1 files changed, 49 insertions, 0 deletions
diff --git a/app/scripts/migrations/030.js b/app/scripts/migrations/030.js
new file mode 100644
index 000000000..10f7d33b2
--- /dev/null
+++ b/app/scripts/migrations/030.js
@@ -0,0 +1,49 @@
+// next version number
+const version = 30
+
+/*
+
+removes invalid chaids from preferences and networkController for custom rpcs
+
+*/
+
+const clone = require('clone')
+
+module.exports = {
+  version,
+
+  migrate: async function (originalVersionedData) {
+    const versionedData = clone(originalVersionedData)
+    versionedData.meta.version = version
+    const state = versionedData.data
+    const newState = transformState(state)
+    versionedData.data = newState
+    return versionedData
+  },
+}
+
+function transformState (state) {
+  const newState = state
+  if (state.PreferencesController) {
+    const frequentRpcListDetail = newState.PreferencesController.frequentRpcListDetail
+    if (frequentRpcListDetail) {
+      frequentRpcListDetail.forEach((rpc, index) => {
+        if (!!rpc.chainId && Number.isNaN(parseInt(rpc.chainId))) {
+          delete frequentRpcListDetail[index].chainId
+        }
+      })
+      newState.PreferencesController.frequentRpcListDetail = frequentRpcListDetail
+    }
+  }
+  if (state.NetworkController) {
+    if (newState.NetworkController.network && Number.isNaN(parseInt(newState.NetworkController.network))) {
+      delete newState.NetworkController.network
+    }
+
+    if (newState.NetworkController.provider && newState.NetworkController.provider.chainId && Number.isNaN(parseInt(newState.NetworkController.provider.chainId))) {
+      delete newState.NetworkController.provider.chainId
+    }
+  }
+
+  return newState
+}