SchemaChange: | { fields: Table; name: string; type: "CREATE_TABLE"; } | { name: string; type: "DROP_TABLE"; } | { field: F | CustomField<any>; name: string; tableName: string; type: "ADD_COLUMN"; } | { field: F; name: string; tableName: string; type: "ALTER_COLUMN"; } | { name: string; tableName: string; type: "DROP_COLUMN"; }