVaults, 50, false)
 async function _discoverVaults(owner) {
-  console.log('_discoverVaults',owner)
   const result = []
+  const s = useStore()
+  if( !owner || !s.chainId || !s.account) {
+    s.vaults = []
+    return
+  }
   // todo multi-vault scan
+  // console.log('_discoverVaults',owner)
   const num = 0
   const addr = vaultAddress(owner, num)
-  console.log(`vault ${num} at`, addr)
-  const s = useStore()
+  // console.log(`vault ${num} at`, addr)
+  if( addr === null ) {
+    s.vaults = []
+    return
+  }
   const vault = new ethers.Contract(addr, vaultAbi, s.provider)
   let version = -1
   try {
@@ -127,7 +135,7 @@ async function _discoverVaults(owner) {
   catch (e) {
     console.log(`no vault ${num}`)
   }
-  if( s.account === owner ) { // double-check the account since it could have changed during our await
+  if( s.account == owner ) { // double-check the account since it could have changed during our await
     s.vaults = result
     if( pendingOrders.length )
       if( result.length )