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author | kumavis <kumavis@users.noreply.github.com> | 2018-02-28 03:25:29 +0800 |
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committer | GitHub <noreply@github.com> | 2018-02-28 03:25:29 +0800 |
commit | 3fefccd37219c9b4b513fc8d929723e07022b9c4 (patch) | |
tree | 22865ecd672570a6162ac3c9402ec9d63ad3f7ef /app/scripts/migrations/018.js | |
parent | 6a7ea00cd34f83b257f6b4280a5f4e20aa5d34ee (diff) | |
parent | ced62ac551a095c8f94f550f0c01a9d4fd04ce5b (diff) | |
download | tangerine-wallet-browser-3fefccd37219c9b4b513fc8d929723e07022b9c4.tar.gz tangerine-wallet-browser-3fefccd37219c9b4b513fc8d929723e07022b9c4.tar.zst tangerine-wallet-browser-3fefccd37219c9b4b513fc8d929723e07022b9c4.zip |
Merge branch 'master' into mascara-deploy
Diffstat (limited to 'app/scripts/migrations/018.js')
-rw-r--r-- | app/scripts/migrations/018.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/app/scripts/migrations/018.js b/app/scripts/migrations/018.js new file mode 100644 index 000000000..d27fe3f46 --- /dev/null +++ b/app/scripts/migrations/018.js @@ -0,0 +1,52 @@ +const version = 18 + +/* + +This migration updates "transaction state history" to diffs style + +*/ + +const clone = require('clone') +const txStateHistoryHelper = require('../lib/tx-state-history-helper') + + +module.exports = { + version, + + migrate: function (originalVersionedData) { + const versionedData = clone(originalVersionedData) + 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 = state + const transactions = newState.TransactionController.transactions + newState.TransactionController.transactions = transactions.map((txMeta) => { + // no history: initialize + if (!txMeta.history || txMeta.history.length === 0) { + const snapshot = txStateHistoryHelper.snapshotFromTxMeta(txMeta) + txMeta.history = [snapshot] + return txMeta + } + // has history: migrate + const newHistory = ( + txStateHistoryHelper.migrateFromSnapshotsToDiffs(txMeta.history) + // remove empty diffs + .filter((entry) => { + return !Array.isArray(entry) || entry.length > 0 + }) + ) + txMeta.history = newHistory + return txMeta + }) + return newState +} |