Merge pull request #4408 from MetaMask/v4.7.0rc2

Version 4.7.0 - rc2

1 files changed, 13 insertions, 0 deletions

diff --git a/ui/app/components/pages/add-token/util.js b/ui/app/components/pages/add-token/util.js
new file mode 100644
index 000000000..579c56cc0
--- /dev/null
+++ b/ui/app/components/pages/add-token/util.js
@@ -0,0 +1,13 @@
+import R from 'ramda'
+
+export function checkExistingAddresses (address, tokenList = []) {
+  if (!address) {
+    return false
+  }
+
+  const matchesAddress = existingToken => {
+    return existingToken.address.toLowerCase() === address.toLowerCase()
+  }
+
+  return R.any(matchesAddress)(tokenList)
+}