• Added support for service version 2023-11-03.
• Added method to generate audience for blob servcie for a storage account.

• Includes all features released in 12.16.0-beta.1.

• Added support for service version 2023-08-03.
• Added rehydrate-pending-to-cold value to ArchiveStatus enum.

• Includes all features released in 12.15.0.

• Added support for service version 2023-01-03.

• Includes all features released in 12.14.0-beta.1.

• Fixed an issue of: StoragePipelineOptions is not passed into constructors for blob clients correctly when using undefined as credential parameter.

• Added support for service version 2022-11-02.

• Includes all features released in 12.13.0-beta.1.
• Added BlobDownloadHeaders.createdOn property for interface BlobClient.Download().

• Fixed an issue of getting 403 error for file or directory name with './' or '../'

• Added support for service version 2021-12-02.
• Added support for Blob Cold Tier.

• Fixed bug where IncrementalCopyOfEarlierVersionSnapshotNotAllowed was spelled incorrectly.

• Update dependency @azure/core-http version to ^3.0.0.

• Includes all features released in 12.12.0-beta.1.

• Fixed an issue of escaping slashes in blob name unnecessarily.

• Added support for service version 2021-10-04.

• Fixed a hang issue in BlobClient.downloadToBuffer when encountering transient network failure.
• Refined URL parsing method to let it be able to correctly parse URLs with account name in path.

• Includes all features released in 12.11.0-beta.1.

• Added support for service version 2021-08-06.

• Includes all features released in 12.10.0-beta.1.

• Refined user-agent value to avoid failure when os information is not available on some platforms.
• Fix an issue of not returning raw blob properties in ContainerClient.listBlobsFlat() and ContainerClient.listBlobsByHierarchy().

• Added support for service version 2021-06-08.
• Added pageable output of PageBlobClient.listPageRanges() and PageBlobClient.listPageRangesDiff().
• Added ability to copy source blob tags for BlobClient.syncCopyFromURL().

• Fix incorrect browser mapping path for BufferScheduler.js
• Add react-native mapping to ESM entrypoint

• Includes all features released in 12.9.0-beta.1, 12.9.0-beta.2, 12.9.0-beta.3 and 12.9.0-beta.4.

• Fixed an issue of always sending x-ms-encryption-algorithm header in request.

• Added ability to specify Disk Compute AAD Audience in StoragePipelineOptions.

• Set correct content length in requests for uploading operations to avoid unexpected failure if customized content length is incorrect.

• Added support for service version 2021-04-10.
• Added support for finding blobs by tags in a container.

• Fixed a bug where customized ProxyOptions is overwrited by a default one when initializing BlobServiceClient, BlobClient, AppendBlobClient, BlockBlobClient, PageBlobClient or ContainerClient with connection string.

• Added support for service version 2021-02-12
• Added support for listing system containers with BlobServiceClient.listContainers().
• Added support for blob names container invalid XML characters.

• Added support for service version 2020-12-06.
• Added support for Encryption Scope SAS.
• Added support for Encryption Scopes with BlobBaseClient.SyncCopyFromUriAsync().
• Added support for generating SAS URLs with the Permanent Delete ('y') SAS permission.

• Includes all features released in 12.8.0-beta.1.

• Support for Node.js 8 and IE 11 has been dropped. Please see our support policy for more details.
• Changed TS compilation target to ES2017 in order to produce smaller bundles and use more native platform features
• Updated our internal core package dependencies to their latest versions in order to add support for Opentelemetry 1.0.0 which is compatible with the latest versions of our other client libraries.

• Added support for service version 2020-10-02.
• Added support for Immutable Storage with Versioning
  • Added BlobClient.setImmutibilityPolicy()
  • Added BlobClient.seleteImmutabilityPolicy()
  • Added BlobClient.setLegalHold()
• Added support for listing deleted root blobs with versions ContainerClient.listBlobFlat() and ContainerClient.listBlobHierarchy().
• Added support for OAuth copy sources for synchronous copy operations.
• Added support for Parquet as an input format in BlockBlobClient.query().
• With the dropping of support for Node.js versions that are no longer in LTS, the dependency on @types/node has been updated to version 12. Read our support policy for more details.

• Includes all features released in 12.6.0-beta.1.

• Updated Azure Storage Service API version to 2020-08-04.
• Restoring deleted container doesn't support renaming anymore, deprecated destinationContainerName in ServiceUndeleteContainerOptions for BlobServiceClient.undeleteContainer().

• Includes all features released in 12.5.0-beta.1.

• Now support Batch operations scoped to the Container level. You can use ContainerClient.getBlobBatchClient() to get such a BlobBatchClient.

• Fixed a compile failure due to "Can't resolve 'crypto'" in Angular. Issue #13267.
• Fixed an issue that the download stream returned by BlobClient.download won't release underlying resources unless it's fully consumed. Isssue #11850.
• Fixed an error when listing blob with a metadata key of _ issue #9197
• The "Unclosed root tag" XML parser error is now retriable. PR #13076.

• Added a new from(permissionLike) function to AccountSASPermissions, BlobSASPermissions and ContainerSASPermissions for creating such a permission from a raw permission-like object. Addressed issue 9714.

• Updated Azure Storage Service API version to 2020-04-08.
• Added a new interface BlockBlobClient.syncUploadFromURL() to support creating a new Block Blob where the contents of the blob are read from a given URL.
• Blob Tags updates: BlobClient.setTags() and BlobClient.getTags() now support the LeaseAccessConditions and BlobServiceClient.findBlobsByTags() will return all matching tags for each blob.
• Added generateSasUrl to BlobClient and ContainerClient to generate a service-level SAS URI for the client.
• Added generateAccountSasUrl to BlobServiceClient to generate an account-level SAS URI for the client.
• Fixed a bug where the credential property of the StorageClient is not set correctly when using a Token credential. Fixed bug 12219.
• Blob Batch operations now reorder the subresponses in the client side to perserve the original input order. See BlobBatchClient.submitBatch() and 12335.
• Won't remove the first space in the userAgentOptions.userAgentPrefix passed to the newPipeline() now. Fixed bug 7536.
• Added isHierarchicalNamespaceEnabled to the response of BlobServiceClient.getAccountInfo().

• Added BlockBlobClient.uploadData(data: Buffer | Blob | ArrayBuffer | ArrayBufferView, options) for parallel uploading. It's avaiable in both Node.js and browsers.
• Added new SAS permissions Move(m) and Execute(e) for Blob and Container. Also supports specifying an authorized object ID via saoid and a correlation ID via scid for user delegation SAS.

• Updated Azure Storage Service API version to 2020-02-10.
• Added support for Blob Last Access Time tracking.
• Added support for Blob Query Arrow output format.
• Added support for Container Soft Delete.

• Bug fix - Fixes an issue whereBlockBlobClient.uploadStream() will give an "Invalid Verb" error when keep-alive is enabled. Fixed bug 11187.

• Added RehydratePriority to BlobProperties and BlobItemProperties.
• Fixed BlockBlobClient.uploadStream() to support bufferSize larger than buffer.constants.MAX_LENGTH.
• Added support for Object Replication Service.
• Added custom domain support.
• Supported Append Blob Seal.
• Supported tags conditional operations.
• The Static Website Service now supports a DefaultIndexDocumentPath for a global HTTP 200 route within the static website. You can get it by BlobServiceClient.getProperties() and set it via blobServiceClient.setProperties().
• Bug fix - credential parameter of newPipeline() function is now optional. If not specified, AnonymousCredential is used. Fixes bug 9628.
• Bug fix - high level upload functions BlockBlobClient.uploadFile(), BlockBlobClient.uploadStream() and BlockBlobClient.uploadBrowserData() now support setting tier. Fixes bug 9062.
• Optimized error semantic for listBlobsByHierarchy(). Using listBlobsByHierarchy() with empty delimiter will now fail-fast.
• Bug fix - Content-Length header is no more ignored. Fixes bugs 8903, 9300 and 10614.

• Updated Azure Storage Service API version to 2019-12-12.
• Supported quick query. Added a new API BlockBlobClient.query().
• Supported blob versioning.
• Supported blob tags.
• Increased the maximum block size for Block Blob from 100MiB to 4000MiB(~4GB). And thereby supporting ~200TB maximum size for Block Blob.
• Added convenience method createIfNotExists for ContainerClient, AppendBlobClient and PageBlobClient.
• Added convenience method deleteIfExists for ContainerClient and BlobClients.

• Fix data corruption failure error issue #6411 when downloading compressed files. PR #7993
• Fix un-handled TypeError issue #8499 in Electron applications. PR #8568
• Updated to use @opentelemetry/api 0.6.1 via @azure/core-tracing. PR #7998
• Updated to use typescript 3.8.3. PR #8659

• Bug fix - Blob SAS's sr field is now properly set when generating SAS for a blob using a stored policy with signedpermissions. For more details about Service SAS, please refer to link.
• Fixed unexpected hang issue when uploading empty body. Fixed bug 6904.

• Updated Azure Storage Service API version to 2019-07-07.
• Add support for Encryption Scope, which is similar to regular CPK, except the encryption key is provided by name.
• MD5 and CRC headers for Blob Copy: add contentMD5and xMsContentCrc64 to BlobCopyFromURLHeaders and sourceContentMD5 to BlobSyncCopyFromURLOptions.
• Add getPageRangesDiffForManagedDisks to PageBlobClient.
• Fixed a bug where the package didn't work as expected when bundling web applications. PR #7298

• Bug fix - Name properties on clients now support more kinds of endpoints(IPv4/v6 hosts, single word domains). PR #6753

• Service clients now share a single http client instance by default. PR #6657

  Previously, a new http client was created for each service client if none was provided by the user. This could result in TCP port exhaustion under heavy usage with the keepAlive option enabled because each http client has its own persistent TCP connection. This change creates a single http client instance which is shared among all service clients by default.

• Updated to use OpenTelemetry 0.2 via @azure/core-tracing
• Bug Fix - Convert empty prefixes ("") to undefined when passed as options to the listContainers, listBlobsFlat, and listBlobsByHierarchy methods to avoid sending an invalid request to the service. Fixes bug 5817.
• Added a warning to the documentation of downloadToBuffer that explains the limitations of Node.js Buffer sizes to around 2GB on 64-bit architectures and 1GB on 32-bit architectures.
• Documented the behavior of getProperties methods with respect to metadata keys and their casing inconsistency when compared to the metadata keys returned through corresponding "list" methods with the includeMetadata option.

• This release marks the general availability of the @azure/storage-blob package.
• Bug Fix - Previous versions of @azure/storage-blob preview library failed for React apps because of the usage of fs.stat method which is not available in browsers and due to the presence of some circular dependencies. Both of these issues are fixed in this new release.
• [Breaking] The custom browser and retry policies that are specific to the Storage libraries have been renamed to have the Storage prefix. PR 5862. Below are the entities that now have the Storage prefix
  • BrowserPolicy
  • BrowserPolicyFactory
  • RetryPolicy
  • RetryPolicyType
  • RetryOptions
  • RetryPolicyFactory
• [Breaking] LeaseClient is renamed to BlobLeaseClient. The helper method getLeaseClient on both BlobClient and ContainerClient is renamed to getBlobLeaseClient.
• [Breaking] The properties in the StoragePipelineOptions interface have been updated as below:
  • The proxy property of type ProxySettings | string has been renamed to proxyOptions and will be of type ProxyOptions. If you have been passing url directly, split the value into host and port then pass it as a json object.
  • The telemetry property of type TelemetryOptions has been renamed to userAgentOptions of type UserAgentOptions.
  • The logger is no longer a property available to configure. To enable logging, please see the Troubleshooting section of our readme.
  • The UniqueRequestIdPolicy and KeepAlivePolicy are no longer exported from this library. The corresponding policies from the @azure/core-http library are meant to be used instead.
• beginCopyFromURL is added to the BlobClient, it returns a poller that can be used to watch the status of a copy operation. It also supports cancelling a pending copy.
• Updates to BlockBlobClient.uploadStream
  • [Breaking] maxBuffers attribute of is renamed to maxConcurrency
  • Added default values for parameters, bufferSize = 8MB and maxConcurrency = 5
• [Breaking] Bug Fix - The page object returned from ContainerClient.listContainers had its containerItems property set to an empty string instead of an empty array if the storage account has no blob containers. The issue is fixed in this new release.
• BlobClient.downloadToBuffer() helper method has a new overload where it is not required to pass the Buffer. Attributes offset and count are optional, downloads the entire blob if they are not provided.
• [Breaking] The default browser bundle has been removed from the npm package. Bundling your application with a bundler such as Webpack is the recommended approach to building a browser bundle. For details on how to do this, please refer to our bundling documentation.

• [Breaking] IPRange is renamed to SasIPRange. PR #5551

• Created new interface CommonOptions. This interface is for standard options that apply to all methods that invoke remote operations. This interface currently contains options that enable client-side tracing of the SDK. PR #5550

• [Breaking] Models is no longer exported in public API surface. Instead generated model types required by the public API are explicitly re-exported. In the case where convenience layer already defined a type with conflicting name, the model type is aliased with Model suffix. PR #5567

• [Breaking] Cancelling an operation now throws a standardized error with the name AbortError. PR #5633

• [Breaking] blobName on AppendBlobClient, BlobClient, BlockBlobClient and PageBlobClient is renamed to name. PR #5613

• [Breaking] New BlobBatchClient allowing batched requests to the Azure Storage Blob service. PR #5634

  • Renamed BatchRequest to BlobBatch, flattened BatchDeleteRequest and BatchSetTierRequest into BlobBatch
  • Moved submitBatch code from BlobServiceClient into new BlobBatchClient, created new deleteBlobs and setBlobsAccessTier helpers on BlobBatchClient BlobBatchClient contains setBlobsAccessTier, submitBatch and deleteBlobs helper methods. BlobBatch represents an aggregated set of operations on blobs, delete and setAccessTier functionalities are supported currently.

• [Breaking] Flattened the conditions type BlobRequestConditions instead of current nested one. It replaces ContainerAccessConditions and BlobAccessConditions. In addition, various conditions fields are renamed into simply conditions except sourceModifiedAccessConditions which is renamed to sourceConditions. This makes it more convenient to pass in conditional request options. PR #5672.

  An example:

  {
    blobAccessConditions: {
      modifiedAccessConditions: {
        ifMatch: uploadResponse.eTag
    }
  }

  turns into

  {
    conditions: {
      ifMatch: uploadResponse.eTag
  }

• [Breaking] eTag attribute is renamed to etag. PR #5674

• [Breaking] body field from RestError Object in core-http Library is removed, the response property on the error will now have the parsedBody & headers along with raw body & headers that are already present. PRs #5670, #5437

  • Errors from the storage service can be seen in an extra field details with the expected error code. #5688

• [Breaking] progress callback in the option bags of all the helper methods is renamed to onProgress. PR #5676

• [Breaking] Consolidated PageRange and ClearRange types. They now have offset and count attributes as opposed to the older start and end attributes. PR #5632

• [Breaking] Type of the permissions attribute in the options bag BlobSASSignatureValues to be passed into generateBlobSASQueryParameters is changed to BlobSASPermissions from type string. PR #5626

  • Similarly, AccountSASPermissions for generateAccountSASQueryParameters instead of type string.
  • Example - permissions attribute in generateBlobSASQueryParameters
    • permissions: BlobSASPermissions.parse("racwd").toString() changes to BlobSASPermissions.parse("racwd")

• Renames for following Options interfaces. PR #5650

  • DownloadFromBlobOptions -> BlobDownloadToBufferOptions,
  • UploadStreamToBlockBlobOptions -> BlockBlobUploadStreamOptions,
  • UploadToBlockBlobOptions -> BlockBlobParallelUploadOptions

• [Breaking] Appropriate attribute renames in all the interfaces. PRs #5580,#5630

  • Example - nextMarker -> continuationToken, HTTPClient -> HttpClient, permission -> permissions, parallelism -> concurrency

• Bug fix - Name properties on clients now support the Emulator. PR #5557

  • emulator url when the blobEndpoint is http://127.0.0.1:10000/devstoreaccount1 supported
  • emulator connection string shorthands are supported
    • UseDevelopmentStorage=true
    • (with proxyURI) UseDevelopmentStorage=true;DevelopmentStorageProxyUri=proxyURI

• [Breaking] encrypted attribute is removed from BlobMetadata interface. PR #5612

• [Breaking] Return type of downloadToBuffer helper method on BlobClient is changed to Promise<Buffer> from Promise<void> PR #5624

• [Breaking] IE11 needs Object.assign polyfill loaded. PR #5727

• [Breaking] Replace string array with boolean flags to specify dataset to include when listing containers or blobs.
  • For listing containers Before this change the option is specified as

    blobServiceClient.listContainers({
      include: "metadata",
    });

    After this change:

    blobServiceClient.listContainers({
      includeMetadata: true,
    });

  • For listing blobs Before this change the option is specified as

    containerClient.listBlobsFlat({
      include: ["snapshots", "metadata", "uncommittedblobs", "copy", "deleted"],
    });

    After this change:

    containerClient.listBlobsFlat({
      includeCopy: true,
      includeDeleted: true,
      includeMetadata: true,
      includeSnapshots: true,
      includeUncommitedBlobs: true,
    });

• [Breaking] BlobClient.setTier() is renamed to BlobClient.setAccessTier().
• [Breaking] Fixed typo - chanageLease -> changeLease, a method on LeaseClient.
• Library tries to load the proxy settings from the environment variables like HTTP_PROXY if the proxy settings are not provided when clients like BlobServiceClient or BlobClient are instantiated.
• Added development connection string support to connect to the storage emulator Azurite - Extension for VS Code
  • Development Connection String
    • DefaultEndpointsProtocol=http;AccountName=devstoreaccount1;AccountKey=Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw==;BlobEndpoint=http://127.0.0.1:10000/devstoreaccount1;
  • Shorthand notation is also supported
    • UseDevelopmentStorage=true (or UseDevelopmentStorage=true;DevelopmentStorageProxyUri=http://myProxyUri)
• Added name properties on all the clients for convenience.
  • accountName is added to AppendBlobClient, BlobClient, BlobServiceClient, BlockBlobClient, ContainerClient and PageBlobClient.
  • containerName is added to AppendBlobClient, BlobClient, BlockBlobClient, ContainerClient and PageBlobClient.
  • blobName is added to AppendBlobClient, BlobClient, BlockBlobClient and PageBlobClient.
• [Breaking] Models.StorageServiceProperties is renamed to Models.BlobServiceProperties
• [Breaking] Models.StorageServiceStats is renamed to Models.BlobServiceStatistics
• [Breaking] UserDelegationKey.signedOid is renamed to UserDelegationKey.signedObjectId. UserDelegationKey.signedTid is renamed to UserDelegationKey.signedTenantId.

• [Breaking] RawTokenCredential is dropped. TokenCredential implementations can be found in the @azure/identity library for authentication.
• Updated Azure Storage Service API version to 2019-02-02.
• A new API BlobServiceClient.submitBatch() supports Blob Batch operation which allows multiple requests to be sent within a single request body.
• Added support for customer provided encryption key.
• Added support for rehydrate priority with additional option to methods BlobClient.startCopyFromURL() and BlobClient.setTier().
• APIs BlobClient.startCopyFromURL(), BlockBlobClient.upload(), BlockBlobClient.commitBlockList() and PageBlobClient.create() now support set the blob tier within the API call.
• Responses for all APIs now return x-ms-client-request-id through clientRequestId that was passed in on the request from client-side.
• Exposed options to accept CRC64 as a transactional data integrity mechanism for data transfer APIs.
• Added overloads of generateBlobSASQueryParameters functions to generate user delegation SAS.
• expiry and start in AccessPolicy are now optional in ContainerClient.setAccessPolicy and ContainerClient.getAccessPolicy.
• Exported HttpRequestBody type for who wants to implement a customized HTTP client.
• Fixed a bug of BlobClient.downloadToBuffer() when provided offset is not 0.
• Fixed a bug that Aborter cannot work during retry interval.
• Fixed a bug that Aborter throws timeout error even though it succeeds of BlockBlobClient.download().
• Fixed a bug that "err.code.toUpperCase is not a function" when retries in browser.
• Export RetryPolicyType.
• Aborter doesn't require dom as tsconfig lib requirement anymore for Event type.
• Service SAS generation now supports snapshot access control from 2018-11-09 in generateBlobSASQueryParameters().
• Service SAS generation now supports snapshot access control from API version 2018-11-09 in generateBlobSASQueryParameters().
• A new API PageBlobClient.uploadPagesFromURL() allows pages in a page blob to be written using a range of another blob as a source. This permits synchronous server-side copies to be orchestrated for page blobs of any size.
• A new API AppendBlobClient.appendBlockFromURL() commits a new block of data to the end of an append blob. Method uses a range of another blob as a source. This permits synchronous server-side copies to be orchestrated for append blobs of any size.
• A new API BlobClient.syncCopyFromURL() allows a block blob to be copied synchronously using a URL as a source. This API has a maximum size of 256 MB and preserves metadata and block list.
• A new API BlobServiceClient.getUserDelegationKey() added to get a key that can be used to generate a user delegation SAS (shared access signature).
• Updated HTTP client from axios to node-fetch in Node.js runtime.
• A new option keepAliveOptions added to parameter of newPipeline() which controls keep-alive configurations. Keep-alive is enabled by default.
• Pass through options.abortSignal to the optional abortSignal attribute in option bags instead of using AbortSignal.none as the default value when options.abortSignal is not specified.
• Basic HTTP proxy authentication support is added. Proxy settings can be passed in the options while creating a new client. Example - typescript/proxyAuth.ts
• Connection strings for explicit storage endpoints are supported. - Configure Azure Storage connection strings

• Updated Azure Storage Service API version to 2019-02-02.
• A new API ServiceURL.submitBatch() supports Blob Batch operation which allows multiple requests to be sent within a single request body.
• Added support for customer provided encryption key.
• Added support for rehydrate priority with additional option to methods BlobURL.startCopyFromURL() and BlobURL.setTier().
• APIs BlobURL.startCopyFromURL(), BlockBlobURL.upload(), BlockBlobURL.commitBlockList() and PageBlobURL.create() now support set the blob tier within the API call.
• Responses for all APIs now return x-ms-client-request-id through clientRequestId that was passed in on the request from client-side.
• Exposed options to accept CRC64 as a transactional data integrity mechanism for data transfer APIs.

• Added overloads of generateBlobSASQueryParameters functions to generate user delegation SAS.
• expiry and start in AccessPolicy are now optional in ContainerURL.setAccessPolicy and ContainerURL.getAccessPolicy.

• [Breaking] Aborter class is no longer exposed from the package. Use the package @azure/abort-controller to pass an abort signal to any of the async operations. AbortController.timeout(<milliseconds>) can be utitlized as an abort signal.
• Generalized the credential parameter in client constructors to support {SharedKeyCredential | AnonymousCredential | TokenCredential} credentials as a union type.
• Storage service allows SAS connection string with SAS string and endpoints along with the Account connection string(account name, key and endpoint). In this preview, SAS connection string support is added to the existing connection string client constructors and static methods.
  • Account connection string example - DefaultEndpointsProtocol=https;AccountName=myaccount;AccountKey=accountKey;EndpointSuffix=core.windows.net
  • SAS connection string example - BlobEndpoint=https://myaccount.blob.core.windows.net/;QueueEndpoint=https://myaccount.queue.core.windows.net/;FileEndpoint=https://myaccount.file.core.windows.net/;TableEndpoint=https://myaccount.table.core.windows.net/;SharedAccessSignature=sasString
  • SAS connection string is supported in both NodeJS and browser runtimes unlike the Account Connection String which is supported only in the NodeJS runtime.

• Updated Azure Storage Service API version to 2018-11-09.
• Improved comments for BlockBlobURL.upload().
• Exported HttpRequestBody type for who wants to implement a customized HTTP client.
• Fixed a bug of downloadBlobToBuffer() and downloadAzureFileToBuffer() when provided offset is not 0.
• Fixed a bug that Aborter cannot work during retry interval.
• Fixed a bug that Aborter throws timeout error even though it succeeds of BlockBlobUrl.download().
• Fixed a bug that "err.code.toUpperCase is not a function" when retries in browser.
• Export RetryPolicyType.
• Aborter doesn't require dom as tsconfig lib requirement anymore for Event type.
• Service SAS generation now supports snapshot access control from 2018-11-09 in generateBlobSASQueryParameters().
• Service SAS generation now supports snapshot access control from API version 2018-11-09 in generateBlobSASQueryParameters().
• A new API PageBlobURL.uploadPagesFromURL() allows pages in a page blob to be written using a range of another blob as a source. This permits synchronous server-side copies to be orchestrated for page blobs of any size.
• A new API AppendBlobURL.appendBlockFromURL() commits a new block of data to the end of an append blob. Method uses a range of another blob as a source. This permits synchronous server-side copies to be orchestrated for append blobs of any size.
• A new API BlobURL.syncCopyFromURL() allows a block blob to be copied synchronously using a URL as a source. This API has a maximum size of 256 MB and preserves metadata and block list.
• A new API ServiceURL.getUserDelegationKey() added to get a key that can be used to generate a user delegation SAS (shared access signature).
• Updated HTTP client from axios to node-fetch in Node.js runtime.
• A new option keepAliveOptions added to parameter of StorageURL.newPipeline() which controls keep-alive configurations. Keep-alive is enabled by default.

• [Breaking] Client types are renamed from *URL to *Client. BlobURL, BlockBlobURL, ContainerURL, ServiceURL, StorageURL to BlobClient, BlockBlobClient, ContainerClient, BlobServiceClient, StorageClient respectively.
• [Breaking] Aborter parameters are now moved into option bags.
  • abortSignal attrubute(optional) in the option-bag of respective module has to be utitlized for the Aborter.timeout(<milliseconds>) functionality.
  • Aborter.none is the default value.
• [Breaking] I- prefixes are removed from interface names
  • Example- IBlobDownloadOptions is updated to BlobDownloadOptions, the new names must to be used.
• [Breaking] The static methods to create client types are removed. The functionality is moved into new instance methods added to the parent clients.
• [Breaking] The telemetry strings have been updated.
  • Azure-Storage/${SDK_VERSION} is updated to azsdk-js-storagefile/${SDK_VERSION}.
• [Breaking] withPipeline method is removed.
• Async iterators with pagination support are added for listing methods
  • listContainers(), listBlobsFlat() and listBlobsByHierarchy()
  • Please refer to the samples for async iterators in the samples folder.
• [Breaking] Methods that list segments(listBlobFlatSegment() and listContainersSegment()) are no longer exposed in public api.
• [Breaking] High level convenience functions are moved into clients as their instance member function.
  • uploadFileToBlockBlob(), uploadStreamToBlockBlob() and uploadBrowserDataToBlockBlob() -> BlockBlobClient.uploadFile(), BlockBlobClient.uploadStream() and BlockBlobClient.uploadBrowserData() respectively
  • downloadBlobToBuffer() -> BlobClient.downloadToBuffer()
• [Breaking] StorageClient is no longer exposed. StorageClient.newPipeline() static method is moved to the top level exported function newPipeline().
• [Breaking] TokenCredential has been renamed to RawTokenCredential to make way for the new @azure/identity library's TokenCredential interface.
• [Breaking] Blob/Container member methods that manage leases are removed. A new type LeaseClient is added to manage leases.
• Updated dependency @azure/ms-rest-js to @azure/core-http.
• Constructor overloads added into client types so they can be constructed from a url and a pipeline/credential and connection string.
  • Constructors with overloads - AppendBlobClient, BlobClient, BlobServiceClient, BlockBlobClient, ContainerClient and PageBlobClient
  • Connection string method is supported only in Node.js (not browsers).
• Creation/Deletion of child resources are duplicated to parent client type.
• HTTP proxy support is added (Node.js only).
  • Please refer to the proxyAuth.ts sample in the samples/v12/typescript folder.
• Request and response headers are now logged at INFO level, with sensitive data redacted.
• downloadToFile() is added to BlobClient.
• Exported HttpRequestBody type to allow implementation of a customized HTTP client.

For release notes and more information please visit https://aka.ms/azsdk/releases/july2019preview

• [Breaking] Updated convenience layer methods enum type parameters into typescript union types, this will help reducing bundle footprint.
• [Breaking] Updated URL encoding strategy for url parameters of new XXXURL(url, pipeline) methods, such as new BlobURL(url, pipeline).
  • URL will accept both encoded or non-encoded URL string. It will escape non-escaped special characters, like Chinese characters. However, if blob name includes ? or %, url must be encoded manually.
• [Breaking] SASQueryParameters is not going to be exported in browser bundle, and will be exported in Node.js runtime.
• [Breaking] IE11 needs Array.prototype.includes and Object.keys polyfills loaded.
• Updated dependency ms-rest-js to @azure/ms-rest-js.
• Fixed Aborter.timeout() misleading scale description.
• Added option maxSingleShotSize to customize concurrency upload threshold in bytes for highlevel uploading APIs, like uploadBrowserDataToBlockBlob or uploadFileToBlockBlob.
• Removed default 60s server timeout value for retry options tryTimeoutInMs to avoid large blob download stream unexcepted ending.
• Fixed an issue that when body is string with special characters, BlockBlobULR.upload will fail to upload.

• [Breaking] Updated names of exported interfaces IHTTPPipelineLogger & IHTTPClient to IHttpPipelineLogger & IHttpClient.
• [Breaking] For setMetadata() and setHTTPHeaders(), metadata and blobHTTPHeaders are moved from options into top level parameter list.
• Fixed bugs and typos in samples.
• Fixed a bug during generateAccountSASQueryParameters() that generated signature is not valid.
• Fixed a bug during generateBlobSASQueryParameters() that cache-control, content-type, content-disposition, content-encoding and content-language are not supported.
• Fixed a bug in SAS generation that start and expiry time format is not correct.
• Removed File from uploadBrowserDataToBlockBlob parameter type list, because File extends Blob which is already in the list.
• Fixed typos in IRange comments.
• Removed useless marker field from option of ServiceURL.listContainersSegment method.
• Fixed a bug that timeout parameter should use second as unit instead of millisecond.
• Added stream retry when BlobURL.download response stream unexcepted ends.

• Fixed sharedkey authentication error when blob names have spaces.
• Updated samples in readme and sample folder to fix undefined headers.
• Updated readme samples to make it runnable as copy/paste.
• More documentation around ACCOUNT_SAS and CORS in readme.md and contributing.md.
• Size of browser bundle is reduced from 229KB to 175KB (minified version). Thanks Brian Terlson & Rikki Gibson!
• Set sideEffects option to true in package.json, which helps webpack4 for tree shaking.
• Updated browser and module option in package.json, webpack will try to load ES6 module.
• Added prettier config file.
• Fixed typos and unused imports.
• [Breaking] Dropped built-in polyfills for String, and following polyfills need to be loaded external for IE11 now:
  • Promise
  • String.prototype.startsWith
  • String.prototype.endsWith
  • String.prototype.repeat
  • String.prototype.includes
• [Breaking] Aborter.None is renamed to Aborter.none for JavaScript naming conventions.

• Initial Release. API version 2018-03-28 supported. Please see the README for information on the new design.