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metamask-extension/app/scripts/migrations/037.js
Mark Stacey 398a45bfdd
Replace clone dependency with cloneDeep from lodash (#7926)
This was done to reduce the number of direct dependencies we have. It
should be functionally equivalent. The bundle size should not change,
as we use `clone` as a transitive dependency in a number of places.
2020-01-29 13:14:33 -04:00

55 lines
1.4 KiB
JavaScript

const version = 37
import { cloneDeep } from 'lodash'
import { util } from 'gaba'
/**
* The purpose of this migration is to update the address book state
* to the new schema with chainId as a key.
* and to add the isEns flag to all entries
*/
export default {
version,
migrate: async function (originalVersionedData) {
const versionedData = cloneDeep(originalVersionedData)
versionedData.meta.version = version
const state = versionedData.data
versionedData.data = transformState(state)
return versionedData
},
}
function transformState (state) {
if (state.AddressBookController) {
const ab = state.AddressBookController.addressBook
const chainIds = new Set()
const newAddressBook = {}
// add all of the chainIds to a set
for (const item in ab) {
chainIds.add(ab[item].chainId)
}
// fill the chainId object with the entries with the matching chainId
for (const id of chainIds.values()) {
// make an empty object entry for each chainId
newAddressBook[id] = {}
for (const address in ab) {
if (ab[address].chainId === id) {
ab[address].isEns = false
if (util.normalizeEnsName(ab[address].name)) {
ab[address].isEns = true
}
newAddressBook[id][address] = ab[address]
}
}
}
state.AddressBookController.addressBook = newAddressBook
}
return state
}