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5 changes: 4 additions & 1 deletion src/middleware/persist.ts
Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,10 @@ export interface PersistOptions<S, PersistedState = S> {
* A function to perform persisted state migration.
* This function will be called when persisted state versions mismatch with the one specified here.
*/
migrate?: (persistedState: unknown, version: number) => S | Promise<S>
migrate?: (
persistedState: unknown,
version: number,
) => PersistedState | Promise<PersistedState>
/**
* A function to perform custom hydration merges when combining the stored state with the current one.
* By default, this function does a shallow merge.
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