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Fluid

The Fluid Framework is a library for building distributed, real-time collaborative web applications using JavaScript or TypeScript.

Getting started using the Fluid Framework

You may be here because you want to...

  • Learn more about the Fluid Framework
  • Build a Fluid object

Documentation and guides can be found at https://fluidframework.com/.

Hello World repo can be found at https://github.com/microsoft/FluidHelloWorld.

Core Examples repo can be found at https://github.com/microsoft/FluidExamples.

Have questions? Engage with other Fluid Framework users and developers in the Discussions section of our GitHub repo.

Using Fluid Framework libraries

When taking a dependency on a Fluid Framework library, we recommend using a ^ (caret) version range, such as ^1.3.4. While Fluid Framework libraries may use different ranges with interdependencies between other Fluid Framework libraries, library consumers should always prefer ^.

Code structure

The core code for both the Fluid client packages and the reference ordering service is contained within this repo.

The repo structure is somewhat unique because it contains several pnpm workspaces: some for individual packages and some for larger collections which we call "release groups". The workspaces are versioned separately from one another, but internally all packages in a workspaces are versioned together.

These workspaces do not align with package namespaces, and also don't always correspond to a single directory of this repo.

Here's the list of release group workspaces:

Here's a list of other sets of other packages (each package within these groups is versioned independently, forming its own release group):

  • "Common" Packages: miscellaneous packages in the ./common directory and published under the @fluidframework/ namespace. Most of these (but not all) have "common" in their package name. Packages which are used by multiple other groups of packages (such as built tools, linter configs and protocol definitions) live here.
  • "Tools" Packages: miscellaneous packages in the ./tools directory and published under a variety of namespaces. Logically about the same as "Common", but most of the names include "tools" instead of "common".
  • Auxiliary Microservice Packages (supporting Routerlicious)
    • ./server excluding routerlicious, gitrest and historian (Published in the @fluidframework/ namespace)
  • ./docs: The code and content for https://fluidframework.com.

Dependencies between packages in various layers of the system are enforced via a build step called layer-check. You can view the full list of packages and layers in PACKAGES.md.

  • Note: to update the contents of PACKAGES.md for local package changes, run pnpm layer-check --md ..

Setup and Building

Install the required tools:

Clone a copy of the repo and change to the repo root directory:

git clone https://github.com/microsoft/FluidFramework.git
cd FluidFramework

Enable NodeJs's corepack:

corepack enable

Run the following to build the client packages:

pnpm install
npm run build

You can use the experimental worker mode to get faster build time as well: npm run build:fast

See also: Contributing

Build in VSCode

To build Fluid Framework within VSCode, open the Fluid Framework repo folder as a work space and use Ctrl-Shift-B to activate the build task. It is the same as running npm run build on the command line.

NodeJs Installation

We recommend using nvm (for Windows or MacOS/Linux) or fnm to install Node.js. This ensures you stay at the correct version while allowing other uses of NodeJS to use the (possibly different) versions they need side-by-side.

Because of a transitive dependency on a native addon module, you'll also need to ensure that you have the prerequisites for node-gyp. Depending on your operating system, you'll have slightly different installation requirements (these are largely copied from node-gyp's documentation):

On Windows

The node installer should ask if you want to install "Tools for Native Modules." If you check the box for this nothing further should be needed. Otherwise, you can follow the steps listed here

On Unix

  1. Python v3.7, v3.8, v3.9, or v3.10
  2. make
  3. A C/C++ toolchain (like GCC)

On MacOS

If you've upgraded your Mac to Catalina or higher, you may need to follow these instructions.

  1. Python v3.7, v3.8, v3.9, or v3.10
  2. XCode Command Line Tools, which will install make, clang, and clang++
    • You can install these by running xcode-select --install from a command line.

Other Build Requirements

  • Building server/Routerlicious
    • Refer to that package's README for additional requirements.
    • Note that these requirements do not affect all workflows (e.g. the one noted above), but will affect workflows that include the packages under server (e.g. fluid-build --symlink:full).

On Windows

  • Ensure that you have enabled running Powershell scripts by setting your environment's Execution Policy.

Testing

You can run all of our tests from the root of the repo, or you can run a scoped set of tests by running the test command from the package you're interested in.

Note: Some of the tests depend on test collateral that lives in a submodule here: https://github.com/microsoft/FluidFrameworkTestData. You may choose to fetch that collateral into your local repository, which is required to run all the tests - otherwise some will be skipped.

First, ensure you have installed Git LFS. Then, from the repo root:

git lfs install
git submodule init
git submodule update

Run the tests

npm run test

Include code coverage

npm run test:coverage

Mimic the official CI build

Our CI pipelines run on Linux machines, and the npm scripts all have the ci prefix. To replicate the test steps from the CI pipeline locally, run the following commands for the packages or pnpm workspaces:

Run Non-Windows Windows
PR npm run ci:test npm run test:report && npm run test:copyresults
Official npm run ci:test:coverage npm run test:coverage && npm run test:copyresults

Run tests from within VS Code

We've checked in VS Code configuration enabling F5 from a spec.ts file to run those tests if you set the debug configuration to "Debug Current Test".

Run it locally

Single browser window, two panes

This will use an in-memory implementation of the Fluid server to sync between the two panes in the browser window.

  • Choose an example under /examples
  • Navigate to the example's directory, e.g. /examples/data-objects/clicker
  • npm run start
  • Browse to http://localhost:8080 to interact with two copies of the example side-by-side

Multiple browser instances on the same device

This will run the local Fluid server implementation we call "Tinylicious", so you can sync between multiple browser instances.

First, start Tinylicious by running these commands from /server/routerlicious/:

pnpm install

Then these commands from /server/routerlicious/packages/tinylicious:

pnpm run build
pnpm run start

Then:

  • Navigate to the example of your choice (same as above)
  • npm run start:tinylicious
  • Browse to http://localhost:8080, copy the full URL you're redirected to, and open in a second window to collaborate

Tools

Prettier

This repository uses prettier as its code formatter. Right now, this is implemented on a per-package basis, with a shared base configuration.

  • To run prettier on your code, run npm run format from the appropriate package or release group, or run npm run format:changed from the root of the repo to format only files changed since the main branch. If your change is for the next branch instead, you can run npm run format:changed:next.
  • To run prettier with fluid-build, you can specify "format" via the script argument: fluid-build -t format or npm run build:fast -- -t format

To ensure our formatting remains consistent, we run a formatting check as a part of each package's lint script.

VSCode Options

Our workspace configuration specifies prettier as the default formatter. Please do not change this.

It is not configured to do any formatting automatically, however. This is intentional, to ensure that each developer can work formatting into their workflow as they see fit. If you wish to configure your setup to format on save/paste/etc., please feel free to update your user preferences to do so.

Notable setting options:

  • format on save
  • format on paste

User editor formatting setting options

Git Configuration

Run the following command in each of your repositories to ignore formatting changes in git blame commands: git config --local blame.ignoreRevsFile .git-blame-ignore-revs

Developer notes

Root dependencies

The root package.json in the repo includes devDependencies on the mocha and jest testing tools. This is to enable easier test running and debugging using VSCode. However, this makes it possible for projects to have a 'phantom dependency' on these tools. That is, because mocha/jest is always available in the root, projects in the repo will be able to find mocha/jest even if they don't express a dependency on those packages in their package.json. We have lint rules in place to prevent phantom dependencies from being introduced but they're not foolproof.

Contributing

There are many ways to contribute to Fluid.

Detailed instructions for working in the repo can be found in the Wiki.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.

This project may contain Microsoft trademarks or logos for Microsoft projects, products, or services. Use of these trademarks or logos must follow Microsoft’s Trademark & Brand Guidelines. Use of Microsoft trademarks or logos in modified versions of this project must not cause confusion or imply Microsoft sponsorship.