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Collaborator Guide
Table of Contents
Issues and Pull Requests
Full courtesey should always be shown in video.js projects.
Collaborators may manage issues they feel qualified to handle, being mindful of our guidelines.
Any issue and PR can be closed if they are not relevant, when in doubt leave it open for more discussion. Issues can always be re-opened if new information is made available.
If issues or PRs are very short and don't contain much information, ask for more by linking to the issue or PR template. There is also a response guide if you're unsure.
Accepting changes
Any code change in video.js should be happening through Pull Requests on GitHub. This includes core committers.
Before a PR is merged, it must be reviewed by at least two core committers, at least one if it comes from a core committer.
Feel free to @-mention a particular core committer if you know they are experts in the area that is being changed.
If you are unsure about the modification and cannot take responsibility for it, defer to another core committer.
Before merging the change, it should be left open for other core committers to comment on. At least 24 hours during a weekday, and the 48 hours on a weekend. Trivial changes or bug fixes that have been reviewed by multiple committers may be merged without delay.
For non-breaking changes, if there is no disagreeming between the collaborators, the PR may be landed assuming it was reviewed. If there is still disagreement, it may need to be escalated to the TSC.
Bug fixes require a test case that fails beforehand and succeeds after. All code changes should contain tests and pass on the CI.
Involving the TSC
A change or issue can be elevated to the TSC by assing the tsc-agent label. This should be done in the following scenarios:
- There will be a major impact on the codebase or project
- The change is inherently controversial
- No agreement was reached between collaborators participating in the discussion
The TSC will be the final arbiter when required.
Landing a PR
Landing a PR is fairly easy given that we can use the GitHub UI for it.
When using the big green button on GitHub, make sure the "squash and merge" is selected -- it should be the only allowed option. If a PR has two features in it and should be merged as two separate commits, either ask the contributor to break it up into two, or follow the manual steps.
The commit message should follow our conventional changelog conventions. They are based on the angularjs changelog conventions. The changelog is then generated from these commit messages on release.
The first line of the commit message -- the header and first text box on GitHub -- should be prefixed with a type and optional scope followed by a short description of the commit.
The type is required. Two common ones are fix and feat for bug fixes and new features. Scope is optional and can be anything.
The body should contain extra information, potentially copied from the original comment of the PR.
The footer should contain things like whether this is a breaking change or what issues were fixed by this PR.
Here's an example:
fix(html5): a regression with html5 tech
This is where you'd explain what the regression is.
Fixes #123
Landing a PR manually
Optional: ensure you're not in a weird rebase or merge state:
git am --abort
git rebase --abort
Checkout and update the master branch:
git checkout master
git remote update
git rebase upstream/master
Check out the PR:
git fetch upstream pull/{{PR Number}}/head:{{name of branch}}
git checkout -t {{name of branch}}
For example:
git fetch upstream pull/123/head:gkatsev-html5-fix git checkout -t gkatsev-html5-fix
Optional: If necessary, rebase against master. If you have multiple features in the PR, landing a PR manually with several changes
git rebase master
Fix up any issues that arise from the rebase, change back to the master branch and squash merge:
git checkout master
git merge --squash --no-commit gkatsev-html5-fix
The --no-commit tells git not to make a commit on your behalf. It does stage everything for you, so, you can instead it:
git diff --cached
Now get the author from the original commit:
git log -n 1 --pretty=short gkatsev-html5-fix
Which shows:
commit 433c58224f5be34480c8e067ca6c5406ba1c1e9c
Author: Gary Katsevman <git@gkatsev.com>
Update TOC
Now you can commit the change the change with the author, following our commit guidelines
git commit --author "Gary Katsevman <git@gkatsev.com>"
Now that it's committed, push to master
git push upstream master
Congratulate yourself for a job well done and the contributor for having his change landed in master.
Landing a PR manually with several changes
Follow the same steps as before but when you rebase against master, you want to do an interactive rebase and then squash the changes into just a few commits.
git rebase -i master
This will give you an output like the following:
pick b4dc15d Update CONTRIBUTING.md with latest info
pick 8592149 Add Dev certificate of origin
pick 259dee6 Add grunt and doctoc npm scripts
pick f12af12 Add conventional-changelog-videojs link
pick ae4613a Update node's CONTRIBUTING.md url
pick 433c582 Update TOC
# Rebase f599ef4..433c582 onto f599ef4 (6 command(s))
#
# Commands:
# p, pick = use commit
# r, reword = use commit, but edit the commit message
# e, edit = use commit, but stop for amending
# s, squash = use commit, but meld into previous commit
# f, fixup = like "squash", but discard this commit's log message
# x, exec = run command (the rest of the line) using shell
# d, drop = remove commit
#
# These lines can be re-ordered; they are executed from top to bottom.
#
# If you remove a line here THAT COMMIT WILL BE LOST.
#
# However, if you remove everything, the rebase will be aborted.
#
# Note that empty commits are commented out
Replace pick to fixup or edit depending on how you want the output to look. You can also re-order the commits, if necessary.
fixupwill squash the commit it's infront of up into the commit above it
editwill allow you to edit the commit message before continuing
edit b4dc15d Update CONTRIBUTING.md with latest info
fixup 8592149 Add Dev certificate of origin
fixup f12af12 Add conventional-changelog-videojs link
fixup ae4613a Update node's CONTRIBUTING.md url
fixup 433c582 Update TOC
edit 259dee6 Add grunt and doctoc npm scripts
When you get to the edit commits, git will give more information, but you'd want to run ammend the current commit while following our commit guidelines
git commit --amend
After going through and making the commits you want, you want to change back to master and then rebase the branch onto master so we get a clean history
git rebase gkatsev-html5-fix
This will put our two commits into master:
b4dc15d chore(contributing.md): Update CONTRIBUTING.md with latest info <Gary Katsevman>
259dee6 chore(package.json): Add grunt and doctoc npm scripts <Gary Katsevman>
9e20386 v5.12.6 <Gary Katsevman>
Now you're ready to push to master as in the normal instructions.
I just made a mistake
While git allows you to update the remote branch with a force push (git push -f). This is generally frowned upon since you're rewriting public history. However, if you just pushed the change and it's been less than 10 minutes since you've done with, you may force push to update the commit, assuming no one else has already pushed after you.
I accidentally pushed a broken commit or incorrect commit to master
Assuming no more than 10 minutes have passed, you may force-push to update or remove the commit. If someone else has already pushed to master or 10 minutes have passed, you should instead use the revert command (git revert) to revert the commit and then commit the proper change, or just fix it forward with a followup commit that fixes things.
I lost changes
Assuming that the changes were committed, even if you lost the commit in your current history does not mean that it is lost. In a lot of cases you can still recover it from the PR branch or if all else fails look at git's reflog.
I accidentally committed a broken change to master
This is a great time to discover that something is broken. Because it hasn't been pushed to GitHub yet, it's very easy to reset the change as if nothing has happened and try again.
To do so, just reset the branch against master.
git reset --hard upstream/master
video.js releases
Releasing video.js is partially automated through conrib.json scripts. To do a release, you need a couple of things: npm access, GitHub personal access token.
Releases in video.js are done on npm and bower and GitHub and eventually posted on the CDN. This is the instruction for the npm/bower/GitHub releases.
When we do a release, we release it as a next tag on npm first and then at least a week later, we promote this release to latest on npm.
Getting dependencies
Install contrib
You can install it globally
npm i -g contrib/contrib
npm access
To see who currently has access run this:
npm owner ls video.js
If you are a core committer, you can request access to npm from one of the current owners.
GitHub personal access token
This is used to make a GitHub release on videojs. You can get a token from the personal access tokens page.
After generating one, make sure to keep it safe because GitHub will not show the token for you again. A good place to save it is Lastpass Secure Notes.
Doing a release
To do a release, check out the master branch
git checkout master
Then run the contrib command to do the next release. Don't forget to provide your GitHub token so the GitHub release goes through.
VJS_GITHUB_USER=gkatsev VJS_GITHUB_TOKEN=my-personal-access-token contrib release next patch
This makes a patch release, you can also do a minor and a major release.
After it's done, verify that the GitHub release has the correct changelog output.
Doc credit
This collaborator guide was heavily inspired by node.js's guide