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Contributing

Filing Issues

Whether you find a bug, typo or an API call that could be clarified, please file an issue on our GitHub repository.

When filing an issue, please provide as much of the following information as possible in order to help others fix it:

  1. Goals
  2. Expected results
  3. Actual results
  4. Steps to reproduce
  5. Code sample that highlights the issue (full Flutter or Dart project that we can run ourselves are ideal)
  6. Version of Realm, Flutter and Dart
  7. Version of desktop OS - Mac, Windows or Linux
  8. Version of target mobile OS

If you'd like to send us sensitive sample code to help troubleshoot your issue, you can email help@realm.io directly.

Contributing Enhancements

We love contributions to Realm! If you'd like to contribute code, documentation, or any other improvements, please file a Pull Request on our GitHub repository. Make sure to accept our CLA.

CLA

Realm welcomes all contributions! The only requirement we have is that, like many other projects, we need to have a Contributor License Agreement (CLA) in place before we can accept any external code. Our own CLA is a modified version of the Apache Software Foundation’s CLA.

Please submit your CLA electronically using our Google form so we can accept your submissions. The GitHub username you file there will need to match that of your Pull Requests. If you have any questions or cannot file the CLA electronically, you can email help@realm.io.

Building from source

Note

If you want to enable switching between different Flutter and Dart versions in your local environment, see section Switching between versions of Flutter and Dart for instructions on how to install those SDKs.

Clone the repo

git clone https://github.com/realm/realm-dart
cd realm-dart
git submodule update --init --recursive

Install and activate melos

dart pub global activate melos

Make sure that ~/.pub-cache/bin/ is added to your PATH. Otherwise you need to prefix the following melos commands with dart pub global run.

# In e.g. `~/.zshrc`
export PATH="$PATH":"$HOME/.pub-cache/bin"

Set up the project

melos bootstrap
melos run setup

Build artifacts

melos run build

To only build the native code for a specific target (see available target names in build.dart), run:

cd packages/realm_dart
# Example using `macOSArm64` as target and debug mode.
dev build -m debug -t macOSArm64

Run all tests

melos run test

If having multiple Flutter/Dart versions installed, switch to the flutter master branch when running the tests.

In some cases, you may need to increase the number of possible file descriptors to use:

ulimit -n 2048

Tip

There are many more melos scripts available to customize what to build and test. See melos.yaml for details.

Running emulators/simulators

List all the available emulators/simulators:

flutter emulator

Launch one of the emulators, e.g.:

flutter emulators --launch apple_ios_simulator

Switching between versions of Flutter and Dart

Install Flutter and Dart

Create a directory called flutter somewhere on your machine (in this example we create it inside the directory ~/development):

cd ~/development
mkdir flutter
cd flutter

Clone the Flutter repo and name it master:

git clone git@github.com:flutter/flutter.git master
cd master

Create Git worktrees for a stable branch and beta branch:

git worktree add ../stable stable
git worktree add ../beta beta

Run the Flutter executable:

# In `master`
cd bin
./flutter

Define the current branch

Use a branch to represent the version of Dart you are currently working on by creating a symlink to point current to the stable branch:

ln -s stable current

Update the PATH environment variable (env)

Add the path to where bin is located in the current branch:

export PATH=$PATH:<path to flutter>/current/bin

# Example
export PATH=$PATH:$HOME/development/flutter/current/bin

Restart your terminal (or run source <path to profile file>) to load the new env.

Update VS Code settings

Note

Make sure you have our recommended VS Code extensions installed.

  1. Open the realm-dart root directory in VS Code and open any .dart file.
  2. Press Shift+Cmd+P to open the Command Palette.
  3. Type open settings.
  4. Select Preferences: Open Settings (UI).
  5. Type dart flutter sdk paths (using plural "paths" rather than "path").
  6. Under Dart: Flutter Sdk Paths, click Add Item.
  7. Enter the path to the flutter directory. Example: /Users/janedoe/development/flutter
  8. To confirm that it was added, open the Command Palette again, then type open settings and select Preferences: Open Settings (JSON). "dart.flutterSdkPaths" should be defined (remove any entry with the singular "dart.flutterSdkPath"). Example:
{
    // ...
    "dart.flutterSdkPaths": [
        "/Users/janedoe/development/flutter"
    ],
}

Switch versions

  1. Navigate to any .dart file.
  2. In the lower right corner in VS Code, click on the {} icon next to Dart and select which version to change (see screenshot):

VS Code switch Flutter and Dart version
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