1.
yarn.lock
@teppeis
#tng24
March 31, 2017

2.
Hello!
• Teppei SATO, @teppeis
• Cybozu, Inc. / kintone Corp.

3.
https://scotch.io/tutorials/yarn-package-manager-an-improvement-over-npm

4.
Yarn
• yarn.lock instead of npm-shrinkwrap.json
• fast, offline, cache
• secure?
• --flat, --module-folder
https://yarnpkg.com/

5.
https://www.berriart.com/blog/2016/10/npm-yarn-benchmark/

6.
https://gist.github.com/othiym23/c98bd4ef5d9fb3f496835bd481ef40ae

7.
Yarn
• npm@5 2017
• yarn npm@5
• yarn Node.js io.js
• Yak shaving
• private npm registry
•

8.
https://twitter.com/othiym23/status/819684484970778624

9.
npm@5 …

10.
yarn …

11.
yarn.lock

12.
yarn.lock
•
• yarn.lock

13.
•
yarn.lock/npm-shrinkwrap.json
npm install/yarn install
semver
• CI
yarn.lock/npm-shrinkwrap.json

14.
• /CI
•
• minor

15.
Yarn
https://yarnpkg.com/

16.
https://yarnpkg.com/blog/2016/11/24/lockfiles-for-all/

17.
deps << devDeps
• npm dependencies
devDependencies
• babel, webpack, eslint 509
• breaking changes
devDependencies

18.
devDeps
•
• OSS
•
•

19.
•
breaking change
install upgrade
•
• install

20.
•
•
•

21.
yarn.lock

22.
•
• yarn.lock
• devDeps
deps
• deps devDeps

23.
Do you `git commit yarn.lock` ?
https://yarnpkg.com/