How do I migrate my Redux Persist storage to a new version?

How do I migrate my Redux Persist storage to a new version?

To migrate your Redux Persist storage, you need to follow these steps: 1. Update your Redux Persist package. 2. Use the createMigrate function to define your migrations. 3. Update your persist config to include the migration.

What if I have custom serialization?

If you have custom serialization, ensure that your migration functions handle the serialization and deserialization processes correctly. You may need to adjust your migration logic to accommodate any changes in your data structure.

Can you show me an example of a migration function?

Sure! Here's a simple example:

const migrations = {
  0: (state) => {
    // migration logic for version 0
    return state;
  },
  1: (state) => {
    // migration logic for version 1
    return {
      ...state,
      newField: 'defaultValue',
    };
  },
};

This function updates the state to include a new field.

How do I test my migrations?

You can test your migrations by creating a test suite that simulates the old state and applies the migration function. Use assertions to verify that the new state matches your expectations.