migration 7 - break off TransactionManager substate

1 files changed, 38 insertions, 0 deletions

diff --git a/app/scripts/migrations/007.js b/app/scripts/migrations/007.js
new file mode 100644
index 000000000..3ae8cdc2d
--- /dev/null
+++ b/app/scripts/migrations/007.js
@@ -0,0 +1,38 @@
+const version = 7
+
+/*
+
+This migration breaks out the TransactionManager substate
+
+*/
+
+const extend = require('xtend')
+
+module.exports = {
+  version,  
+
+  migrate: function (versionedData) {
+    versionedData.meta.version = version
+    try {
+      const state = versionedData.data
+      const newState = transformState(state)
+      versionedData.data = newState
+    } catch (err) {
+      console.warn(`MetaMask Migration #${version}` + err.stack)
+    }
+    return Promise.resolve(versionedData)
+  },
+}
+
+function transformState (state) {
+  const newState = extend(state, {
+    TransactionManager: {
+      transactions: state.transactions || [],
+      gasMultiplier: state.gasMultiplier || 1,
+    },
+  })
+  delete newState.transactions
+  delete newState.gasMultiplier
+
+  return newState
+}