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Convert the migration template to TypeScript (#17836)

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The migration template has been converted to TypeScript. We can start
writing migrations in TypeScript today; they have no dependencies on
JavaScript modules.
This commit is contained in:
Mark Stacey 2023-02-27 15:16:22 -03:30 committed by GitHub
parent e223348fb3
commit cb113dd2a6
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3 changed files with 32 additions and 33 deletions
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29
app/scripts/migrations/template.js
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@ -1,29 +0,0 @@
// next version number
/*
description of migration and what it does
*/
import { cloneDeep } from 'lodash';
const version = 0;
export default {
version,
async migrate(originalVersionedData) {
const versionedData = cloneDeep(originalVersionedData);
versionedData.meta.version = version;
const state = versionedData.data;
const newState = transformState(state);
versionedData.data = newState;
return versionedData;
},
};
function transformState(state) {
const newState = state;
// transform state here
return newState;
}

8
app/scripts/migrations/template.test.js
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@ -1,13 +1,13 @@
import migrationTemplate from './template'; import { migrate, version } from './template';
const storage = { const storage = {
meta: {}, meta: { version: -1 },
data: {}, data: {},
}; };
describe('storage is migrated successfully', () => { describe('storage is migrated successfully', () => {
it('should work', async () => { it('should work', async () => {
const migratedData = await migrationTemplate.migrate(storage); const migratedData = await migrate(storage);
expect(migratedData.meta.version).toStrictEqual(0); expect(migratedData.meta.version).toStrictEqual(version);
}); });
}); });

28
app/scripts/migrations/template.ts Normal file
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@ -0,0 +1,28 @@
import { cloneDeep } from 'lodash';
export const version = 0;
/**
* Explain the purpose of the migration here.
*
* @param originalVersionedData - Versioned MetaMask extension state, exactly what we persist to dist.
* @param originalVersionedData.meta - State metadata.
* @param originalVersionedData.meta.version - The current state version.
* @param originalVersionedData.data - The persisted MetaMask state, keyed by controller.
* @returns Updated versioned MetaMask extension state.
*/
export async function migrate(originalVersionedData: {
meta: { version: number };
data: Record<string, unknown>;
}) {
const versionedData = cloneDeep(originalVersionedData);
versionedData.meta.version = version;
versionedData.data = transformState(versionedData.data);
return versionedData;
}
function transformState(state: Record<string, unknown>) {
const newState = state;
// transform state here
return newState;
}