Using Yarn

[mischah]

• Update dependencies
• Add yarn lock file
• Use Yarn on Travis
  • Right now I have to install yarn via npm so we dont have a huge perfomance win comparing yarn install with npm install.
  • Plus I still have to call the npm scripts via npm because yarn run is broken in the current release.
  • But we have a reproducible installation thanks to the lock file provided by Yarn. :heart_eyes:
  • Plus Yarn can handle optional dependencies like fsevents :heart_eyes:

[coveralls]

Coverage remained the same at 100.0% when pulling 6964830e582d8c961889f7ffe757073c0439d771 on yarn into 67775831258fce007161efdce9efa8249f363809 on master.

[mischah]

@krnlde @revrng

No Problems with optional dependencies on Debian with installing from the lock file:

$ yarn install
yarn install v0.15.1
[1/4] Resolving packages...
[2/4] Fetching packages...
warning fsevents@1.0.14: The platform "linux" is incompatible with this module.
info "fsevents@1.0.14" is an optional dependency and failed compatibility check. Excluding it from installation.
[3/4] Linking dependencies...
[4/4] Building fresh packages...
success Saved lockfile.

See https://travis-ci.org/micromata/http-fake-backend/jobs/167455330#L183-L184 for the whole log.

[krnlde]

Great news!