Merge pull request #3904 from MetaMask/migrations-template

meta - create a migration template

1 files changed, 29 insertions, 0 deletions

diff --git a/app/scripts/migrations/template.js b/app/scripts/migrations/template.js
new file mode 100644
index 000000000..0915c6bdf
--- /dev/null
+++ b/app/scripts/migrations/template.js
@@ -0,0 +1,29 @@
+// next version number
+const version = 0
+
+/*
+
+description of migration and what it does
+
+*/
+
+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
+  // transform state here
+  return newState
+}