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## Who to CC in issues
| subsystem | maintainers |
| --- | --- |
| `lib/buffer` | @trevnorris |
| `lib/child_process` | @cjihrig, @bnoordhuis |
| `lib/cluster` | @cjihrig, @bnoordhuis |
| `lib/{crypto,tls,https}` | @nodejs/crypto |
| `lib/domains` | @misterdjules |
| `lib/{_}http{*}` | @indutny, @bnoordhuis, @mscdex, @nodejs/http |
| `lib/net` | @indutny, @bnoordhuis, @nodejs/streams |
| `lib/{_}stream{s|*}` | @nodejs/streams |
| `lib/repl` | @fishrock123 |
| `lib/timers` | @fishrock123, @misterdjules |
| `lib/zlib` | @indutny, @bnoordhuis |
| `src/async-wrap.*` | @trevnorris |
| `src/node_crypto.*` | @nodejs/crypto |
| `test/*` | @nodejs/testing |
| `tools/eslint`, `.eslintrc` | @silverwind, @trott |
| upgrading v8 | @bnoordhuis, @targos, @ofrobots |
| upgrading npm | @thealphanerd, @fishrock123 |
When things need extra attention, are controversial, or `semver-major`: @nodejs/ctc
If you cannot find who to cc for a file, `git shortlog -n -s <file>` may help.
## Labels
### By Subsystem
We generally sort issues by a concept of "subsystem" so that we know what part(s) of the codebase it touches.
**Subsystems generally are**:
* `lib/*.js`
* `doc`, `build`, `tools`, `test`, `deps`, `lib / src` (special), and there may be others.
* `meta` for anything non-code (process) related
There may be more than one subsystem valid for any particular issue / PR.
### General
Please use these when possible / appropriate
* `confirmed-bug` - Bugs you have verified exist
* `discuss` - Things that need larger discussion
* `feature request` - Any issue that requests a new feature (usually not PRs)
* `good first contribution` - Issues suitable for newcomers to process
--
* `semver-{minor,major}`
* be conservative – that is, if a change has the remote *chance* of breaking something, go for semver-major
* when adding a semver label, add a comment explaining why you're adding it
* minor vs. patch: roughly: "does it add a new method / does it add a new section to the docs"
* major vs. everything else: run last versions tests against this version, if they pass, **probably** minor or patch
* A breaking change helper ([full source](https://gist.github.com/chrisdickinson/ba532fa0e4e243fb7b44)):
```
git checkout $(git show -s --pretty='%T' $(git show-ref -d $(git describe --abbrev=0) | tail -n1 | awk '{print $1}')) -- test; make -j8 test
```
### Other Labels
* Operating system labels
* `os x`, `windows`, `solaris`
* No linux, linux is the implied default
* Architecture labels
* `arm`, `mips`
* No x86{_64}, since that is the implied default
* `lts-agenda`, `lts-watch-v*`
* tag things that should be discussed to go into LTS or should go into a specific LTS branch
* (usually only semver-patch things)
* will come more naturally over time
## Updating Node.js from Upstream
* `git remote add upstream git://github.com/nodejs/node.git`
to update from nodejs/node:
* `git checkout master`
* `git remote update -p` OR `git fetch --all` (I prefer the former)
* `git merge --ff-only upstream/master` (or `REMOTENAME/BRANCH`)
## If `git am` fails
* if `git am` fails – use `git am --abort`
* this usually means the PR needs updated
* prefer to make the originating user update the code, since they have it fresh in mind
* first, reattempt with `git am -3` (3-way merge)`
* if `-3` still fails, and you need to get it merged:
* `git fetch upstream pull/N/head:pr-N && git checkout pr-N && git rebase master`
## best practices
* commit often, out to your github fork (origin), open a PR
* when making PRs make sure to spend time on the description:
* every moment you spend writing a good description quarters the amount of time it takes to understand your code.
* usually prefer to only squash at the *end* of your work, depends on the change
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