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51 lines
1.2 KiB
51 lines
1.2 KiB
7 years ago
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const version = 23
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/*
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This migration removes transactions that are no longer usefull down to 40 total
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*/
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const clone = require('clone')
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module.exports = {
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version,
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migrate: function (originalVersionedData) {
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const versionedData = clone(originalVersionedData)
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versionedData.meta.version = version
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try {
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const state = versionedData.data
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const newState = transformState(state)
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versionedData.data = newState
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} catch (err) {
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console.warn(`MetaMask Migration #${version}` + err.stack)
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}
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return Promise.resolve(versionedData)
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},
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}
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function transformState (state) {
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const newState = state
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const transactions = newState.TransactionController.transactions
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if (transactions.length <= 40) return newState
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let reverseTxList = transactions.reverse()
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let stripping = true
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while (reverseTxList.length > 40 && stripping) {
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let txIndex = reverseTxList.findIndex((txMeta) => {
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return (txMeta.status === 'failed' ||
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txMeta.status === 'rejected' ||
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txMeta.status === 'confirmed' ||
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txMeta.status === 'dropped')
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})
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if (txIndex < 0) stripping = false
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else reverseTxList.splice(txIndex, 1)
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}
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newState.TransactionController.transactions = reverseTxList.reverse()
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return newState
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}
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