geekie / arc-extensions

Extensions for Arcanist

Arcanist extensions

This is a collection of Arcanist extensions we use at Geekie.

• Linters
  • ESLint
• Unit Tests
  • Jest

Installation

The most convenient approach is to add this repository as a submodule of your project so it can be shared by everyone who works on the code, and use the same version of the linters and engines.

$ git submodule add https://github.com/geekie/arc-extensions geekie-arc-extensions
$ git submodule update --init

In your .arcconfig, enable the extension:

{
  "load": ["geekie-arc-extensions"]
}

Linters

ESLint

Instead of reporting every error found like most linters do, this will already suggest the whole fixed (i.e. output of eslint --fix) as a single "autofix" error. Rules that can't be fixed are reported.

This is the best approach if you also use eslint-plugin-prettier, because fixing each rule separately will leave the code unformatted in the end.

Example .arclint configuration:

{
  "type": "eslint",
  "include": "(\\.jsx?)$"
}

Unit Tests

Jest

This engine will only run tests related to the changed files in the current diff, but also supports arc unit --everything to run all tests.

In .arcconfig:

{
  "unit.engine": "JestTestEngine"
}