const version = 5
/*
This migration moves state from the flat state trie into KeyringController substate
*/
const extend = require('xtend')
module.exports = {
version,
migrate: function (versionedData) {
versionedData.meta.version = version
try {
const state = versionedData.data
const newState = selectSubstateForKeyringController(state)
versionedData.data = newState
} catch (err) {
console.warn('MetaMask Migration #5' + err.stack)
}
return Promise.resolve(versionedData)
},
}
function selectSubstateForKeyringController (state) {
const config = state.config
const newState = extend(state, {
KeyringController: {
vault: state.vault,
selectedAccount: config.selectedAccount,
walletNicknames: state.walletNicknames,
},
})
delete newState.vault
delete newState.walletNicknames
delete newState.config.selectedAccount
return newState
}
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