migrator/migrator library

Classes

Migration

Single schema migration from from to to.

MigrationContext

Context provided to migrations for deterministic data.

MigrationResult

Result of applying a migration chain.

Migrator

Applies ordered migrations and validates continuity.

Typedefs

MigrationFn = Map<String, dynamic> Function(Map<String, dynamic> payload)

Function that transforms a payload into the next schema version.

MigrationFnWithContext = Map<String, dynamic> Function(Map<String, dynamic> payload, MigrationContext context)

Function that transforms a payload into the next schema version with context.