Actano Javascript Style Guide

This package provides Actano's .eslintrc.json as an extensible shared config. It extends the popular config by Airbnb and changes a few rules to fit our taste.

Usage

Our default export contains all of our ESLint rules, including ECMAScript 6+. It requires eslint and eslint-plugin-import.

Install this package and all its peer dependencies. Unfortunately, they cannot be normal dependencies. Please consult the package.json for correct version information of the peer dependencies.

yarn add --dev eslint eslint-config-actano-base eslint-plugin-import

Create an .eslintrc.yml with this content:

extends: actano-base

You might need enable the mocha context and allow having no-unused-expression in your test files by configuring this in a separate .eslintrc.yml inside your test directory:

env:
    mocha: true
rules:
    no-unused-expressions: off

Deviations from Airbnb

We are adopting most of the rules from Airbnb. Please check out their styleguide to get the full picture.

We do have different opinions on these topics:

Semicolons

They are not needed and code looks better without them. eslint: semi

Function names

Allow function expressions without a name. eslint: func-names

Underscores in function names

We use leading underscores to express that a function is private. eslint: no-underscore-dangle

Constant conditions

When using generators, while (true) loops make sense. eslint: no-constant-condition

Iterators

We want to use generators. eslint: no-iterator

ForOfStatement

for .. of loops provide an easy way to iterate through iterators. eslint: no-restricted-syntax

Arrow functions

We want to not be forced how are writing our arrow function bodies. eslint: implicit-arrow-linebreak