constupgrade=require('librarian-1-to-2')upgrade({from: {metadataEngine: oldMetadataEngine,// use options.metadataEngine from your old librarian installstorageEngine: oldStorageEngine// use options.storageEngine from your old librarian install},to: {data: newDataPlugin,// use options.data from your new librarian installstorage: newStoragePlugin// use options.storage from your new librarian install}}).then(function(map){// Map will be an object in this format//// {// "902e53e3": "8262540f-b00f-4bc2-a199-d2a58907dd20",// "302e81e5": "22488f00-f93f-43ed-b32d-14c711cded95",// "08e721e3": "bea4751b-76ac-495f-9bc2-33b0cf0c7899",// "d4e655e8": "efbbd275-b335-4dc3-a867-7c06e088b914",// "34e126e6": "da0c9228-a74c-4df0-9258-927aa44bcae6",// "80e215e1": "b241d502-2fa9-4e87-8443-4773e0d90574",// "02e347e6": "40a00176-4173-40fb-89e7-25b9d0f7aeb8"// }})