amarzavery / azure-sdk-for-js

An isomorphic javascript sdk for Azure services

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Azure SDK for Javascript

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This project provides an isomorphic Javascript package with TypeScript definitions that makes it easy to consume and manage Microsoft Azure Services. It supports SDKs for:

  • ARM services (control plane) (packages with the naming convention of @azure/arm-<servicename>)
  • data plane of some Azure services (packages with the naming convention of @azure/<servicename>).


Documentation of the supported SDKs can be found here:


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This project is licensed under MIT.

  • "MIT" license is usually used for the client libraries generated using Autorest.TypeScript that are targeting ARM (V2 version of Azure REST API). The license can be found in "LICENSE.MIT.txt" file in this repository.


This project has adopted the Microsoft Open Source Code of Conduct.

For more information see the Code of Conduct FAQ or contact with any additional questions or comments.

If you would like to become an active contributor to this project please follow the instructions provided in Microsoft Azure Projects Contribution Guidelines.

Project orchestration

This project uses Rush to manage our many Azure SDK libraries within a single repository. It is highly recommended that you read the Rush Developer Tutorials to familiarize yourself with the tool.

While you can continue to contribute to the project using the standard npm workflow, adopting Rush will provide you many benefits:

  • Your local build results will match what occurs on our build server, since the build server uses Rush to build the SDK.
  • Rush will ensure that all libraries use the same versions of a given dependency, making it easier to reason about our dependency graph and reducing bundle size.
  • Rush uses PNPM to install all dependencies across the SDK. Together they solve problems involving phantom dependencies and NPM doppelgangers. The way PNPM lays out packages also ensures that you can never accidentally use a dependency you don't directly declare in your package.json.
  • Dependencies between different libraries within the Azure SDK will be locally linked by default. This means you can make a local change in a library your library depends on, and it will just work without needing to use awkward "file:" paths in your package.json.
  • When a change is made in a local dependency, Rush will detect that the dependency is dirty and will rebuild it if you attempt to build a project that consumes that dependency.
  • Rush runs project tasks in parallel, subject to the inter-project dependencies that it detects. It also performs incremental builds by default, not rebuilding anything unnecessary (unless you tell it to).

Setting up your environment

Want to get started hacking on the code? Super! Follow these instructions to get up and running.

First, make sure you have the prerequisites installed and available on your $PATH:

  • Git
  • Node 8.x or higher
  • Rush 5.7.3 or higher (install / update globally via npm install -g @microsoft/rush)

Next, get the code:

  1. Fork this repo
  2. Clone your fork locally (git clone<youruser>/azure-sdk-for-js.git)
  3. Open a terminal and move into your local copy (cd azure-sdk-for-js)
  4. Install and link all dependencies (rush update)

Making the switch

If you have previously worked in this repo using the npm workflow, the first time you switch to using Rush you should commit or stash any untracked files and then get back to a clean state by running rush reset-workspace before proceeding any further. This will get rid of any latent package-lock files, as well as your existing (incompatible) node_modules directories. You can then proceed down the path outlined below.

Warnings for VSCode users

Visual Studio Code has a feature which will automatically fetch and install @types packages for you, using the standard npm package manager. This will cause problems with your node_modules directory, since Rush uses PNPM which lays out this directory quite differently. It's highly recommended that you ensure "Typescript: Disable Automatic Type Acquisition" is checked in your VSCode Workspace Settings (or ensure typescript.disableAutomaticTypeAcquisition is present in your .vscode/settings.json file).

The current version of VSCode for Windows has a bug that may cause a "file locked" error when you run any Rush command that modifies your node_modules directory:

ERROR: Error: Error: EPERM: operation not permitted, mkdir 'C:\XXXXX\node_modules'
Often this is caused by a file lock from a process such as your text editor, command prompt, or "gulp serve"

This bug is fixed in the Insiders build of VSCode (1.34), and will be included in the next release. Until then, you can resolve this by running the "Typescript: Restart TS server" command from the Command Palette to release the lock on the files.

Warnings for Windows users

Git for Windows has a bug where repository files may be unintentionally removed by git clean -df when a directory is locally linked. Because Rush creates local links between packages, you may encounter this. It's highly recommended to use the rush reset-workspace command to get your working directory back to a clean state instead. If you prefer to run git clean -df manually, you must first run rush unlink so that the operation can be performed safely.

Inner loop developer workflow with Rush

Installing and managing dependencies

Run rush update to install the current set of package dependencies in all projects inside the repo.

To add a new dependency (assuming the dependency is published on the NPM registry), navigate to the project's directory and run rush add -p "<packagename>" --caret [--dev]. This will add the dependency at its latest version to the project's package.json, and then automatically run rush update to install the package into the project's node_modules directory. If you know the specific version of the package you want, you can instead run rush add -p "<packagename@^version>" - make sure to use the caret before the version number. Do not use npm install [--save | --save-dev].

To add a dependency on another library within the Azure SDK, you can follow the same procedure as above as long as the library is also published to the NPM registry. Additionally, as long as the local copy of that library satisfies the SemVer range you specify when you run rush add, that library will be locally linked rather than downloaded from the registry. If the library has not yet been published to the NPM registry, you can't use rush add. In this case, you must manually edit the package.json to add the dependency and then run rush update to locally link the library into the project's node_modules directory.

To update a dependency's version, use the same process as adding a new dependency - just specify the new version you want to use. If other libraries also use this dependency, you will likely see the rush update step fail because the versions are now inconsistent. See below to learn how to resolve dependency version conflicts.

To remove a dependency, you must edit the package.json to remove the dependency and then run rush update to remove it from the project's node_modules directory.

If you manually edit dependencies within the package.json for any reason, make sure to run rush update afterwards to update the project's node_modules directory.

Any time you add, update, or remove dependencies, running rush update will generate a diff to the file common/config/rush/pnpm-lock.yaml. You should commit these changes - this file works similarly to NPM's package-lock.json files, except it tracks package versions for all projects in the Rush workspace. Do not check in any package-lock.json files.

Resolving dependency version conflicts

When you run rush update, Rush will also ensure that dependency versions are consistent across all of our packages. If they are not, the command will fail and show you all packages which use a conflicting versions of dependencies. There are a few ways to resolve this:

First and foremost, you should make every attempt to match the versions of any dependencies your library has to those that already exist in the repository. Because we use approximate version range specifiers (e.g. "^8.0.0"), this is almost always what you want to do. There are only a few cases where this won't work.

If you know your library requires functionality introduced in a newer version of the dependency, you can update the version range specifier for your library and then run rush sync-versions to update all other projects that use that dependency. Keep in mind that for minor versions, this is usually safe, but major version bumps may introduce breaking changes and thus any other libraries that use that dependency should be tested thoroughly before merging. Make sure to run rush update manually after this action to update all affected projects' node_modules directories.

On the other hand, if you know your library does not work with the existing version of the dependency and you explicitly need an older version, you have a few options. The preferred option would be to update your library so that it works with the existing version of the dependency. If this is not feasible, Rush can be instructed to permit an exception to the "consistent versions" policy. Reach out to a member of the engineering system team to describe your situation and they will be able to help you add the exception.


Run rush build from anywhere in the repo to build any projects that have been modified since the last build. Run rush rebuild from anywhere in the repo to rebuild all projects from scratch.

Run rush build -t <packagename> to build a single project, and all local projects that it depends on. You can pass -t multiple times to build multiple projects. This works for rush rebuild as well. Keep in mind that Rush refers to packages by their full names, so packages will be named something like @azure/<servicename>.

By default, Rush only displays things written to STDERR. If you want to see the full output, pass --verbose to any of the build commands. This is also true for script commands (see below).

Other NPM scripts

Most package scripts are exposed as Rush commands. Use rush <scriptname> in place of npm run <scriptname> to run the package script in all projects. Navigate to a project's directory and substitute rushx for rush to run the script for just the current project. Run rush <scriptname> --help for more information about each script.

All projects have at least the following scripts:

  • audit: Run npm audit on the project (with some workarounds for Rush)
  • build: Build the project's production artifacts (Node and browser bundles)
  • build:test: Build the project's test artifacts only
  • check-format: Show Prettier formatting issues within the project
  • clean: Remove generated and temporary files
  • format: Reformat project files with Prettier
  • integration-test:browser: Execute browser integration tests
  • integration-test:node: Execute Node integration tests
  • integration-test: Execute all integration tests
  • lint:fix: Fix ESLint issues within the project
  • lint: Show ESLint issues within the project
  • pack: Run npm pack on the project
  • test:browser: Execute browser dev tests
  • test:node: Execute Node dev tests
  • test: Execute all dev tests
  • unit-test:browser: Execute browser unit tests
  • unit-test:node: Execute Node unit tests
  • unit-test: Execute all unit tests

Projects may optionally have the following scripts:

  • extract-api: Run API Extractor to show API issues and generate API reports

Getting back to a clean state

If you're having problems and want to restore your repo to a clean state without any packages installed, run rush uninstall. Downloaded packages will be deleted from the cache and all node_modules directories will be removed. Now you can start clean by re-downloading and installing dependencies from scratch with rush update. This will not make any changes to any other files in your working directory.

If you want to get back to a completely clean state, you can instead run rush reset-workspace. This will perform the same operations as above, but will additionally run git clean -dfx to remove all untracked files and directories in your working directory. This is a destructive operation - use it with caution!!

Rush for NPM users

Generally speaking, the following commands are roughly equivalent:

NPM command Rush command Rush command effect
npm install rush update Install dependencies for all projects in the Rush workspace
npm install --save[-dev] <package> rush add -p <package> [--dev] Add or update a dependency in the current project
npm build rush [re]build Build all projects in the Rush workspace
rush [re]build -t <package> Build named project and any projects it depends on
rushx build Build the current project only
npm test rush test Run dev tests in all projects in the Rush workspace
rush test -t <packagename> Run dev tests in named project and any projects it depends on
rushx test Run dev tests in the current project only
npm run <scriptname> rush <scriptname> Run named script in all projects in the Rush workspace
rush <scriptname> -t <packagename> Run named script in named project and any projects it depends on
rushx <scriptname> Run named script in the current project only
npx <command> node_modules/.bin/<command> Run named command provided by installed dependency package

Onboarding a new library

To add a new library to the repo, update rush.json in the root of the repo and add a new entry to the projects array at the bottom of the file. The package name must be the full name of the package as specified in its package.json. Your new library must follow our repository structure (specifically, it must be located at sdk/<servicename>/<packagename>) and your library's package.json must contain the required scripts as documented above. Once the library is added, run rush update to install and link dependencies. If your new library has introduced a dependency version conflict, this command will fail. See above to learn how to resolve dependency version conflicts.

Rush assumes that anything printed to STDERR is a warning. Your package scripts should avoid writing to STDERR unless emitting warnings or errors, since this will cause Rush to flag them as warnings during the execution of your build or script command. If your library uses a tool that can't be configured this way, you can still append 2>&1 to the command which will redirect all output to STDOUT. You won't see warnings show up, but Rush will still consider the command to have failed as long as it returns a nonzero exit code.

Issues with Rollup

Rollup must be manually configured to work correctly when symlinks are created in your node_modules (as Rush does). Each of your Rollup configuration objects must contain the following setting:

preserveSymlinks: false

Additionally, when adopting the Rush workflow you will likely see Rollup emitting many "not exported" errors like the following when generating your browser bundle:

equal is not exported by ..\..\..\common\temp\node_modules\\assert\1.4.1\node_modules\assert\assert.js
123:             assert.equal(foo, bar);

This is due to an open issue with one of Rollup's plugins (if you want the details, refer to this GitHub issue). To work around the issue, locate the Rollup configuration object for your browser bundle and modify the configuration for the nodeResolve plugin to match the following:

  mainFields: ['module', 'browser'],
  preferBuiltins: false

Contributing code to the project

You found something you'd like to change? Great! Please submit a pull request and we'll do our best to work with you to get your code included into the project.

  1. Commit your changes (git commit -am 'Add some feature')
  2. Push to the branch (git push origin my-new-feature)
  3. Create new Pull Request


Client Library Tested Operating Systems and Node Versions

Currently, the tests for client libraries in this repository are running against:

Linux (Ubuntu 16.04) MacOS 10.13 Windows Server 2016
Node 8 x x x
Node 10 x x x
Node 12 x x x
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An isomorphic javascript sdk for Azure services

License:MIT License


Language:TypeScript 99.2%Language:JavaScript 0.7%Language:HTML 0.0%Language:PowerShell 0.0%Language:CSS 0.0%