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metamask-extension/app/scripts/migrations/013.js

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/*
This migration modifies the network config from ambiguous 'testnet' to explicit 'ropsten'
*/
import { cloneDeep } from 'lodash';
const version = 13;
export default {
version,
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migrate(originalVersionedData) {
const versionedData = cloneDeep(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);
},
};
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function transformState(state) {
const newState = state;
const { config } = newState;
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if (config && config.provider) {
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if (config.provider.type === 'testnet') {
newState.config.provider.type = 'ropsten';
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}
}
return newState;
}