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# Contributing to jsGanttImproved
We'd love for you to contribute to our source code and to make jsGanttImproved even better than it is
today! Here are the guidelines we'd like you to follow:
- [Issues and Bugs](#issue)
- [Feature Requests](#feature)
- [Submission Guidelines](#submit)
- [Coding Rules](#rules)
- [Commit Message Guidelines](#commit)
- [Further Info](#info)
## <a name="issue"></a> Found an Issue?
If you find a bug in the source code or a mistake in the documentation, you can help us by
submitting an issue to our [GitHub Repository][github]. Even better you can submit a Pull Request
with a fix.
**Please see the [Submission Guidelines](#submit) below.**
## <a name="feature"></a> Want a Feature?
You can request a new feature by submitting an issue to our [GitHub Repository][github]. If you
would like to implement a new feature then it can be crafted and submitted as a Pull Request.
## <a name="submit"></a> Submission Guidelines
### Submitting an Issue
Before you submit your issue search the archive, maybe your question was already answered.
If your issue appears to be a bug, and hasn't been reported, open a new issue. Help us to maximize
the effort we can spend fixing issues and adding new features, by not reporting duplicate issues.
Providing the following information will increase the chances of your issue being dealt with
quickly:
* **Overview of the Issue** - if an error is being thrown a non-minified stack trace helps
* **Motivation for or Use Case** - explain why this is a bug for you
* **Version(s)** - what is the version(s) being used?
* **Browsers and Operating System** - is this a problem with all browsers or only specific ones?
* **Reproduce the Error** - provide a live example (using [Plunker][plunker] or
[JSFiddle][jsfiddle]) or an unambiguous set of steps.
* **Related Issues** - has a similar issue been reported before?
* **Suggest a Fix** - if you can't fix the bug yourself, perhaps you can point to what might be
causing the problem (line of code or commit)
### Submitting a Pull Request
Before you submit your pull request consider the following guidelines:
* Search [GitHub](https://github.com/jsGanttImproved/jsgantt-improved/pulls) for an open or closed Pull Request
that relates to your submission. You don't want to duplicate effort.
* Make your changes in a new git branch:
```shell
git checkout -b my-fix-branch master
```
* Create your patch.
* Follow our [Coding Rules](#rules).
* Commit your changes using a descriptive commit message that follows our
[commit message conventions](#commit).
```shell
git commit -a
```
Note: the optional commit `-a` command line option will automatically "add" and "rm" edited files.
* Push your branch to GitHub:
```shell
git push origin my-fix-branch
```
In GitHub, send a pull request to `master`.
If we suggest changes, then:
* Make the required updates.
* Commit your changes to your branch (e.g. `my-fix-branch`).
* Push the changes to your GitHub repository (this will update your Pull Request).
If the PR gets too outdated we may ask you to rebase and force push to update the PR:
```shell
git rebase master -i
git push origin my-fix-branch -f
```
_WARNING: Squashing or reverting commits and force-pushing thereafter may remove GitHub comments
on code that were previously made by you or others in your commits. Avoid any form of rebasing
unless necessary._
That's it! Thank you for your contribution!
#### After your pull request is merged
After your pull request is merged, you can safely delete your branch and pull the changes
from the main (upstream) repository:
* Delete the remote branch on GitHub either through the GitHub web UI or your local shell as follows:
```shell
git push origin --delete my-fix-branch
```
* Check out the master branch:
```shell
git checkout master -f
```
* Delete the local branch:
```shell
git branch -D my-fix-branch
```
* Update your master with the latest upstream version:
```shell
git pull --ff upstream master
```
## <a name="rules"></a> Coding Rules
To ensure consistency throughout the source code, keep these rules in mind as you are working:
* With the exceptions listed below, we follow the rules contained in
[Google's JavaScript Style Guide][js-style-guide]:
* Wrap all code at **100 characters**.
## <a name="commit"></a> Git Commit Guidelines
We have very precise rules over how our git commit messages can be formatted. This leads to **more
readable messages** that are easy to follow when looking through the **project history**.
### Commit Message Format
Each commit message consists of a **subject**, a **body** and a **footer**:
```
<subject>
<BLANK LINE>
<body>
<BLANK LINE>
<footer>
```
The **subject** is mandatory.
Any line of the commit message cannot be longer 100 characters! This allows the message to be easier
to read on GitHub as well as in various git tools.
### Revert
If the commit reverts a previous commit, it should begin with `revert: `, followed by the header of the reverted commit.
In the body it should say: `This reverts commit <hash>.`, where the hash is the SHA of the commit being reverted.
### Subject
The subject contains succinct description of the change:
* use the imperative, present tense: "change" not "changed" nor "changes"
* don't capitalize first letter
* no dot (.) at the end
### Body
Just as in the **subject**, use the imperative, present tense: "change" not "changed" nor "changes".
The body should include the motivation for the change and contrast this with previous behavior.
### Footer
The footer should contain any information about **Breaking Changes** and is also the place to
[reference GitHub issues that this commit closes][closing-issues].
**Breaking Changes** should start with the word `BREAKING CHANGE:` with a space or two newlines.
The rest of the commit message is then used for this.
## <a name="info"></a> Further Information
You can find out more detailed information about contributing in the [Documentation][docs].
[github]: https://github.com/jsGanttImproved/jsgantt-improved
[js-style-guide]: https://google.github.io/styleguide/jsguide.html
[closing-issues]: https://help.github.com/articles/closing-issues-via-commit-messages/
[docs]: https://github.com/jsGanttImproved/jsgantt-improved/wiki/Documentation