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Contributing to Miew

Thank you for choosing to contribute!

THE INSTRUCTION IS UNDER CONSTRUCTION and doesn't cover recent repository changes to monorepo. We apologize for any inconvenience and are going to update it soon.

There are many ways you can do this, and you do not even have to write code at all. You could report issues or write docs instead if you'd like. We would also be happy if you could provide a feedback: we are eager to learn your use cases, your experience with the viewer, your expectations. Please contact us at miew@epam.com or via GitHub Issues.

Introduction

We adhere to the Semantic Versioning scheme. The major version number changes when the external API changes. While there is no external API specified yet it stays at zero for now.

According to the Continuous Integration principles, all the development occurs inside the master branch, and we use the latest branch for tagging released versions only. We rarely use public feature branches as they go against CI/CD.

There is a live demo application and a set of examples available. Each branch or tag gets its own subdirectory on the server, e.g. master or v0.7.10.

Reporting Issues

Please do not report sensitive / security issues via public channels, try to contact maintainers privately first (e.g. at miew@epam.com).

We use GitHub Issues to keep track of tasks, enhancements, and bugs. For your convenience, there is an issue template available.

It is always good to know the version of the project where the issue appears. You may learn the exact version of the library in a comment at the first line of a compiled library code. The demo application displays the version on About panel of the main menu. The full version number consists of several parts, e.g. 0.7.10+20171225.164646.68e4556:

  • 0.7.10 is the last release version,
  • 20171225 is the date the build took place, e.g. Dec 25, 2017,
  • 164646 is the UTC time of the build,
  • 68e4556 is a hash of the commit used for the build,
  • -mod suffix is appended if the project directory contained unversioned or changed files during the build.

Building and Running

First, prepare your development environment. Ensure that you installed git and Node.js. You are also encouraged to use Yarn package manager to guarantee that package versions are consistent across all build machines. NPM scripts are used to perform development tasks.

# grab the project
git clone git@github.com:epam/miew.git
cd miew

# install necessary Node.js modules
yarn

# execute the full build pipeline
cd packages/miew
yarn run ci

# run the demo application
yarn run demo

Debugging

During the build process we generate source maps for the transpiled and minified demo application. You may use browser capabilities (e.g. DevTools built into Google Chrome web browser) or an IDE like WebStorm for debugging.

Sometimes you may need to switch the uglification off in webpack.config.babel.js to ensure better debugging experience.

It might be of help to know that the demo application exports miew global object accessible from the browser console.

Making Changes

Please make sure maintainers are expecting your changes and will consider merging them into master. If the changes do not fit the project roadmap, it might unfortunately happen that you have wasted your time.

Core developers do not normally use pull requests. If you have rights to push, then clone the main repository and just start working on master branch. Commit and push to the origin but make sure you do not ruin anything.

External contributors are welcome to fork, branch and create pull-requests. Fork the project on GitHub and clone your fork locally. Apply changes, run automated and manual tests to verify that everything works correctly.

# grab the forked project
git clone git@github.com:username/miew.git
cd miew
git remote add upstream https://github.com/epam/miew.git

# create a branch
git checkout -b hotfix/great-fix-whatever -t origin/master

# install necessary Node.js modules
yarn

# start development server, with in-memory builds and live reload
cd packages/miew
yarn start

Before you commit and push, please ensure that the build is not broken:

  • Run the full build pipeline using yarn run ci command, it includes code linting and unit tests.
  • Verify that the demo application is working as expected (yarn run demo).
  • Check that examples for the library are working (see build/examples/).
  • It is also a good idea to run the graphics regression tests (yarn run test:e2e, yarn run show:e2e). Unfortunately, some tests fail yet.

Commiting

The commit message should describe what changed and why. The first line should:

  • start from an uppercase verb in imperative mood,
  • do not end with a period,
  • be 50 characters or less.

E.g. "Add Contact Surface mode", "Change style of the terminal panel". The second line should be empty, and then details should follow if any.

If you do not change the code but only a documentation or supplementary files, consider adding a [skip ci] phrase at the end of commit message details. This will let Continuous Integration tools to ignore the changes and to not initiate an extra build.

Before creating a PR use git rebase (not git merge) to synchronize your work with the main repository. Ensure again that the build is not broken (see Making Changes section).

# update
git fetch upstream
git rebase upstream/master

# lint, test and build
npm run ci

# run automated and manual tests, etc.
...

Releasing a Version

Unfortunately, it is still a semi-manual process.

  1. Ensure that you have a clean repo. Check the build pipeline etc.

    git status
npm run ci
...

  2. Use npm to automatically increment version (patch, minor or major).

    npm version patch

  3. Manually update some files.

    • Increment product version in the sonar-project.properties file.

    • Update CHANGELOG.md file. Don't copy the git log blindly, summarize, reword and reorder. Use the following groups order:

      ## [0.0.1] - 2000-01-01
### Added
### Changed
### Deprecated
### Removed
### Fixed
### Security
### Internal

    • Update unreleased link in CHANGELOG.md file.

      [Unreleased]: https://github.com/epam/miew/compare/v0.0.1...HEAD

    • Replace the automatic commit and move the tag.

      git add sonar-project.properties CHANGELOG.md 
git commit --amend
git tag -fa v0.0.1 -m "0.0.1"

  4. Merge master into latest branch.

    git checkout latest
git merge --ff-only master
git checkout master

  5. Push updated branches and tags.

    git push origin master latest
git push --tags

  6. Update a release description at https://github.com/epam/miew/releases.

    • Press button Draft a new release.
    • Select the new version tag among existing and fill in a description text box with new release link and list of changes (see CHANGELOG.md)
    • Press Publish.

Upon commit Travis CI builds master, latest branches and v0.0.1 tag. The tag automatically initiates NPM publish process if the build is successful.