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76 lines
2.4 KiB
76 lines
2.4 KiB
4 years ago
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import { cloneDeep } from 'lodash';
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const version = 54;
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function isValidDecimals(decimals) {
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return (
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typeof decimals === 'number' ||
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(typeof decimals === 'string' && decimals.match(/^(0x)?\d+$/u))
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);
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}
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/**
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* Migrates preference tokens with decimals typed as string to number.
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* It also removes any tokens with corrupted or inconvertible decimal values.
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*/
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export default {
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version,
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async migrate(originalVersionedData) {
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const versionedData = cloneDeep(originalVersionedData);
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versionedData.meta.version = version;
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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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return 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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if (!newState.PreferencesController) {
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return newState;
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}
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const tokens = newState.PreferencesController.tokens || [];
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// Filter out any tokens with corrupted decimal values
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const validTokens = tokens.filter(({ decimals }) =>
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isValidDecimals(decimals),
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);
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for (const token of validTokens) {
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// In the case of a decimal value type string, convert to a number.
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if (typeof token.decimals === 'string') {
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// eslint-disable-next-line radix
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token.decimals = parseInt(token.decimals);
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}
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}
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newState.PreferencesController.tokens = validTokens;
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const { accountTokens } = newState.PreferencesController;
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if (accountTokens && typeof accountTokens === 'object') {
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for (const address of Object.keys(accountTokens)) {
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const networkTokens = accountTokens[address];
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if (networkTokens && typeof networkTokens === 'object') {
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for (const network of Object.keys(networkTokens)) {
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const tokensOnNetwork = networkTokens[network] || [];
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// Filter out any tokens with corrupted decimal values
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const validTokensOnNetwork = tokensOnNetwork.filter(({ decimals }) =>
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isValidDecimals(decimals),
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);
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// In the case of a decimal value type string, convert to a number.
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for (const token of validTokensOnNetwork) {
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if (typeof token.decimals === 'string') {
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// eslint-disable-next-line radix
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token.decimals = parseInt(token.decimals);
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}
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}
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networkTokens[network] = validTokensOnNetwork;
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}
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}
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}
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}
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newState.PreferencesController.accountTokens = accountTokens;
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return newState;
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}
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