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make migration more safe (#10689)

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Brad Decker 2021-03-22 10:21:52 -05:00 committed by GitHub
parent a81629e104
commit 1b4504e233
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1 changed files with 12 additions and 1 deletions
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13
app/scripts/migrations/055.js
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@ -17,14 +17,25 @@ export default {
},
};
const UNKNOWN_CHAIN_ID_KEY = 'UNKNOWN';
function transformState(state) {
if (
state?.IncomingTransactionsController?.incomingTxLastFetchedBlocksByNetwork
) {
state.IncomingTransactionsController.incomingTxLastFetchedBlockByChainId = mapKeys(
state.IncomingTransactionsController.incomingTxLastFetchedBlocksByNetwork,
(_, key) => NETWORK_TYPE_TO_ID_MAP[key].chainId,
// using optional chaining in case user's state has fetched blocks for
// RPC network types (which don't map to a single chainId). This should
// not be possible, but it's safer
(_, key) => NETWORK_TYPE_TO_ID_MAP[key]?.chainId ?? UNKNOWN_CHAIN_ID_KEY,
);
// Now that mainnet and test net last fetched blocks are keyed by their
// respective chainIds, we can safely delete anything we had for custom
// networks. Any custom network that shares a chainId with one of the
// aforementioned networks will use the value stored by chainId.
delete state.IncomingTransactionsController
.incomingTxLastFetchedBlockByChainId[UNKNOWN_CHAIN_ID_KEY];
delete state.IncomingTransactionsController
.incomingTxLastFetchedBlocksByNetwork;
}