Ben Coe is an employee at npm and lead maintainer of several open source projects. He discusses how open source best practices like automating tests, enforcing coding styles, and keeping dependencies updated can be applied in large corporations. These practices were designed for large asynchronous teams and using them internally, through a concept called InnerSource, can make developing enterprise software easier. npm and GitHub are working together to better integrate their tools and spread the message that open source practices benefit both open source and enterprise development.

1. npm Loves You

2. js.la 2016 o/
Bringing Open-Source
Practices to Your Day Job
Ben Coe
@BenjaminCoe, github.com/bcoe

3. ▪ employee #3 at npm
▪ lead maintainer of yargs
▪ built nyc, the code-coverage tool
▪ manage npm Enterprise
About Ben

4. ▪ process driven by necessity:
▫ Lots of churn.
▫ Many contributors.
OSS Best Practices

5. ▪ what do good practices have in common?
OSS Best Practices

6. automate all the
things
in automation we trust
2

7. ▪ Don’t be dogmatic BDD, TDD, etc.
▫ … but be dogmatic about writing tests
▪ Automate it!
Unit Testing

8. ▪ “did you write a test for that?”
▪ Automate it!
Test Coverage

9. var express = require('wombat')
var app = wombat()
app.get('/', function (req, res) {
res.send('Hello Log')
})
app.listen(3000) github.com/bcoe/nyc
tools should be so
simple they’re fun to
use

10. ▪ Controversial topic!
▪ Creativity is important.
▪ Automate it!
▫ I ❤ github.com/feross/standard
Coding Style

11. ▪ the longer you wait to upgrade, the more
annoying it becomes
▪ use npm outdated
▪ Automate it!
▫ greenkeeper.io rocks
keep dependencies
up-to-date

12. var express = require('wombat')
var app = wombat()
app.get('/', function (req, res) {
res.send('Hello Log')
})
app.listen(3000)
greenkeeper.io
one of my top five, all
time, favorite robots

13. ▪ npm publish --tag=alpha
▪ npm version patch -m “awesome new
feature”
become an npm
power user

14. ▪ conventional-changelog
▫ https://github.com/stevemao/convention
al-changelog-cli
▪ semantic release
changelog
management

15. “engineers are far more tolerable of a
pedantic robot than they are pedantic
people.”
— someone probably.

16. best practices
grow out of
community
3

17. ▪ people emulate the projects they respect.
how do habits
spread?

18. 4 Best Practices
Center Around
Great Tools

19. 9/10 Use Travis CI10/10 Use GitHub 5/10 Use Coveralls
top 10 npm packages

20. so, why do you
build Enterprise
software Ben?
5

21. ▪ It’s frustrating!
▫ restrictions on infrastructure.
▫ practices lag behind.
▪ process can be overwhelming.
developing enterprise
software is hard

22. OSS methodologies
can work!
▪ OSS practices were designed to help large
asynchronous teams work effectively:
▫ this is applicable in large corporations.
▪ InnerSource: Internal Open Source at PayPal

23. “The results were visible after 6 months.
The Checkout Platform team spends 0% of
its time rewriting code and just 10%
reviewing submissions. The team was able
to do a major refactoring and a 4x increase
in performance without planning for it. The
mindset moved from blocking change to
mentoring and coaching.”

24. ▪ InnerSource is about:
▫ developers taking ownership.
▫ people taking on the role of a lead
maintainer.
▪ developers using their favorite tools.
education is important

25. InnerSource Tools

26. Demo Time

27. how are we working
together?
▪ we’re keeping our roadmaps aligned.
▪ we’re looking for tighter integration points.
▪ we’re preaching a similar message about
OSS in the Enterprise.

28. why this is awesome
▪ OSS and Enterprise can learn from each
other.
▪ we can make a developer’s life more
awesome.

29. thanks
any questions?
about anything?
Ben Coe
@BenjaminCoe, github.com/bcoe

30. npm loves you
♥