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Contribution Guidelines

Note: If these contribution guidelines are not followed your issue or PR might be closed, so please read these instructions carefully.

Contribution types

Bug Reports

  • If you find a bug, please first report it using Github issues.
    • First check if there is not already an issue for it; duplicated issues will be closed.

Bug Fix

  • If you'd like to submit a fix for a bug, please read the How To for how to send a Pull Request.
  • Indicate on the open issue that you are working on fixing the bug and the issue will be assigned to you.
  • Write Fixes #xxxx in your PR text, where xxxx is the issue number (if there is one).
  • Include a test that isolates the bug and verifies that it was fixed.

New Features

  • If you'd like to add a feature to the library that doesn't already exist, feel free to describe the feature in a new GitHub issue.
    • You can also join us on Discord to discuss some initials thoughts.
  • If you'd like to implement the new feature, please wait for feedback from the project maintainers before spending too much time writing the code. In some cases, enhancements may not align well with the project objectives at the time.
  • Implement the code for the new feature and please read the How To.

Documentation & Miscellaneous

  • If you have suggestions for improvements to the documentation, tutorial or examples (or something else), we would love to hear about it.
  • As always first file a Github issue.
  • Implement the changes to the documentation, please read the How To.

How To Contribute

Requirements

For a contribution to be accepted:

  • Documentation should always be updated or added.*
  • Examples should always be updated or added.*
  • Tests should always be updated or added.*
  • Format the Dart code accordingly with flutter format.
  • Your code should pass the analyzer checks melos run analyze.
  • Your code should pass all tests melos run test.
  • Start your PR title with a conventional commit type (feat:, fix: etc).

*When applicable.

If the contribution doesn't meet these criteria, a maintainer will discuss it with you on the issue or PR. You can still continue to add more commits to the branch you have sent the Pull Request from and it will be automatically reflected in the PR.

Open an issue and fork the repository

Environment Setup

The Dart Tiled library uses Melos to manage the project and dependencies.

To install Melos, run the following command from your terminal:

flutter pub global activate melos

Next, at the root of your locally cloned repository bootstrap the projects dependencies:

melos bootstrap

The bootstrap command locally links all dependencies within the project without having to provide manual dependency_overrides. This allows all plugins, examples and tests to build from the local clone project. You should only need to run this command once.

You do not need to run flutter pub get once bootstrap has been completed.

Performing changes

  • Create a new local branch from main (e.g. git checkout -b my-new-feature)
  • Make your changes (try to split them up with one PR per feature/fix).
  • When committing your changes, make sure that each commit message is clear (e.g. git commit -m 'Take in an optional horizontal offset').
  • Push your new branch to your own fork into the same remote branch (e.g. git push origin my-username.my-new-feature, replace origin if you use another remote.)

Breaking changes

When doing breaking changes a deprecation tag should be added when possible and contain a message that conveys to the user what which version that the deprecated method/field will be removed in and what method they should use instead to perform the task. The version specified should be at least two versions after the current one, such that there will be at least one stable release where the users get to see the deprecation warning and in the version after that (or a later version) the deprecated entity should be removed.

Example (if the current version is v1.3.0):

@Deprecated('Will be removed in v1.5.0, use nonDeprecatedFeature() instead')
void deprecatedFeature() {}

Open a pull request

Go to the pull request page of tiled.dart and in the top of the page it will ask you if you want to open a pull request from your newly created branch.

The title of the pull request should start with a conventional commit type.

Examples of such types:

  • fix: - patches a bug and is not a new feature.
  • feat: - introduces a new feature.
  • docs: - updates or adds documentation or examples.
  • test: - updates or adds tests.
  • refactor: - refactors code but doesn't introduce any changes or additions to the public API.

If you introduce a breaking change the conventional commit type MUST end with an exclamation mark (e.g. feat!: Remove the position argument from PositionComponent).

Examples of PR titles:

  • feat: Hexagon support
  • fix: Avoid infinite loop when parsing tiles
  • docs: Add a hexagon tile example
  • docs: Improve the Mandarin README
  • test: Add infinity test for Layer
  • refactor: Optimize the structure of the parsing loop

Maintainers

These instructions are for the maintainers of tiled.dart.

Merging a pull request

When merging a pull request, make sure that the title of the merge commit has the correct conventional commit tag and a descriptive title. This is extra important since sometimes the title of the PR doesn't reflect what GitHub defaults to for the merge commit title (if the title has been changed during the life time of the PR for example).

All the default text should be removed from the commit message and the PR description and the instructions from the "Migration instruction" (if the PR is breaking) should be copied into the commit message.

Creating a release

There are a few things to think about when doing a release:

  • Search through the codebase for @Deprecated methods/fields and remove the ones that are marked for removal in the version that you are intending to release.
  • Create a PR containing the changes for removing the deprecated entities.
  • Run melos version -V <package1>:<version> -V <package2>:<version> for Melos to generate CHANGELOG.md files.
  • Go through the PRs with breaking changes and add migration documentation to the changelog. There should be migration docs on each PR, if they haven't been copied to the commit message.
  • Run melos publish to make sure that there aren't any problems with any of the packages and make sure that all the versions are correct.
  • Once you are satisfied with the result of the dry run, run melos publish --no-dry-run
  • Create a PR containing the updated changelog and pubspec.yaml files.